If your property sits inside a local historic district, you almost always need written approval from the local preservation commission before you change anything visible on the outside of the building. If your property is only listed on the National Register of Historic Places, you don’t. That single distinction drives the rules for property owners under historic district designation, and confusing the two is the most expensive mistake owners make.
National Register listing is a federal honor. The regulations state plainly that listing private property on the National Register “does not prohibit under Federal law or regulation any actions which may otherwise be taken by the property owner with respect to the property.”1eCFR. 36 CFR Part 60 – National Register of Historic Places You can renovate, alter, or demolish a National Register property with your own money without asking anyone’s permission. What listing does is trigger a review when a federal agency funds or permits a project that could affect the property, and it makes the building eligible for federal tax credits and certain grants.
Local historic district designation is a municipal ordinance with regulatory teeth. When a city or county establishes a local district, owners inside the boundary need a Certificate of Appropriateness before replacing windows, changing siding, building an addition, or tearing anything down. The National Park Service has confirmed that National Register listing “does not automatically invoke local historic district zoning or local landmark designation.”2National Park Service. How to List a Property So a property can be in a National Register district with no local restrictions, in a local district with no National Register listing, or in both. Check with your local planning department to find out which applies to you before you plan any work.
What Work Needs Approval
Local commissions regulate exterior changes visible from the public right-of-way. Interior work is almost always exempt. So are rear elevations and other features hidden from public view in many jurisdictions, though this varies.
The scope of review typically covers roofing materials, siding, windows, doors, porches, fences, paint colors on masonry, additions, new construction on the lot, and demolition. Routine maintenance and in-kind repair using matching materials often qualify for staff-level approval without a full public hearing. The line between minor and major work is set by local ordinance, so read yours or ask before you assume.
Local design guidelines draw heavily from the Secretary of the Interior’s Standards for the Treatment of Historic Properties, which commissions across the country have adopted.3National Park Service. The Secretary of the Interior’s Standards for the Treatment of Historic Properties The governing philosophy is repair first, replace only when necessary, and when replacement is unavoidable, match the original in design, color, and texture.4eCFR. 36 CFR 67.7 – Standards for Rehabilitation Additions and new construction must be compatible with the historic building’s scale and character while also being clearly distinguishable as new work, so they don’t create a false impression of the property’s history.
Common modern materials often run into trouble. Vinyl replacement windows, aluminum siding, and synthetic trim are frequently prohibited or restricted because they look nothing like the wood, brick, and stone on most historic buildings. Repair with matching materials is usually straightforward and not particularly expensive. Wholesale substitutions for maintenance reasons, like re-siding a Victorian in vinyl, will generally be blocked.
Getting a Certificate of Appropriateness
Before starting regulated exterior work, you submit an application for a Certificate of Appropriateness to the local preservation commission or planning department. A complete application usually includes:
- A site plan showing the property and the location of the proposed work
- Architectural drawings or sketches showing what you intend to do
- Current photographs of the building
- Specifications or physical samples of new materials (for example, the profile of a replacement window or the type of roofing)
- A written narrative explaining how the work meets the district’s design guidelines
Thorough documentation up front is the single best way to avoid delays. Incomplete applications get sent back and pushed to the next review calendar. If you’re unsure what the commission expects, most planning departments offer pre-application meetings where staff walks you through the requirements before you spend money on detailed drawings.
Staff checks the application for completeness and schedules a public hearing. Notice is typically posted on the property or published in local newspapers so neighbors can review the plans. At the hearing, the commission evaluates whether the proposal meets the district’s standards and approves it, approves it with conditions such as a different material or color, or denies it. A written decision generally follows within 30 to 45 days of the hearing.
If you’re denied, you can usually revise the plans to address the commission’s concerns and resubmit. Most jurisdictions also provide a formal appeal to a board of adjustment, the governing body, or a court reviewing the decision on the record.
Minor Work and Staff-Level Approvals
Not every project needs a hearing. Many jurisdictions authorize commission staff to approve minor work administratively. Routine maintenance, in-kind repairs using matching materials, and small changes that clearly comply with design standards often qualify. This can shorten the timeline from weeks to days, so ask whether your project qualifies before assuming you need to sit through a hearing.
You Also Have to Maintain the Building
Many local historic ordinances include demolition-by-neglect provisions. The concern is that a building deteriorates until demolition is the only option, and the demolition sidesteps the preservation ordinance.5California Office of Historic Preservation. Establishing a Demolition by Neglect Ordinance Whether the neglect is intentional or the result of limited resources, the building is lost either way.
To prevent this, ordinances typically require owners to keep buildings weathertight and structurally sound. That means maintaining roofs, gutters, foundations, and exterior walls so water and structural failure don’t destroy the building from the inside out. Local enforcement officers can inspect and issue violation notices. Penalties vary by jurisdiction but can include daily fines that accumulate while the violation continues, liens on the property, and forced repairs billed to the owner.
What Happens If You Skip the Approval
Doing unauthorized exterior work is one of the most expensive mistakes possible in a historic district. Enforcement varies, but the consequences can be severe. Jurisdictions commonly impose monetary fines that range from modest daily penalties for minor violations to five- and six-figure fines for unauthorized demolition. Some require the owner to undo the work and restore the building to its prior condition at their own expense. Others impose moratoriums on new building permits for the site, freezing any development for years.
After-the-fact permit fees at multiples of the standard rate are another common tool. Even where the preservation commission cannot directly levy fines, the building department can charge inflated retroactive permit fees. The approval process takes weeks; fixing an enforcement action takes months or years and costs far more than the project would have originally.
Tax Credits and Other Financial Incentives
The Federal Rehabilitation Tax Credit
The biggest financial incentive for historic property owners is the federal rehabilitation tax credit under 26 U.S.C. ยง 47. The credit equals 20 percent of qualified rehabilitation expenditures on a certified historic structure, taken ratably over five tax years rather than all at once.6Office of the Law Revision Counsel. 26 USC 47 – Rehabilitation Credit On a $500,000 rehabilitation, that’s $100,000 in credits spread over five years.
To qualify, the building must be a certified historic structure, meaning it is individually listed on the National Register or is located in a registered historic district and certified by the Secretary of the Interior as contributing to that district’s significance.7eCFR. 36 CFR 67.2 – Definitions The building must also be depreciable, which effectively limits the credit to income-producing properties like rental housing, commercial buildings, and offices. Owner-occupied personal residences do not qualify.
The rehabilitation itself must be “substantial.” Your qualified expenditures during a 24-month period must exceed the greater of $5,000 or your adjusted basis in the building and its structural components.8Internal Revenue Service. Instructions for Form 3468 Phased projects following a written architectural plan get a 60-month window instead. The work must comply with the Secretary of the Interior’s Standards for Rehabilitation, and the National Park Service must certify both the building and the completed work.9Internal Revenue Service. Rehabilitation Credit (Historic Preservation) FAQs
State Credits, Abatements, and Easements
Many states offer their own historic rehabilitation tax credits that can stack on top of the federal credit. Programs vary widely in credit percentages, eligible property types, and whether they cover owner-occupied homes. Some states also offer property tax abatements or freezes that cap assessed values at pre-rehabilitation levels for a set number of years, preventing a tax spike after you’ve invested in restoring the building. The state historic preservation office is the place to check.
You can also donate a historic preservation easement to a qualified organization, restricting future exterior changes in perpetuity in exchange for a charitable deduction. The IRS scrutinizes these deductions closely. If your property is already subject to local historic district restrictions that prevent the same changes the easement would restrict, the easement may have little or no value, because you are giving up rights you did not effectively have.10Internal Revenue Service. Conservation Easements Get a qualified appraisal and experienced tax advice before going this route.
If Your Historic Building Serves the Public
Historic properties that operate as places of public accommodation are not exempt from the Americans with Disabilities Act. They must comply with ADA accessibility standards to the maximum extent feasible. The regulation recognizes that full compliance may sometimes threaten the building’s historic significance.11eCFR. 28 CFR 36.405 – Historic Preservation
When that conflict arises, alternative access methods are required rather than a blanket exemption. Alternatives typically include at least one accessible entrance, one accessible route to public spaces on the entry level, and accessible restrooms where restrooms are provided. If an owner believes even these minimum measures would threaten the building’s historic character, they must consult with the State Historic Preservation Officer to work out a case-by-case solution. Historic status shapes how you achieve accessibility. It doesn’t eliminate the obligation.
Ways Out: Hardship and Constitutional Challenge
Economic Hardship
Most local historic ordinances include an economic hardship provision as a safety valve. If complying with design standards or a denial of a demolition permit would make the property economically unviable, the owner can apply for relief. The legal threshold is typically pegged to the same level as a regulatory taking under the Fifth Amendment: the regulation must deprive the property of all reasonable economic use.
Proof takes substantial documentation. Commissions commonly ask for the purchase price and date, recent appraisals, assessed values, tax payment history, income and operating expenses for income-producing properties, evidence of efforts to sell or rent, and analysis of alternative uses. The burden of proof is on the owner, and the bar is high. Showing that a project would be more profitable without the restrictions is not enough. You generally need to show that the property cannot earn any reasonable return under the current rules.
Takings Challenges
Owners who believe a designation has gone too far can challenge it on constitutional grounds. The Fifth Amendment prohibits the government from taking private property for public use without just compensation, and a regulation that eliminates all economically beneficial use can be a taking even without physical seizure.
Courts evaluate these claims under Penn Central Transportation Co. v. New York City, weighing the economic impact of the regulation on the owner, the extent to which the regulation interferes with reasonable investment-backed expectations, and the character of the government action.12Justia Law. Penn Central Transportation Co. v. New York City, 438 US 104 (1978) No single factor decides the case. The Supreme Court has called it an “ad hoc, factual inquiry,” so outcomes depend heavily on the specific facts.
These challenges rarely succeed. The Supreme Court upheld New York City’s landmarks law in Penn Central itself, finding the designation did not prevent the owner from earning a reasonable return. Courts generally treat historic preservation as a legitimate exercise of land use authority, and as long as the property retains some economically viable use, the ordinance usually survives. The analysis changes if a designation effectively renders a property worthless or prevents any productive use. Before going down this road, weigh the cost and uncertainty of litigation against the economic hardship exemption, which is designed to provide relief without a lawsuit.