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Certificate of No Effect (CNE)

Historic & Landmark Sidewalk Preservation
Carlos Mendez, Lead Concrete Specialist
Reviewed by Carlos Mendez Lead Concrete Specialist
Certificate of No Effect (CNE) An expedited permit issued by the LPC for proposed work on landmark properties that does not alter protected historic features.

A Certificate of No Effect is the most common permit utilized for standard sidewalk repairs that do not change the physical materials of the streetscape, such as replacing damaged concrete with matching, pre-approved tinted concrete. Because the proposed work has no negative impact on the historic fabric of the district, LPC staff can approve the application rapidly without requiring a public hearing. Once the CNE is issued, your contractor can obtain standard DOT physical work permits to start the project.

Matching materials means a faster approval

We scope repairs to qualify for staff-level review wherever the condition allows.

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Frequently Asked Questions About Certificate of No Effect (CNE)

What is a Certificate of No Effect?
An expedited LPC permit for work on a landmark property that does not alter protected historic features.
When is a CNE used for sidewalk work?
For repairs that do not change the streetscape materials, such as replacing damaged concrete with matching pre-approved tinted concrete.
Is a public hearing required?
No. Because there is no adverse impact on the historic fabric, LPC staff can approve it without a hearing.
What comes after the CNE?
The contractor still obtains the standard DOT permits before physical work begins.
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