Historic Districts & Preservation Guide
Last updated:
Historic districts represent some of America's most desirable neighborhoods — and some of its most regulated. Understanding how historic preservation rules work is essential for anyone considering buying, renovating, or building in a historic area. This guide covers the regulatory framework, your obligations as a property owner, available financial incentives, and practical strategies for navigating the system.
Types of Historic Designation
Understanding the difference between federal, state, and local designation is critical:
National Register of Historic Places
- Administered by: National Park Service (NPS)
- Effect on private property: Minimal — honorary designation only
- When it matters: If federal funding, permits, or licenses are involved (triggers Section 106 review), or if you want to use the Federal Historic Tax Credit
- Over 96,000 listings including individual properties and districts
State Historic Registers
- Administered by: State Historic Preservation Offices (SHPOs)
- Effect: Varies by state — some states impose design review requirements
- Tax incentives: Many states offer historic tax credits for state-listed properties
Local Historic Districts (Most Impactful)
- Administered by: City or county historic preservation commission (HPC)
- Effect on private property: Enforceable design review requirements
- Key requirement: Certificate of Appropriateness (COA) for exterior changes
- This is the designation that most affects daily property ownership
| Designation Level | Design Review Required? | Tax Credits Available? | Demolition Restricted? |
|---|---|---|---|
| National Register only | No (except with federal involvement) | Federal (20%) | Only with federal involvement |
| State Register | Varies by state | State (varies) | Varies by state |
| Local Historic District | Yes | Local (varies) | Yes |
| Individual Landmark (local) | Yes (typically stricter) | Local + possible federal/state | Yes (strictest) |
The Design Review Process
How It Works
- You plan a project involving exterior changes to your property
- You submit a COA application to the local HPC with drawings, photos, and material specifications
- Staff review — Minor projects may be approved administratively (1-2 weeks)
- Commission review — Major projects go to the full commission (monthly meetings, 1-3 months)
- Decision — Approved, approved with conditions, or denied
- Building permit — Issued only after COA approval
What Typically Requires a COA
| Requires COA | Usually Exempt |
|---|---|
| Window replacement | Routine maintenance (matching materials) |
| Siding repair/replacement | Interior work (non-structural) |
| Roof replacement (different material) | Roof repair (matching material) |
| Additions | Painting (unless color is regulated) |
| New construction | Mechanical systems (if not visible) |
| Demolition | Landscaping (unless regulated) |
| Fencing | Emergency repairs |
| Exterior paint color changes | Storm windows (if matching) |
The Secretary of Interior's Standards for Rehabilitation
These 10 standards guide appropriate treatment of historic properties and are the basis for most local design review:
- Use the property for its historic purpose or a compatible new use
- Retain the historic character — don't destroy distinctive features
- Recognize the property as a physical record of its time
- Preserve character-defining features
- Preserve distinctive features rather than creating a false historical appearance
- Repair rather than replace deteriorated features; when replacement is necessary, match the original
- Avoid chemical or physical treatments that damage historic materials
- Protect archaeological resources
- Make new additions distinguishable from original but compatible
- New work should be reversible and not damage historic fabric
Financial Incentives
Federal Historic Tax Credit (20%)
- Eligibility: Certified historic structures (National Register-listed) used for income-producing purposes
- Credit amount: 20% of qualified rehabilitation expenditures
- Minimum expenditure: Must exceed the adjusted basis of the building (approximately depreciated value)
- Requirements: Must follow Secretary of Interior's Standards; NPS reviews and approves the work
- Not available for: Owner-occupied residential properties (check state credits instead)
State Historic Tax Credits
Over 35 states offer historic tax credits, many extending to owner-occupied residential:
| State | Credit Rate | Owner-Occupied? | Key Details |
|---|---|---|---|
| Virginia | 25% | Yes | Can combine with federal; transferable |
| Maryland | 20% | Yes | Both commercial and residential programs |
| Connecticut | 25% | Yes | Residential: up to $30,000 credit |
| Missouri | 25% | Yes | $250,000 annual cap per project |
| New York | 20% | Yes (in targeted areas) | Barn rehabilitation credit also available |
Check your state's current program — credits change frequently.
Local Incentives
Many jurisdictions offer additional benefits:
- Property tax freezes during rehabilitation (5-15 years)
- Property tax abatements for qualified rehabilitation
- Facade improvement grants (typically $5,000-$50,000)
- Reduced permit fees for historic properties
- Emergency stabilization grants for threatened structures
Common Issues and Costs
Windows (The Most Contentious Issue)
Historic windows are the most common point of conflict between owners and preservation commissions:
- HPCs generally require: Repair over replacement; if replacement is approved, new windows must match originals in material, profile, configuration, and operation
- What's often denied: Vinyl windows, aluminum windows, windows with different muntin patterns or proportions
- What's typically approved: Wood windows matching originals; some commissions now accept fiberglass or aluminum-clad wood
- Cost difference: Historic-appropriate wood windows cost $500-$1,500+ per window vs. $200-$400 for vinyl
Materials Cost Premium
Budget 10-30% more for historically appropriate materials:
| Element | Standard Cost | Historic-Appropriate Cost |
|---|---|---|
| Windows (per unit) | $200-$400 (vinyl) | $500-$1,500 (wood) |
| Siding (per sq ft) | $3-$6 (vinyl) | $6-$12 (wood clapboard) |
| Roofing (per sq ft) | $4-$8 (asphalt) | $15-$40 (slate/standing seam) |
| Paint | Standard | May require specific colors |
Timeline Impact
Add 1-3 months to your project timeline for:
- COA application preparation and review
- Possible revisions and resubmission
- Commission meeting schedules (typically monthly)
- Material sourcing for historically appropriate products
Practical Advice for Buyers
- Get the design guidelines before you buy — they'll tell you exactly what's expected
- Talk to the HPC staff informally before submitting applications — they can guide you
- Budget for higher-quality materials — it's not optional in a historic district
- Research tax credits early — they can offset the higher costs significantly
- Find contractors experienced with historic properties — inexperienced contractors waste time and money
- Document existing conditions with photographs before any work begins
- Check if the property is "contributing" or "non-contributing" — non-contributing properties have more flexibility
Use our Historic District Checklist for step-by-step due diligence before purchasing in a historic area.
Sources
- National Park Service — National Register of Historic Places·nps.gov·Accessed 2026-04-04·Direct link
- NPS — Federal Historic Tax Credit Program·nps.gov·Accessed 2026-04-04·Direct link
- Advisory Council on Historic Preservation — Section 106·achp.gov·Accessed 2026-04-04·Direct link
- Secretary of the Interior's Standards for Rehabilitation·nps.gov·Accessed 2026-04-04·Direct link
FAQ
Does being in a National Register Historic District restrict what I can do with my property?
Not directly. National Register listing is an honorary designation that does not impose restrictions on private property owners unless federal funding, licenses, or permits are involved (triggering Section 106 review). However, being in a National Register district makes the area eligible for local historic district designation, which DOES impose enforceable restrictions. Additionally, if you use the Federal Historic Tax Credit for rehabilitation, you must follow the Secretary of the Interior's Standards.
What is a Certificate of Appropriateness and when do I need one?
A Certificate of Appropriateness (COA) is a permit issued by a local historic preservation commission that approves proposed changes to a property in a locally designated historic district. You typically need a COA for any exterior alteration visible from a public right-of-way, including changes to siding, windows, doors, roofing, fencing, additions, demolition, and new construction. Routine maintenance using matching materials usually does not require a COA. Some districts also review interior structural changes.
How do historic district rules affect property values?
Research consistently shows that properties in historic districts appreciate at rates equal to or higher than comparable non-historic properties. A comprehensive study by the Advisory Council on Historic Preservation found that historic district designation typically stabilizes or increases property values. The restrictions that come with historic designation — maintaining character, preventing demolition, requiring quality materials — tend to preserve neighborhood quality and desirability, which supports property values.
Can I install solar panels on a historic property?
Yes, in most cases. While historic preservation commissions may review solar panel installations, outright denial is uncommon, especially with the growing emphasis on sustainability. Most commissions approve solar panels with conditions: placement on rear or less-visible roof slopes, flush mounting, and avoiding damage to historic roofing materials. Many states have solar access laws that limit the ability of any authority — including historic commissions — to prohibit solar installations.
What is the Federal Historic Tax Credit and who qualifies?
The Federal Historic Tax Credit provides a 20% income tax credit on qualified rehabilitation costs for certified historic structures used for income-producing purposes (rental, commercial, etc.). The property must be listed on the National Register (individually or as contributing to a district), the rehabilitation must follow the Secretary of the Interior's Standards, and qualified costs must exceed the adjusted basis of the building. Owner-occupied residential properties do not qualify for the federal credit, but may qualify for state tax credits.
Disclaimer: The information on this website is provided for general informational purposes only and does not constitute legal, financial, or professional advice. Always verify current requirements with your local planning department.