If your property is landmarked or located within one of NYC's historic districts, you may assume any work above the parapet automatically means a lengthy approval process. For many maintenance projects, that isn't the case. Understanding what LPC actually regulates can help you avoid unnecessary delays while still protecting the building's historic character.
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New York City has more than 38,000 landmarked properties across individual landmarks and historic districts throughout all five boroughs. If you're unsure whether your property is protected, the easiest starting point is the NYC Landmarks Preservation Commission's official map.
You can also contact 311 to confirm whether the property is individually designated or located within a historic district. A building may look like an ordinary apartment or commercial property while still being subject to historic-preservation requirements because of its location.
The most important point for owners is that ordinary repair and maintenance generally does not require LPC approval.
Recoating an existing roof to maintain or restore its existing appearance will often fall under routine maintenance. This is particularly relevant to flat-roof properties where much of the work is concealed behind a parapet.
If the finished surface cannot be seen from a public right-of-way and the project maintains the existing appearance, LPC review may not be necessary. That does not mean every project is automatically exempt. The property's designation, visibility, materials, color, and proposed changes can all affect the answer.
If proposed work changes a visible portion of the building in a way that can be seen from a public way, LPC review may apply. A significant change in appearance, profile, material, or color can move a project beyond ordinary maintenance.
New rooftop structures or additions are different from maintenance. Bulkheads, decks, mechanical screening, enclosures, enlargements, and other visible additions can affect the historic appearance of a property and may require LPC review.
Changing a visible surface to a substantially different material or color can also create an approval issue. Restoring an existing appearance is generally less complicated than introducing a new visual treatment.
Not Sure Which Applies to Your Project? Get a Free AssessmentA Certificate of No Effect (CNE) is generally associated with work that requires a city building permit but does not affect protected architectural features. It can provide a relatively straightforward path for qualifying projects.
A Permit for Minor Work (PMW) applies to certain work affecting protected features that does not require a separate Department of Buildings permit. These applications can generally be reviewed at the staff level without a full public hearing.
A Certificate of Appropriateness (CofA) is used for more substantial changes that can affect the character of an individual landmark or historic district. This is the more involved review route and may include public review and Commission consideration.
Not Sure Which Applies to Your Project? Get a Free AssessmentBe aware that while a Certificate of No Effect (CNE) or a Permit for Minor Work (PMW) can often be expedited by LPC staff within a few weeks if the work is below the parapet line, a Certificate of Appropriateness (CofA) is a far more extensive legal process. If your roof project alters a visible cornice, parapet wall, or requires highly visible safety railings that violate historic profiles, a CofA requires a full public hearing before the Commission, adding anywhere from 4 to 12 weeks to your pre-construction timeline.
Placeholder — LPC review paths: CNE, PMW, CofA
Landmarked properties are found throughout all five boroughs. The level of preservation review depends on the property's designation, location, and proposed exterior work.
The applicable requirements depend on the property's specific landmark status and the proposed scope of work.
For landmarked properties, we work with the building's board, owner, property manager, or architect to help keep the project documentation organized. We can provide information about existing conditions, proposed materials, preparation methods, and the planned scope so the responsible project team has the details needed for its review process.
We do not present ourselves as Landmarks Preservation Commission (LPC) specialists or provide preservation approvals. Instead, we coordinate with the professionals responsible for the property's landmark compliance and provide clear project information they can use when determining the appropriate next steps.
In many cases, no. If the work is ordinary maintenance, maintains the existing appearance, does not affect protected architectural features, and is not visibly changing the property from a public way, LPC approval may not be required. The specific property designation and project scope should still be confirmed before work begins.
Use the NYC Landmarks Preservation Commission's official map or contact 311. You can determine whether the property is individually designated or located within a historic district.
The appropriate review path depends on the scope. Some projects may qualify for a Certificate of No Effect or Permit for Minor Work, while more substantial visible alterations may require a Certificate of Appropriateness. An architect or landmarks-experienced expeditor can help determine which application applies.
No. Historic districts and individually designated properties exist in all five boroughs, including Jackson Heights and Douglaston in Queens, Fieldston in the Bronx, and designated properties in Staten Island.
We can provide photographs, existing-condition information, material details, and project specifications for your architect or expeditor to use when appropriate. For projects requiring formal LPC representation, particularly those involving a Certificate of Appropriateness, we recommend working with a professional experienced in landmark applications.
Not necessarily. Routine maintenance that does not alter protected or visibly significant features may have little or no additional preservation-related cost. Projects involving visible alterations, new materials, different colors, rooftop additions, or more involved LPC review can require additional planning, documentation, or professional services.
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Not sure whether your property's designation affects the work you have planned? We can assess the existing surface, document current conditions, and explain what falls within our construction scope.
Get a Free Assessment for Your Landmarked BuildingCall us to discuss your landmarked building's roof coating project.
This page is for general informational purposes only and does not constitute legal, architectural, preservation, or regulatory advice. Landmarks Preservation Commission requirements can vary based on the property's designation, location, visibility, existing materials, and proposed scope of work. Building owners should confirm project-specific requirements directly with the NYC Landmarks Preservation Commission or a licensed architect/expeditor experienced with landmark and historic-district applications.
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