A-Z definitions of NYC sidewalk repair terms, DOT codes, permits, materials, and construction concepts, explained by our licensed sidewalk contractors.
The owner of land that directly borders a public sidewalk. In New York City, this is the party legally responsible for m...
A continuous, unobstructed path that connects accessible public areas, buildings, and transportation systems, ensuring e...
Direct, real knowledge of a dangerous condition, such as a property owner who saw a broken sidewalk flag, received a com...
A concrete sidewalk built and maintained according to strict federal and municipal regulations to ensure safe, unobstruc...
A property owner whose land lies next to another parcel or a public way. In sidewalk law the phrase is used interchangea...
The New York City law requiring abutting property owners to install, repair, and maintain sidewalk flags, and authorizin...
A New York City law governing lawsuits against the City, best known for requiring prior written notice of a street or si...
The specific provision of NYC law stating that no one can sue the City over a defective street, sidewalk, or crosswalk u...
A New York City law giving the Comptroller the power to extend the time for starting a lawsuit against the City on certa...
The New York City law that makes the owner of property abutting (bordering) a public sidewalk legally responsible for ke...
Aggregate is the sand, gravel, crushed stone, or other mineral material mixed with cement and water to produce concrete....
Air-entrained concrete contains millions of tiny, intentionally formed air bubbles that improve its resistance to freeze...
Algae or moss growth is the accumulation of living organisms on damp concrete surfaces. The growth often creates a slipp...
Alligator cracking is a network of interconnected cracks that resembles the pattern of an alligator's skin. It commonly...
A comprehensive federal civil rights law enacted in 1990 that prohibits discrimination against individuals with disabili...
A below-grade open space adjacent to or beneath a building's foundation, often enclosed by a low fence or wall, providin...
An asphaltic concrete sidewalk is a pedestrian walkway constructed with asphalt instead of Portland cement concrete. Asp...
The process of replacing soil or gravel into the open trenches or gaps left along the edges of a newly completed sidewal...
A barricade is a temporary barrier used to block off a work area and keep pedestrians or vehicles out.
BBB accreditation is a membership status issued by the Better Business Bureau to participating businesses.
Belgian block consists of rectangular granite paving stones traditionally used for edging, streets, driveways, and decor...
A detailed street map of New York City marked with sidewalk and roadway defects, historically served on the City to esta...
An organization founded by the New York State Trial Lawyers Association that surveyed New York City streets and filed de...
A landscaped, engineered street-side channel designed to capture, filter, and naturally absorb stormwater runoff from su...
A birdbath is a shallow depression in concrete or asphalt that collects water after rainfall. The term describes the sha...
Bluestone is a dense natural sandstone widely used for sidewalks, entryways, steps, and patios. It is valued for its dur...
The highly specialized process of lifting, leveling, trimming, or replacing natural bluestone paving stones to maintain...
A bonded contractor is a contractor backed by a surety bond that provides financial protection if the contractor fails t...
One of New York City's five major administrative divisions — the Bronx, Brooklyn, Manhattan, Queens, and Staten Island —...
Borough-Block-Lot (BBL) is the three-part numeric identifier (borough, block, lot) used by NYC to uniquely locate any pr...
Brick pavers are individual clay or concrete paving units installed in repeating patterns to create walkways, patios, an...
A broken, loose, or cracked flag is a sidewalk slab that has fractured, shifted, or become unstable. The condition can r...
A texturing technique where a specialized stiff-bristled broom is dragged across freshly troweled concrete to create a s...
The legal boundary marking where a property's structure or lot meets the public sidewalk, forming one edge of the sidewa...
A wide, flat tool attached to a long, extendable handle that is pushed and pulled across freshly poured concrete to leve...
Calcium chloride is a chemical admixture sometimes used to speed the early setting and strength development of concrete....
A property that the LPC has formally placed on its active agenda to be considered for designation as a landmark or part...
DOT and DOB approvals required to erect a sidewalk shed, scaffold, or covered walkway over a public sidewalk during buil...
A curbside storm drain inlet containing a grated opening and an underground settling basin designed to capture rainwater...
A hinged metal panel set into the sidewalk that provides direct basement access from the street, common on older commerc...
A formal permit issued by the LPC for major sidewalk or property alterations that require a public hearing and full comm...
Documentation confirming that a previously cited sidewalk or construction defect has been properly fixed, sometimes requ...
A Certificate of Insurance (COI) is a document that proves an insurance policy is active and shows key coverage details.
An expedited permit issued by the LPC for proposed work on landmark properties that does not alter protected historic fe...
A change order is a written update to the original agreement that adds, removes, or changes work or pricing.
An individual who has completed a certified training course to legally prune and care for NYC's street trees on public p...
Sidewalk repair work NYC DOT performs, or contracts out, after a property owner fails to complete a cited repair within...
The minimum unobstructed strip of sidewalk that must remain open for pedestrian travel, generally at least five feet wid...
The minimum unobstructed horizontal space required along a sidewalk to allow a single wheelchair user to pass safely wit...
An older cast-iron sidewalk fixture, usually a small circular cover, once used to deliver coal directly into a building'...
Cold-weather concrete curing is the process of letting new concrete harden properly in low temperatures without being da...
“Commercial District Sidewalk” describes sidewalks located within commercial zoning districts, typically subject to heav...
A commercial zoning district is a city-designated zoning area where business, retail, or commercial uses are allowed or...
The appointed head of a New York City agency — such as DOT's Commissioner — who holds legal authority to order sidewalk...
One of 59 local advisory bodies across the five boroughs that reviews and comments on land use, construction, and street...
The process of vibrating or tamping down loose soil, gravel, or wet concrete to eliminate air voids and increase its den...
New York's rule that an injured person's compensation is reduced by their own percentage of fault, rather than barred en...
A metal or plastic trough attached to a concrete truck used to channel and slide wet concrete from the mixing drum direc...
Concrete cure time is the period concrete needs to harden and reach usable strength after placement.
An abrasive mechanical process that uses diamond-tipped blades to shave down raised concrete edges and eliminate small v...
Any process—such as mudjacking or polyurethane foam injection—used to raise and realign sunken, uneven concrete slabs.
A specialized commercial vehicle equipped with a rotating drum that continuously mixes cement, aggregate, and water duri...
The process of applying a thin, polymer-modified concrete overlay or coating over an existing concrete slab to restore i...
The application of a liquid chemical compound over a cured concrete surface to protect it from moisture infiltration, ch...
A concrete slump test measures the consistency and workability of freshly mixed concrete before placement. The test indi...
The initial step in finishing a pour, where a straight-edged tool is dragged across the top of the formwork to cut off e...
A specialized tool with a vibrating head that is immersed into wet concrete to eliminate air pockets, consolidate the mi...
The process where Consolidated Edison or its approved contractors repair sidewalk slabs disturbed during emergency utili...
A construction zone is the marked area where repair, demolition, or installation work is taking place.
Knowledge the law assumes a party had because a condition was visible and existed long enough that reasonable care would...
An independent, certified tree professional hired to evaluate tree health, assess root systems, and recommend preservati...
A control joint is a planned groove or weakened line created in concrete to encourage cracking along a predetermined loc...
A specialized drilling machine equipped with a hollow, cylindrical diamond-tipped bit used to extract physical concrete...
The extraction of a small cylindrical column of hardened concrete from a sidewalk to test its thickness and compressive...
The curved or angled section of sidewalk at a street corner where two sidewalks meet. NYC law makes the corner property...
A corner lot is a parcel that abuts two intersecting streets, forming a corner.
Corner radius is the curved edge where two curbs meet at a street intersection. Its size influences how vehicles turn wh...
The design approach used where a sidewalk meets an intersection, covering curb ramps, corner radius, and how pedestrian...
The repair work a property owner must complete to resolve a cited sidewalk defect and bring the property back into compl...
The copy of a Notice of Sidewalk Violation that DOT records with the borough County Clerk, where it remains on file unti...
A specialized repair technique where liquid epoxy or polyurethane resin is forced into concrete cracks to seal them agai...
Crazing is a network of very fine, shallow surface cracks that creates a pattern resembling a spider web. It usually aff...
The lateral gradient of a sidewalk flag, measured perpendicular to the direction of pedestrian travel, designed to shed...
The marked pedestrian crossing painted on the roadway connecting sidewalks on either side of an intersection, aligned wi...
Crushed stone and gravel are coarse aggregates commonly used in concrete mixes and beneath pavement as structural suppor...
A curb is the raised concrete or stone edge that separates the roadway from the sidewalk. It helps guide stormwater, def...
A curb cut is an opening or lowered section of curb that allows vehicles to enter a property or provides an accessible p...
The DOT approval required to lower a section of curb, creating or widening a driveway entrance across the sidewalk from...
Curb defacement is unauthorized marking, painting, engraving, or other alteration of a curb's appearance. It may include...
The boundary marking where the paved sidewalk ends and the roadway or gutter begins, forming the outer edge of the sidew...
A gently sloped transition structure cut into a sidewalk curb that allows individuals using wheelchairs, strollers, or m...
Curb replacement is the removal of a damaged curb and installation of a new one that meets current design requirements....
Curb resetting is the process of removing an existing curb and reinstalling it in the correct position instead of replac...
Curb reveal is the visible height of the curb above the roadway surface after construction. It helps control drainage wh...
The process of maintaining proper moisture and temperature conditions in freshly poured concrete to ensure it reaches it...
A curing compound is a liquid product applied to freshly placed concrete to reduce moisture loss during the curing proce...
The deliberate pattern of lines hand-grooved or cut into a concrete sidewalk to replicate historic stone flag layouts.
Delamination is the separation of one layer of concrete from another, creating a detached or hollow surface layer. The d...
The systematic breaking, crushing, and physical removal of damaged concrete sidewalk flags using jackhammers or heavy ma...
The invoice NYC's Department of Finance sends a property owner after DOT completes sidewalk repairs the owner didn't fin...
A tactile, dome-patterned ground surface tile embedded into concrete to alert visually impaired pedestrians that they ar...
A deteriorated curb is a curb that has cracked, chipped, settled, or otherwise degraded through age, weather, traffic, o...
The DOT site visit that verifies completed sidewalk repairs meet city specifications, resulting in a violation being mar...
A public sidewalk constructed with non-standard materials, unique colors, custom scoring, or integrated designs approved...
The identifying number DOB assigns to a business authorized to file building-related permits and applications in New Yor...
The NYC Department of Buildings' online system for filing, tracking, and managing building-related permit applications.
A sidewalk repair a property owner completes themselves (or through their own contractor) under a self-obtained permit,...
A DOT-approved or DOT-licensed contractor is a contractor authorized to perform work that requires NYC Department of Tra...
A contractor formally registered with NYC DOT's Bureau of Permit Management, authorized to apply for and hold sidewalk a...
A driveway apron is the paved section that connects a private driveway to the public street across the sidewalk or curb...
Driveway apron repair restores damaged sections of the driveway entrance where vehicles cross between the street and pri...
A drop curb is a section of curb that is lowered to create a smoother transition between the sidewalk and the roadway. I...
An edge break is damage occurring along the outer edge of a concrete slab where pieces chip, crack, or separate from the...
A specialized hand tool with a curved lip used to round off the outer edges of a freshly poured concrete slab to prevent...
Efflorescence is a white, powdery deposit left on concrete or masonry when water carries dissolved salts to the surface...
A DOT directive requiring immediate correction of a severely hazardous sidewalk condition, such as a collapsed or impass...
Any structure, object, or planting that extends into a sidewalk's required clear path without proper authorization, obst...
Erosion, or washout, is the removal of soil or base material by flowing water. Loss of support beneath pavement can lead...
The mechanical or manual digging and removal of soil, old pavement, or debris from a site to prepare the ground for cons...
A heavy, motorized construction machine equipped with a rotating cab and a powerful hydraulic arm and bucket used for di...
An expansion joint is a gap placed between sections of concrete to allow movement caused by temperature changes or struc...
A fall hazard is anything that can cause a worker or pedestrian to slip, trip, or fall.
Faulting is a vertical offset between adjacent concrete slabs caused by differential settlement or repeated loading. One...
Fiber-reinforced concrete contains small synthetic, glass, or steel fibers distributed throughout the mix to help contro...
Filter fabric is a permeable geotextile placed between soil and aggregate to separate materials while allowing water to...
The concluding DOT review confirming completed sidewalk or street work meets city specifications, after which the permit...
The individual concrete square that makes up a sidewalk, typically five feet by five feet in NYC, separated from neighbo...
The process of removing and replacing a single, full square section of a concrete sidewalk, commonly referred to as a "f...
The sloped transition zones located on the lateral sides of a curb ramp, designed to prevent pedestrians from tripping a...
A textured concrete finish achieved by using a wood or magnesium tool called a "float" to smooth out screed ridges and e...
The flow line is the lowest point along a gutter or roadway where stormwater naturally travels toward a catch basin or d...
Fly ash is a finely divided mineral material that can partially replace Portland cement in certain concrete mixes. It is...
The specific branch of the NYC Parks Department responsible for managing, planting, pruning, and protecting all municipa...
The process of stripping away the temporary wooden or metal forms after the poured concrete has cured and gained self-su...
A temporary framework of wooden boards or metal rails set up along the perimeter of a work area to contain and shape wet...
Wood or steel pins driven into the ground to secure and support sidewalk formwork boards, preventing them from bowing or...
A longer-term agreement authorizing a business to use public sidewalk or street space for a defined commercial purpose,...
A free estimate or site evaluation is an initial on-site review of the sidewalk work needed and the likely cost.
A freeze-thaw cycle is the repeated freezing and thawing of water inside concrete, soil, or small cracks.
Frost heave is the upward movement of pavement caused when moisture in the ground freezes, expands, and lifts the concre...
A comprehensive concrete repair method where the damaged slab is cut, excavated, and completely replaced down to the sub...
A specific yellow painted line or physical indicator on a sidewalk showing the path of buried natural gas service lines.
Registration that authorizes a business to legally file permits, coordinate trades, and take responsibility for a constr...
General liability insurance is business insurance that covers third-party bodily injury, property damage, and related cl...
A pre-lawsuit examination New York municipalities may demand after receiving a Notice of Claim, where the claimant testi...
Granite is a hard natural igneous stone known for its exceptional strength, durability, and resistance to weathering. It...
A hand tool featuring a V-shaped blade used to tool control joints directly into freshly poured concrete to prevent rand...
The paved channel running along the curb line that collects stormwater runoff from the street and sidewalk and directs i...
A hairline crack is a very narrow surface crack that typically forms as concrete cures or experiences minor movement. It...
A flat hand tool, typically made of magnesium, used by concrete finishers to smooth out ridges, level small imperfection...
Heaving is the upward movement of concrete caused by forces beneath the pavement. It can raise slabs above their origina...
The formal DOT regulations governing construction, excavation, and maintenance work on New York City streets and sidewal...
A legally protected geographic area in New York City recognized for its cohesive architectural, cultural, or historical...
A contract provision in which one party agrees not to hold the other responsible for certain losses or claims, shifting...
A public sidewalk built over a cavity, cellar, or subterranean vault instead of resting directly on solid, compacted soi...
A license issued by NYC's Department of Consumer and Worker Protection (DCWP), generally required for contractors perfor...
Honeycombing is a concrete defect characterized by visible voids and exposed aggregate caused by incomplete consolidatio...
A horizontal gap or separation is an opening between adjacent sidewalk slabs or pavement sections without a significant...
A citation for a driveway opening or curb break made without the required DOT permit, or one that doesn't meet city spec...
A sidewalk violation notice mistakenly mailed or filed against the wrong property owner, often due to outdated deed or t...
A contract provision requiring one party to reimburse another for losses, damages, or legal costs arising from specified...
A standalone building, structure, or site officially designated by the LPC for its exceptional historical, cultural, or...
An industrial property is land or buildings zoned or used for manufacturing, warehousing, or heavy commercial activities...
The practice of repairing or replacing sidewalk elements using new materials that perfectly replicate the original compo...
Rebuilding a sidewalk or historic feature using materials, colors, textures, and dimensions that match the original stru...
Any metal fixture embedded in a sidewalk's surface, including utility covers, vault lights, subway gratings, and cellar...
A heavy-duty pneumatic or electric tool used to break up old, cracked concrete sidewalk flags, curbs, or asphalt during...
Joint sealant or joint filler is a flexible material installed within pavement joints to reduce water infiltration and a...
The application of a flexible, waterproof sealant into sidewalk expansion joints to prevent water from seeping into the...
A flat, level concrete surface area located at the top or bottom of a ramp that allows wheelchair users to turn, rest, o...
The city agency that reviews and approves exterior changes to designated landmark buildings and properties within histor...
The formal evaluation process conducted by the LPC to ensure proposed sidewalk work in historic areas preserves the neig...
An optical or electronic instrument that projects a perfectly level laser line or references grades to assist in setting...
Lead-safe / lead paint certification is training or authorization related to working safely around lead-based paint or l...
The structural capacity measurement specifying the maximum weight that a structurally supported sidewalk or vault cover...
The 2003 New York City legislation that created Administrative Code § 7-210, transferring liability for most sidewalk in...
The lengthwise grade of a sidewalk, running parallel to the curb and generally following the natural grade of the street...
A pre-approved regulatory framework established for specific historic districts to standardize and speed up recurring re...
A heavy, removable iron plate that seals the entrance to an underground utility vault, sewer, or subterranean utility co...
The state authority operating New York City's subway, bus, and commuter rail systems, which owns infrastructure like sub...
A missing flag is a sidewalk slab that has been removed or is no longer present, leaving an exposed opening or unfinishe...
The precise recipe of cement, water, sand, gravel, and chemical additives used to create concrete with specific strength...
A mixed-use property combines residential and commercial spaces within the same building or parcel.
The dollar amount NYC's Department of Finance attaches to a property's tax record for sidewalk repairs the city performe...
Mortar is a mixture of cement, sand, and water used to bond masonry units such as bricks, blocks, and stone. Unlike conc...
A concrete leveling method where a pressurized mixture of water, soil, sand, and cement is pumped beneath a sunken slab...
A multi-family building is a property designed to house multiple separate dwelling units under one ownership, such as ap...
Municipal contractor licensing is the city or local licensing required to legally perform certain types of contractor wo...
MWBE certification means a business is certified as a Minority- and Women-owned Business Enterprise.
A widened section of sidewalk that extends into the roadway at an intersection or mid-block crossing, shortening the ped...
The statewide call-before-you-dig service that notifies utility companies of planned excavation so they can mark undergr...
A professional association of plaintiffs' attorneys across New York State, including many who handle sidewalk slip-and-f...
Next-day service means the contractor can start or respond the following business day.
Non-compliant patchwork is a pavement repair that does not meet applicable construction specifications or approved repai...
A legal obligation that stays with the responsible party even if the work is assigned to someone else. In NYC, a propert...
A formal written notice that must be filed, generally within 90 days of an incident, before suing the City of New York o...
DOT's order to remove illegal paint, markings, or advertisements from a sidewalk, curb, or roadway, distinct from a stru...
An official notice DOT sends a property owner when an inspection finds a defective sidewalk. It carries no fine on its o...
A report or inquiry filed with New York City's 311 system to flag a sidewalk hazard, request a repair permit, or check a...
The city's chief financial oversight office, which also processes Notices of Claim and certain challenges related to cit...
A claim filed with the New York City Comptroller, the office that receives Notices of Claim against the City, investigat...
The city agency that regulates building construction, licensing of tradespeople, and structures like canopies and scaffo...
The city agency, previously called the Department of Consumer Affairs, that licenses home improvement contractors and in...
The city agency that manages large-scale public infrastructure and capital construction projects, including certain stre...
The city agency responsible for water supply, sewers, and stormwater systems, including infrastructure that runs beneath...
The city agency responsible for billing and collecting on debts owed to the city, including the cost of sidewalk repairs...
The city agency responsible for street trees, tree pits, and the Trees and Sidewalks Program that addresses root-related...
The city agency responsible for maintaining streets and sidewalks, inspecting properties for sidewalk defects, and issui...
A free municipal program run by the NYC Parks Department that repairs severely damaged public sidewalks specifically imp...
A comprehensive digital map maintained by the NYC Parks Department that catalogs the location, species, size, and ecolog...
A summons heard before New York City's Office of Administrative Trials and Hearings (OATH), the tribunal — separate from...
The city's central administrative tribunal that hears and decides civil summonses issued by various agencies, including...
The DOT division that reviews construction permit applications and sets site-specific conditions to limit disruption to...
The exception in NYC sidewalk law under which owners of one-, two-, or three-family homes that are at least partly owner...
OSHA certification is proof of safety training based on Occupational Safety and Health Administration standards.
An owner-occupied residence is a dwelling where the property owner lives on-site as their primary residence.
A continuous, unobstructed path designated for pedestrian travel within the public right-of-way, designed to be fully ac...
A pedestrian detour is a temporary alternate route that directs people around a blocked sidewalk.
Pedestrian protection means the measures used to keep people safe near a sidewalk work site.
A financial guarantee, typically posted by a contractor, that ensures permitted sidewalk or street work will be complete...
A request to extend an active DOT permit's validity, or renew one that has expired, when a project runs longer than orig...
An LPC permit issued for minor maintenance, repair, or restoration work on landmark properties that do not require a Dep...
The site-specific conditions DOT attaches to a construction permit, covering things like allowed work hours, required si...
The registered contractor, business, or individual that DOT formally authorizes to perform work under an issued sidewalk...
Pigmented concrete is concrete colored by adding mineral-based pigments to the mix before placement. The color becomes p...
Pitting is the formation of numerous small holes or shallow depressions across a concrete surface. It develops gradually...
The DOT team that reviews sidewalk and street construction plans for compliance with city specifications before a permit...
The landscaped buffer between the curb and the sidewalk (or between a ribbon sidewalk and the roadway), typically holdin...
A heavy, motorized machine with a flat steel plate that vibrates rapidly to consolidate loose soil, sand, or gravel subg...
Ponding, or improper pitch, occurs when pavement is not sloped correctly, allowing water to collect instead of draining...
A pop-out is a small cone-shaped fragment of concrete that breaks away from the surface, leaving a shallow hole. It is o...
Portland cement concrete is a construction material made by combining Portland cement, water, sand, and coarse aggregate...
The deliberate slope and design of a sidewalk surface that guides rainwater entirely away from building foundations and...
A filing that revises a construction plan after it's already been approved, without requiring a brand-new application fr...
The physical act of depositing wet, mixed concrete directly from a transit mixer truck, buggy, or wheelbarrow into the p...
A motorized, vibrating screed machine used to level, consolidate, and smooth large volumes of wet concrete quickly and w...
A motorized machine equipped with rotating metal blades used to rapidly smooth, level, and dense-finish large, flat conc...
A formal evaluation of a tree's structural integrity, root footprint, and overall health conducted before any nearby exc...
The diagram DOT mails along with a Notice of Sidewalk Violation, showing which numbered sidewalk flags are defective and...
The area of law making property owners and occupiers responsible for injuries caused by unsafe conditions on or around t...
The use of highly pressurized water spray to remove dirt, grime, mold, salt residue, oil stains, and gum from concrete s...
Proactive, scheduled upkeep performed on concrete sidewalks to prevent minor surface issues from developing into costly...
Price per linear foot is a unit price based on the length of the work measured in linear feet.
Price per slab is a cost format that charges by each individual concrete section, or flag, being repaired or replaced.
Price per square foot is a unit price based on the area of the work measured in square feet.
A legal requirement that a municipality must have received written notice of a specific defect, such as a broken sidewal...
A project timeline is the planned schedule for each stage of a job from setup to completion.
The legal boundary separating one lot from an adjacent lot or from the public right-of-way, as recorded in city land rec...
PSI, or pounds per square inch, measures the compressive strength of concrete after it has cured. It indicates how much...
The NYC agency responsible for reviewing and approving the design of all permanent structures and distinctive paving on...
A punch list is a short list of remaining items that must be corrected before a job is considered finished.
Ready-mix concrete is concrete manufactured at a batching plant and delivered to a job site in a mixer truck. It is prod...
The legal benchmark for sidewalk maintenance in New York City: the sidewalk must be kept in a condition safe for ordinar...
Rebar, short for reinforcing bar, is steel reinforcement embedded within concrete to improve its ability to resist tensi...
A manual or hydraulic tool used to cut reinforcing steel bars to length and bend them into specific shapes to reinforce...
Recycled concrete aggregate (RCA) is crushed concrete recovered from demolished structures and processed for reuse in co...
The positioning of steel rebar or welded wire mesh within the sidewalk formwork before concrete is poured to increase te...
A DOT-issued approval allowing a private party to maintain a structure on, over, or under public sidewalk space — such a...
A narrower paved walking surface set back from the curb, separated by a planting strip rather than running directly alon...
The public strip of land encompassing the roadway, curb, and sidewalk, owned and controlled by the City of New York rega...
A rocking slab is a concrete slab that moves or rocks when weight is applied because it no longer has uniform support un...
An official on-site meeting between a property owner's contractor and an NYC Parks Department arborist to discuss safe,...
A subterranean plastic or fiberglass shield installed vertically alongside a sidewalk flag to redirect tree roots downwa...
A protective construction technique where a reinforced concrete slab or elevated ramp is built over tree roots to avoid...
The careful shaving or cutting back of invasive tree roots that have grown upward and lifted adjacent concrete sidewalk...
The complete extraction of invasive tree roots from beneath a sidewalk work zone to allow for a level subbase preparatio...
A periodic physical assessment of a property's paved walkway to identify cracks, uneven joints, drainage issues, or tree...
The longitudinal gradient of a sidewalk, measured parallel to the primary direction of pedestrian travel, indicating the...
The portion of rainfall or snowmelt that flows over impervious urban surfaces like sidewalks, roads, and driveways inste...
Salt de-icer damage is deterioration caused when de-icing salts or chemicals break down concrete, stone, or adjacent mat...
Sand is a fine aggregate used in concrete and mortar to fill spaces between larger aggregate particles. It contributes t...
The use of a specialized walk-behind or handheld power saw equipped with a diamond blade to cut precise, straight lines...
Scaling is the gradual loss of a thin surface layer of concrete through peeling or flaking. The damage usually affects t...
Scope of work is the written description of what a contractor will do on a project.
The grid of shallow grooves cut or tooled into fresh sidewalk concrete, typically marking the boundaries between individ...
A long, straight-edged board or metal rail used to strike off and level freshly poured concrete flush with the top edge...
The process of leveling and smoothing wet concrete immediately after it is poured by using a straight-edged board or mec...
Seasonal pour restrictions are limits on when concrete can be placed because weather conditions are too cold, hot, or we...
Settling, also called settlement, is the downward movement of concrete caused by compression or movement of the supporti...
A numerical grading system used by NYC Parks inspectors to rank the danger level of sidewalk damage caused by tree roots...
A shrinkage crack is a crack caused by the natural reduction in concrete volume as excess water evaporates during curing...
The paved public path for pedestrian travel, running between a property's building line and the curb line, that abutting...
The DOT authorization required to temporarily block pedestrian access to a sidewalk during construction, replacing the w...
A sidewalk closure is the temporary shutdown of a sidewalk segment so repair or construction work can be done safely.
The DOT permit required for any sidewalk repair, replacement, or new installation in NYC, whether the owner does the wor...
A recorded legal right allowing use of a defined portion of land for sidewalk purposes, such as a public walkway crossin...
The initial construction and pouring of a new concrete sidewalk where no paved walkway previously existed, or as part of...
A debt attached to a property's title after DOT hires a contractor to repair a sidewalk the owner failed to fix within t...
NYC's internal system tracking sidewalk conditions, inspections, and violation history for properties across the five bo...
The complete demolition, removal, and brand-new reconstruction of an entire sidewalk stretch or multiple continuous flag...
An underground architectural expansion of a building's basement or cellar that extends beneath the public sidewalk up to...
The official closing of a Notice of Sidewalk Violation after DOT confirms, through a re-inspection, that the cited repai...
A second DOT review of a cited sidewalk, requested when an owner disputes the original finding or wants to confirm repai...
A lookup of a property's sidewalk violation history — open, dismissed, or lien status — through NYC's public records or...
The paved distance from a property's building line to the curb, which varies by street type, zoning district, and neighb...
A compact, highly maneuverable engine-powered machine with lift arms that can be equipped with various attachments like...
Slate is a fine-grained natural stone that splits into thin, flat layers and is sometimes used for paving, steps, and ar...
A personal injury claim brought by someone who fell because of a dangerous surface condition, such as a raised sidewalk...
The numerical relationship of vertical rise to horizontal run, used to express the steepness of ramps, walkways, and cur...
Snow and ice removal responsibility is the duty to clear snow and ice from the sidewalk adjoining a property.
Spalling is the breaking, chipping, or flaking away of the concrete surface, exposing fresh concrete underneath. It is a...
A DOB license authorizing a person to hoist or lower loads up to 2,000 pounds on the exterior of a building, relevant to...
A New York rule imposing liability on a party that uses part of a public sidewalk for its own private benefit, such as a...
The targeted restoration of a single, highly localized defect on a concrete sidewalk without replacing the entire paved...
Rainwater or runoff that pools and remains stagnant on a sidewalk surface due to poor concrete grading, sunken pavement...
The legal deadline for filing a lawsuit. In New York, personal injury claims against private parties generally must be f...
A New York rule suspending a property owner's duty to clear snow or ice from sidewalks while a storm is still ongoing, a...
Water originating from rain, snowmelt, or ice melt that runs off roofs, driveways, sidewalks, and other paved, imperviou...
A long, rigid tool made of wood, aluminum, or magnesium used to check the flatness of a concrete surface and guide scree...
The curbside portion of a sidewalk reserved for fixed public amenities like benches, trash cans, bike racks, and signage...
The DOT permit authorizing excavation into a city street or sidewalk, typically for utility access, subsurface repairs,...
A city-owned tree planted within the public right-of-way, typically located in the sidewalk area or the grassy strip bet...
A structural crack is a crack that may affect the strength, stability, or load-carrying capacity of concrete rather than...
A highly engineered stone-and-soil mixture designed to support the heavy weight of concrete pavements while remaining po...
A subbase, also called a foundation course, is the compacted layer of granular material placed beneath concrete or aspha...
A subcontractor is a separate worker or company hired by the main contractor to perform part of the job.
The subgrade is the natural soil or prepared ground beneath the pavement structure. It forms the foundation that support...
Any sidewalk condition meeting the specific criteria in Administrative Code § 19-152 — such as a missing flag, a loose o...
The metal grille embedded in some sidewalks, typically near subway entrances, that ventilates heat and air from the subw...
A sunken flag or sunken slab is a section of concrete that has settled below the surrounding pavement. The lowered surfa...
A newer Notice of Sidewalk Violation that replaces an earlier one issued for the same property, becoming the operative n...
Surface dusting is the formation of a loose, powdery layer on hardened concrete caused by a weak or poorly bonded surfac...
A temporary cosmetic fix where a thin layer of mortar or concrete patch mix is spread over minor surface cracks or spall...
Tax Class 1 property is a classification for NYC real estate generally covering one- to three-family residential propert...
Tax Class 2 property is the NYC tax classification that typically covers larger residential buildings (multi-family) and...
A Tax lot is an individual parcel of land assigned a unique identifier within NYC property records used for taxation and...
Terrazzo is a composite material made from decorative stone chips embedded in a cement or resin binder and polished to c...
The chapter of the Rules of the City of New York that contains the official administrative and technical regulations enf...
A claim, right, or restriction attached to a property's title, such as a lien, easement, or covenant, that can limit the...
Traffic control is the management of vehicles and pedestrians around a work site.
The side-to-side pitch of a sidewalk, running from the building line toward the curb, required so water drains off the s...
A protective metal fence or barrier installed around a sidewalk tree pit to shield the tree trunk and soil from pedestri...
An unpaved cut-out opening in a concrete sidewalk designed to expose the soil around a street tree's base, allowing wate...
NYC's policy exempting owner-occupied one-, two-, or three-family properties from sidewalk violations and repair costs w...
A permit from NYC Parks required before performing construction or excavation within a set distance of a city-owned stre...
A specific type of narrow, deep excavation performed to install underground utilities, conduits, or drainage systems.
A trip hazard is any sidewalk condition that can cause a pedestrian to stumble or fall. Common examples include uneven s...
A defense in New York injury law holding that some sidewalk irregularities are too minor to be actionable, so a property...
A concrete finishing step where a flat metal hand tool is swept across the semi-dry surface to create a smooth, dense, a...
Turnaround time is the amount of time between the start of a request and completion of the work or response.
Undermining is the loss of soil or support beneath concrete that leaves portions of the slab unsupported. The pavement m...
Untinted concrete is standard concrete without added coloring pigments. Its natural appearance is typically light gray,...
A metal plate, grate, or hatch set into a sidewalk that provides access to utility infrastructure, such as gas, electric...
A trench, opening, or pavement removal made in a sidewalk by a utility company or contractor to access buried infrastruc...
A utility-cut restoration defect is a problem that develops after a utility excavation has been repaired, leaving the re...
The practice of spraying color-coded paint or placing flags on a sidewalk to indicate the exact location of buried utili...
A vacant lot is an undeveloped parcel of land that has no standing building or primary structure.
A protective metal cylinder and access cap embedded in the sidewalk that allows technicians to shut off underground wate...
A mandatory, revocable consent permit issued by the NYC Department of Transportation allowing a property owner to mainta...
The specialized repair and preservation of historic glass lenses set in cast-iron sidewalk frames, historically used to...
Historic glass lenses embedded in concrete or cast-iron panels that allow natural sunlight to filter down into a sidewal...
A vault recess for curb is a specially designed curb area located above or beside an underground sidewalk vault so the s...
The physical overhead structure, including concrete slabs, steel support beams, and waterproofing, that caps a sidewalk...
Vertical displacement is a difference in height between adjoining concrete slabs or sidewalk flags. The uneven elevation...
The process of challenging a Notice of Sidewalk Violation an owner believes was issued in error — for example, over the...
The unique identifying number DOT assigns to a specific sidewalk violation, used to track, search, and reference it thro...
The hand-marked diagram on a sidewalk violation notice showing exactly which flags are defective and what type of defect...
The status assigned after DOT's dismissal inspection confirms a sidewalk repair meets city standards, closing out the vi...
The status showing that DOT completed the sidewalk repair itself and the Department of Finance has billed the property o...
The status shown for a sidewalk violation that hasn't been resolved, meaning the defect is still uncorrected and the rep...
A void beneath a slab is an empty space between the concrete and the supporting soil or base material. The loss of conta...
The process of filling empty air pockets or washed-out cavities beneath a concrete slab to restore structural support an...
A heavy, wheeled machine equipped with a circular diamond-tipped blade used to cut clean, straight, and deep contraction...
A warning sign is a posted notice that alerts people to a hazard or restricted area.
Warping is the bending or distortion of a concrete slab caused by uneven moisture or temperature changes through its thi...
The water-cement ratio is the proportion of water compared with cement in a concrete mix. It strongly influences the con...
A major underground pipe that distributes municipal drinking water from the city's water system directly into local prop...
Welded wire mesh is a grid of steel wires welded together at regular intervals and used to reinforce concrete. It helps...
Manual or motorized transport vehicles used to haul small batches of wet concrete, soil, stone, and tools across a job s...
Workers' compensation insurance is coverage that pays for employee work-related injuries and illnesses.
A workmanship warranty is a contractor promise to fix defects caused by poor labor or installation.
A work order is an internal or formal document that authorizes a specific job to begin.
The marked and physically protected area surrounding active sidewalk or street construction, set up to separate pedestri...
A written estimate is a documented price proposal that lists the expected cost and basic terms of the job.
Talk to a licensed sidewalk contractor and get a free on-site inspection for your NYC property.