How Long Does It Take to Get a Historic Preservation Permit?
Quick Answer
2–12 months depending on the scope. Minor exterior repairs may be approved in 2–4 weeks, while major renovations to landmark buildings often take 6–12 months of review.
Typical Duration
Quick Answer
A historic preservation permit typically takes 2–12 months to obtain. Minor exterior repairs like replacing damaged wood trim or repainting in approved colors can be reviewed in 2–6 weeks through a staff-level approval. Major renovations, additions, or alterations to nationally listed properties often require full commission review and can take 6–12 months or longer.
Types of Review and Their Timelines
| Review Type | Scope | Typical Timeline |
|---|---|---|
| Staff-level review | Minor repairs, in-kind replacements | 2–6 weeks |
| Administrative approval | Moderate work, pre-approved materials | 4–8 weeks |
| Full commission hearing | Major alterations, additions, demolition | 3–6 months |
| Section 106 review (federal) | Projects using federal funds or permits | 6–12 months |
| State Historic Preservation Office (SHPO) | Tax credit projects, state-listed properties | 4–8 months |
What Triggers the Need for a Permit
Historic preservation permits are required when a property is located in a local historic district, is an individually designated landmark, or is listed on the National Register of Historic Places and the project involves federal funding or licensing. Common triggers include:
- Exterior alterations visible from the public right-of-way
- Window or door replacement
- Roof material changes
- Additions or new construction on landmark parcels
- Demolition of any part of a designated structure
- Signage changes on commercial buildings in historic districts
Step-by-Step Process
- Pre-application consultation. Meet with the local historic preservation office to discuss your project. This step is free and can save months by identifying potential issues early.
- Submit the application with architectural drawings, material specifications, photographs of existing conditions, and a written description of the proposed work.
- Staff review. A preservation planner evaluates the application against the Secretary of the Interior's Standards for the Treatment of Historic Properties and any local design guidelines.
- Commission hearing (if required). For major projects, the local Historic Preservation Commission (HPC) or Landmarks Commission reviews the application at a public meeting. These boards typically meet monthly.
- Approval, approval with conditions, or denial. If approved with conditions, you may need to submit revised plans before receiving the final permit.
- Building permit. After receiving historic preservation approval, you still need a standard building permit for construction work.
Factors That Affect the Timeline
Scope of Work
In-kind repairs using the same materials and design are the fastest to approve. Introducing new materials (vinyl windows replacing wood, for example) triggers more scrutiny and often denial.
Federal Involvement
Projects that use federal funds, federal tax credits, or require federal permits trigger Section 106 review under the National Historic Preservation Act. This adds a separate layer of review through the State Historic Preservation Office and sometimes the Advisory Council on Historic Preservation.
Historic Tax Credits
If you are applying for federal or state historic tax credits, the review process is lengthened because the National Park Service must approve the rehabilitation plans. The NPS review alone takes 60–90 days for each of the three required submissions (Parts 1, 2, and 3).
Local Commission Schedules
Most Historic Preservation Commissions meet once per month. Missing a submission deadline means waiting another full month for review. Some cities have backlogs that push hearings out by 2–3 months.
How to Speed Up the Process
- Attend the pre-application meeting. This free consultation can prevent major redesigns later.
- Hire an architect experienced in historic preservation. They know the standards and can design compliant plans from the start.
- Use in-kind materials. Matching the original materials and design details dramatically simplifies approval.
- Submit complete applications. Incomplete submissions are the most common cause of delays.
- Know your commission's meeting schedule and submit well before the deadline.
Common Mistakes That Cause Delays
- Proposing vinyl or aluminum replacement windows on a landmarked building
- Beginning work before receiving the permit (stop-work orders add months)
- Submitting incomplete drawings without material specifications
- Ignoring the Secretary of the Interior's Standards
- Not accounting for Section 106 review on federally assisted projects
Bottom Line
For minor repairs, expect 2–6 weeks. For major renovations to designated landmarks, plan for 6–12 months of review time before construction can begin. Starting with a pre-application meeting and hiring experienced professionals are the best ways to keep your project on schedule.