Certificate of Appropriateness (C of A) A formal permit issued by the LPC for major sidewalk or property alterations that require a public hearing and full commission approval.
A Certificate of Appropriateness is mandatory when proposed sidewalk repairs involve a distinct departure from the historic materials present, such as replacing original bluestone with custom-tinted concrete. Because these changes visibly modify the historic streetscape, the application must be presented before the local Community Board and the LPC Commissioners during a public hearing. Securing a C of A is a highly detailed process requiring material samples, architectural drawings, and a thorough review of structural impact. Resource: https://www.nyc.gov/site/lpc/applications/apply-for-a-permit.page
Frequently Asked Questions About Certificate of Appropriateness (C of A)
What is a Certificate of Appropriateness?
An LPC permit for major alterations to a landmark or historic district property, requiring a public hearing and full Commission approval.
When is a C of A needed for sidewalk work?
When the proposal departs from the historic materials, for example replacing original bluestone with tinted concrete.
What does the process involve?
Presentation to the Community Board and the Commission at a public hearing, supported by material samples, drawings and an assessment of the impact.
How long does it take?
Considerably longer than staff-level permits, because of the hearing calendar and documentation required, so it should be started early.
Where is the application information?
At https://www.nyc.gov/site/lpc/applications/apply-for-a-permit.page