How historic tax credits work.

Three credits, one application.

A historic tax credit is a dollar-for-dollar reduction in income tax, earned by rehabilitating a building that is listed on the National Register of Historic Places or eligible for listing, and doing the work to a set of federal standards. It is not a grant and not a deduction. If the building and the work qualify, a share of what you spend comes back as tax you no longer owe.

In New York there are three programs, and most projects use two of them at once. Which two depends on whether the building makes money.

• The federal credit20% of qualified rehabilitation costs, meaning the repair and renovation costs the program counts, on income-producing buildings: apartments, storefronts, offices, hotels, mixed use (a mix of shops, offices, or apartments in one building). Claimed over five years. Owner-occupied houses do not qualify.
• The New York State creditAn additional 20% of qualified costs, or 30% for smaller projects (costs of $2.5 million or less, placed in service, meaning finished and put to use, after January 1, 2022), on buildings in a qualifying census tract, meaning a neighborhood area on the state’s list. It rides on the federal credit: the project has to be approved for the federal credit first. Capped at $5 million per building.
• The New York homeowner creditFor owner-occupied historic houses: 20% of qualified costs, up to a $50,000 credit, with a $5,000 minimum spend. The house has to be listed (individually or in a listed district) and sit in a qualifying census tract or in a city under one million people with a poverty rate of 15% or more. The state reduced this credit in 2025, so check the current terms before counting on it.

A downtown block with apartments upstairs and a shop below would use the federal credit plus the state credit, so up to half of the qualified cost comes back. A family restoring the house they live in would use the homeowner credit alone. Energy incentives can be added on top of either for the right building.

The application, in order.

1. Is the building eligible?

   Listed on the National Register, or in a listed district, or eligible to be. If it is not listed yet, listing it is a step of its own and the firm has done it. For the state credits, the census tract has to qualify too; the state updates that list every April.

2. Part 1: the building

   Documents what the building is and why it is historic. For a building already on the Register, this part is short. For one that is only eligible, it is the case for listing.

3. Part 2: the work

   The rehabilitation described in detail, with the drawings, and reviewed against the Secretary of the Interior’s Standards, the federal rules for work on historic buildings. This is the part that decides whether the project qualifies, and it is where the design and the application are really the same document. The firm writes them together so the design is built to the standards from the first sketch instead of corrected to them later.

4. Construction

   The work goes ahead as approved. Changes along the way get run past the reviewers before they are built, because work that departs from the approved Part 2 can cost the credit.

5. Part 3: the finished building

   Photographs of the completed work and the final costs. The State Historic Preservation Office (the state office that handles these applications) reviews it, the National Park Service certifies it for the federal credit, and the certificate goes to your accountant for the tax filing.

6. The claim

   The federal credit is spread over five years from the year the building is placed in service. The state credits are claimed with the state return and can carry forward, meaning any unused part can be used in later years. Starting in 2026, the state credit on income-producing buildings can also be transferred once to another taxpayer, which matters for owners who cannot use the whole credit themselves.

What the standards mean in practice.

The Secretary of the Interior’s Standards are ten rules about respecting what is historic. In practice they come down to a few habits: repair before you replace; keep the features that give the building its character, inside and out; make additions that are clearly new but compatible; and do not fake history. A kitchen addition that looks like it belongs with the original house passes. Vinyl windows in a brick storefront usually do not. The firm knows where the lines are because it has been on both sides of the review, as the architect and as the owner.