Historic Rehabilitation Tax Credit: Eligibility and Certification

The federal historic rehabilitation tax credit equals 20% of your qualified rehabilitation costs on an income-producing certified historic building, claimed in equal amounts over five tax years starting when the building is placed in service. To get it, the project has to be certified by the National Park Service through a three-part application, the work must follow the Secretary of the Interior’s Standards for Rehabilitation, and your spending has to pass a substantial rehabilitation test tied to the building’s adjusted basis.¹

Which Buildings Qualify

Two conditions have to be true at the same time. First, the building must be a certified historic structure: individually listed in the National Register of Historic Places, or located in a registered historic district and certified by the Secretary of the Interior as contributing to that district.¹ Second, the property has to be depreciable, which in practice means income-producing: commercial, industrial, or rental residential use.

Owner-occupied homes are outside this program. You cannot depreciate a personal residence, so it fails the second test regardless of how historic it is. Some states run their own credits that reach owner-occupied properties, but the federal credit does not.¹

If your building isn’t already on the National Register, listing is its own process under 36 CFR Part 60, generally requiring at least 50 years of age, enough remaining original appearance to convey historic character, and a connection to significant events, people, or architecture.²

What Costs Count as Qualified Rehabilitation Expenditures

The 20% is calculated only on qualified rehabilitation expenditures (QREs). These are capital expenditures for the physical rehabilitation of the building and its structural components: structural repairs, plumbing and electrical upgrades, masonry restoration, window repair, and similar work.

Several things people expect to include are specifically excluded:

Acquisition costs. The purchase price of the building and land does not count.
Enlargement costs. Money spent expanding the building’s footprint does not count.
Short-term lessee work. A tenant’s remaining lease term (ignoring renewal options) has to be at least as long as the applicable depreciation recovery period.
Non-certified work. Rehabilitation costs only qualify if the overall project is certified as a “certified rehabilitation” by the National Park Service.³

Buying a building for $500,000 and spending $600,000 on rehabilitation does not produce a credit on $1.1 million. The credit runs on the $600,000, assuming all of that is genuinely QRE.

The Substantial Rehabilitation Test

The work has to be substantial. Your QREs during a 24-month measuring period you select must exceed the greater of the building’s adjusted basis (including structural components) or $5,000.⁴

Adjusted basis is roughly what you paid, minus the land value, plus prior capital improvements, minus depreciation already taken. For a building held for years with significant depreciation, the number can be low and the test easy to clear. For something you just bought, you may need to spend more on rehabilitation than you paid for the structure itself. You pick the 24-month window, and it has to end within the tax year you’re claiming for.

The Secretary of the Interior’s Standards

Every certified project has to follow ten standards codified at 36 CFR Part 67. The guiding idea is to keep what makes the building historic and not invent things that were never there. Distinctive materials and features stay. Changes the building has picked up over decades may themselves be significant and worth preserving. Repair beats replacement; when replacement is unavoidable, new material should match the original in design, color, and texture. Sandblasting and other harsh cleaning methods that damage masonry or wood are not permitted.

New additions have to read as clearly new rather than fake-historic, stay compatible with the building’s scale and character, and be designed so they could be removed later without harming the original structure. That last piece trips up otherwise strong applications: an addition permanently bonded to historic walls can sink certification.⁵

The Three-Part Certification Application

Certification runs through your State Historic Preservation Office and the National Park Service, and it happens in three parts.⁶

Part 1: Evaluation of Significance

Part 1 establishes the building as a certified historic structure. If it’s already individually listed, Part 1 is straightforward. If it sits inside a historic district, Part 1 asks for certification that the building contributes to the district.

Part 2: Description of Rehabilitation

Part 2 is the heavy lift. It requires a written narrative describing the existing condition and the proposed treatment for every area of work, plus pre-construction photographs of the exterior, interior, site, and surroundings, and drawings or sketches of planned alterations keyed to the narrative. Applications missing adequate photographs or drawings get placed on hold or denied.⁷

Part 3: Request for Certification of Completed Work

After construction, Part 3 documents what actually got built and requests final certification, with photographs of the completed work. Deviations from the approved Part 2 are where projects run into trouble at the end.

Review Timeline and Fees

The state office reviews first, then the National Park Service issues the federal determination. Each step typically runs about 30 days, so a complete, well-documented Part 1 or Part 2 generally takes around 60 days total. Incomplete submissions take longer.

NPS charges a processing fee on Parts 2 and 3, scaled to the total estimated rehabilitation cost:

$20,000 or less: $500
$20,001 to $100,000: $800
$100,001 to $200,000: $1,500
$200,001 to $500,000: $2,500
$500,001 to $1,000,000: $4,000
Over $1,000,000: $6,000

Half is due with Part 2 and half with Part 3. If actual costs come in lower than estimated, the Part 3 fee reflects the lower number, but the Part 2 payment isn’t refunded. If costs rise, the Part 3 fee is adjusted upward. A project that has to file a fresh Part 2 because of substantial design changes pays a new fee with no credit for the original.⁸

How You Actually Claim the Credit

The credit is 20% of QREs, but it doesn’t arrive in one piece. The statute spreads it ratably over five tax years beginning the year the rehabilitated building is placed in service, so you claim one-fifth each year.¹ On $1 million in QREs, that’s a $200,000 credit at $40,000 per year for five years.

Because it’s a credit rather than a deduction, each dollar reduces tax owed dollar-for-dollar. You claim it on IRS Form 3468 as part of the general business investment credit.⁹ Cash flow models built on receiving the whole credit up front will be off, and financing has to account for the staggered timing.

Recapture During the First Five Years

The credit comes with a five-year holding requirement. If you sell the property, convert it to a non-qualifying use, or otherwise remove it from service inside that window, part of the credit you already claimed gets added back to your tax:

Within the first year: 100% recaptured
Within the second year: 80%
Within the third year: 60%
Within the fourth year: 40%
Within the fifth year: 20%

After five full years from being placed in service, no recapture applies.¹⁰ Recapture applies to the total credit allowed in prior years and gets added to the tax bill for the year the disqualifying event happens. Ownership transfers and partnership restructurings are common triggers, so any planned sale or entity change inside the five-year window needs tax planning against the IRS safe harbors. Keep certification documents, the Part 3 approval, and expense records for at least three years past the end of the recapture period.

1
Office of the Law Revision Counsel. 26 USC 47 – Rehabilitation Credit
2
National Park Service. How to List a Property – National Register of Historic Places
3
Office of the Law Revision Counsel. 26 USC 47 – Rehabilitation Credit
4
Internal Revenue Service. Rehabilitation Credit
5
National Park Service. The Secretary of the Interior’s Standards for Rehabilitation
6
National Park Service. Historic Preservation Certification Application
7
National Park Service. Documentation Requirements for Certification Applications
8
National Park Service. Application Fees
9
Internal Revenue Service. Instructions for Form 3468
10
Office of the Law Revision Counsel. 26 USC 50 – Other Special Rules