HDC Sign Application Help

If you're opening a business on Nantucket or putting up any exterior signage in the Historic District, you'll need to go through the Historic District Commission before the sign goes up. That's not optional — it's the law, and the HDC takes it seriously. But the process is navigable, and if you come prepared, it doesn't have to be a source of stress.

This is a practical overview of what to expect and how to avoid the most common mistakes.

What the HDC Is and Why It Matters

The Nantucket Historic District Commission is the local body responsible for reviewing changes to the exterior appearance of buildings and properties within Nantucket's Historic District — which covers essentially the entire town center and most of the island's developed areas. The HDC reviews everything from paint colors and shutters to fences, porches, and signs.

Signs are one of the most regulated categories because they have an outsized effect on the visual character of a streetscape. A sign that's the wrong size, the wrong material, or in the wrong location doesn't just affect one business — it affects the look of an entire block. The HDC's job is to make sure that doesn't happen, and the commission takes that mandate seriously.

What Requires an HDC Sign Permit

Any new sign on a building within the Historic District requires HDC approval before installation. This includes business identification signs (hung, projecting, window-mounted, or freestanding), directional signs on private commercial property, menu boards and display cases visible from the street, and changes to existing approved signs — including repaints that alter the color or design.

Temporary signs have their own rules and are generally more restricted than you might expect. The “it's just temporary” argument doesn't tend to carry much weight with the commission. What doesn't always require HDC approval: purely interior signs not visible from outside, and identical replacements for previously approved signs using the same size, location, and design. When in doubt, ask HDC staff before you proceed — they're accessible and would rather answer a question than deny an application after the fact.

The Application Process

The core of an HDC sign application is a clear, scaled drawing of the proposed sign showing its dimensions, materials, colors, and mounting location on the building. The commission needs to be able to understand exactly what you're proposing — vague applications get continued or denied, not approved.

A well-prepared application typically includes a photograph or site plan showing where the sign will be mounted, a scaled drawing of the sign face with exact dimensions, material and color specifications, and a description of how the sign will be supported or hung. The commission meets regularly, and applications must be submitted by a set deadline before each hearing date. Check the HDC calendar early — missing a deadline means waiting for the next cycle.

The commission's decisions aren't arbitrary — they're guided by publicly available HDC sign guidelines that spell out permitted sizes, materials, and locations for different sign types in different contexts. Reading those guidelines before you design your sign is worth the time.

Common Mistakes to Avoid

The most common reason applications are continued or denied is incomplete drawings. The commission can't vote to approve something they can't fully evaluate. Bring large, clear, scaled drawings — not a rough sketch or a photo of a similar sign somewhere else.

The second most common issue is sign size. There are specific square footage limits for different sign categories, and first-time applicants often underestimate how small those limits actually are. A sign that feels modest by mainland standards may be oversized for Nantucket. Know the limits for your sign type before you design.

Illuminated signs face additional scrutiny. External illumination — a light directed at the sign from outside — is generally preferred over internal illumination, and the light source itself should not be directly visible from the street. If your sign concept involves any lighting, plan for that conversation with the commission before you finalize the design.

How We Help

We've been making signs for Nantucket businesses for years and we know the HDC process well. We can help you design a sign that fits within the commission's guidelines from the start, produce the drawings and specifications you'll need for your application, and advise on materials and finishes that are most likely to be approved.

We can also produce the sign itself once you have approval — which is the part we find most satisfying. There's something particularly good about a sign that was designed specifically for Nantucket, built by hand on the island, and approved by the commission that's been watching over this place for decades.