--- title: "What to Expect from Nantucket's Historic District Commission: A Homeowner's Guide" url: "https://menardbuilding.com/resources/nantucket-historic-district-commission-builders-guide" date_modified: "2026-06-04T10:26:36-04:00" --- June 3, 2026 # What to Expect from Nantucket's Historic District Commission: A Homeowner's Guide The first time most owners hear the words "Historic District Commission" is when they call to ask how long their permit will take. By then, the HDC review is already on the critical path of the project, and the timeline often catches people by surprise. This is the most consistent misunderstanding we see at the front end of a build. ## How does the HDC affect my Nantucket project? If your project changes the exterior of a building anywhere inside Nantucket's Historic District (and most of the island is inside the district), you will need a Certificate of Appropriateness (COA) from the Historic District Commission before the Building Department will issue a permit. > For most projects, plan on about two months of HDC review. For complex or contested projects, add several weeks or more to this timeline. **The HDC** review is not a rubber stamp. It is a separate, public, weekly review process with its own checklist, its own meeting schedule, and its own revision cycle. This article explains: - What falls under HDC jurisdiction - What a Certificate of Appropriateness actually reviews - The realistic timeline, including revision rounds - What you can do before submission to keep the review moving - Common reasons projects stall A large area of Nantucket falls under the Historic District ## What areas of the island fall under HDC jurisdiction? The Nantucket Historic District covers nearly all of the island. The HDC's jurisdiction is exterior. New construction, additions, exterior alterations, fenestration changes, roof changes, siding, and many landscape elements all sit inside their review. Interior work does not. The rule of thumb is, if it can be seen from off your property, the HDC probably has a say about it. This includes new homes and accessory structures, demolitions and partial demolitions, additions, dormers, ells, and porches, exterior siding and roofing changes, windows, doors, and trim, driveways, fences, walls, and gates, signage, and in some areas, paint colors. **The HDC reviews appropriateness.** That means how a project sits in the visual fabric of the island, how it relates to neighboring structures, and how its size, shape, materials, and proportions read against the historic character of the district. It is not a building-code review. The Building Department handles that. ## What does a Certificate of Appropriateness review? A Certificate of Appropriateness (COA) is the document the HDC issues once it has approved the design of your exterior work. The Building Department will not issue a building permit without it. The COA review covers: - **Size and massing.** How big is the structure, how does it sit on the lot, and how does it compare to neighboring buildings. - **Shape and form.** Roof pitch, dormer placement, the silhouette of the building. - **Siting of the property.** Setbacks, orientation, and the relationship to the street and to adjacent structures. - **Materials.** What the building is wrapped and trimmed in, roofing and siding. - **Exterior architectural features.** Windows, doors, trim, porches, chimneys, the full kit of detail that defines island vernacular. A complete submission includes scaled drawings, materials specifications, neighborhood context photos, and any supporting documentation the project requires. The HDC's submission policies and checklists are publicly available, and they are detailed. ## What is a realistic timeline to get Historic District Commission approval on Nantucket? The HDC meets weekly. In theory, a project could be approved at its first meeting. In practice, very few are. A realistic timeline for HDC review: - Initial submission and staff review: 1 to 2 weeks - First hearing: typically 2 to 3 weeks after a complete submission - One round of revisions: 2 to 4 weeks - Second hearing and approval: another 2 to 4 weeks That is roughly two months, sometimes faster, sometimes longer. If the project is contested by abutters, if a major design change comes out of the first hearing, or if you submit during a busy meeting cycle, this timeline could extend weeks or months. For ground-up new construction, the HDC timeline runs in parallel with other approvals (Conservation Commission, Zoning Board of Appeals, septic). The total approvals window for a custom home is typically four to six months. The HDC is one of several gates, but it is often the slowest. ## Why most projects presented to the Historic District Commission need at least one revision. The HDC's job is to refine the design to fit the district. Even projects that arrive in good shape almost always come back with comments. Common revision triggers: - Window proportions or placement - Dormer scale relative to the roof - Trim profiles or exterior material substitutions - Massing where an addition overpowers the original structure - Site features that obscure or compete with the building A first-round design that lands without revisions is rare. The builders and architects who do this work the most are not avoiding revisions. They are designing in expectation of them, so the first set is close enough to land at the second hearing. ## What can I do before submitting plans to the Historic District Commission? The work that determines HDC outcomes happens before the submission, not at the meeting. There are several strategies to improve your submission which may help speed up the overall process. - **Hire an architect or designer who has done HDC work.** Their drawings will reflect the proportions, materials, and details the commission expects to see. Their proposals will already anticipate the comments. - **Walk the neighborhood.** The HDC reviews context. What is built nearby, at what scale, with what materials, with what relationship to the street, is the visual standard your project will be measured against. - **Choose materials with track records of success.** Materials the HDC has approved in the recent past on similar projects are easier to defend than materials no one has used yet. This does not mean the design has to be conservative. It means the choices need to be explainable. - **Build the HDC timeline into the project from day one.** A summer ground-break date depends on a winter HDC submission. Working backward from the start date is the only way the schedule lands. ## What are common reasons projects stall or are not approved? Most HDC stalls trace to one of three causes. - **Incomplete submissions.** A drawing set that does not show what the HDC needs to review goes to the next meeting. That is two weeks lost. - **Major design changes between hearings.** If the project that comes back to the second hearing is materially different from the one presented at the first, the clock effectively resets. - **Abutter opposition.** Projects with vocal opposition from neighbors can extend the review by months. The work is to communicate with abutters before the first hearing, not after. ## The Bottom Line When Getting HDC Approval The HDC is one of the most consistent timeline factors on any Nantucket project. The review is not arbitrary, and it is not personal. It is a public process with a published standard, and it runs on its own clock. The architects and [custom home builders on Nantucket](https://menardbuilding.com/about-us) who navigate it efficiently are the ones who design in expectation of the review, submit complete sets, and build in a 2+ month review window into the project schedule from the first conversation. If you are planning a [new custom home on Nantucket](https://menardbuilding.com/services/custom-homes), a [major renovation](https://menardbuilding.com/services/general-contracting), or [developing property on Nantucket](https://menardbuilding.com/services/development), [start the conversation with a site visit](https://menardbuilding.com/contact). The earlier we are involved, the more leverage you have over the HDC timeline. ## Frequently Asked Questions ### Do I need HDC approval for interior renovations? No. Natucket's Historic District Commission reviews exterior work only. Interior changes do not require a Certificate of Appropriateness. ### Can I appeal an Historic District Commission denial? Yes. Denials can be appealed to the Massachusetts Superior Court. In practice, most projects refine the design and come back to the HDC rather than litigate. ### What happens if I do exterior work without a Certificate of Appropriateness? The Building Department will not issue a permit, and any work done without a permit is at the homeowner's risk. The HDC can also require remediation of unpermitted exterior changes. ### Does paint color require Historic District Commission review? In some areas of the Historic District, yes. Check the current submission policies for your address. ## Ready to get started? Get in touch today. Have a question or want to work together? Send us a message and we'll get back to you within 24 hours. **EMAIL** **PHONE** [508-364-1589](tel:+15083641589)