Decks & Porches in Edgartown, Massachusetts

Edgartown is in Eversource territory. Decks do not qualify for Mass Save rebates regardless of utility. The regulatory framework for deck work in Edgartown involves multiple layers: the state building code (780 CMR) via the Edgartown Building Department, the Wetlands Protection Act and the Edgartown Conservation Commission for the town's extensive coastal resources, and the Edgartown Historic District Commission for properties within the local historic district. Katama Bay, Edgartown Great Pond, the harbor, and the South Beach wetland system mean most properties in town are within the Wetlands Protection Act's 100-foot buffer. The Edgartown Historic District covers a significant portion of the village and requires review of exterior alterations including decks and porches visible from the street. Frost footings to 48 inches are required.

File for a building permit with the Edgartown Building Department. For nearly all Edgartown properties, expect to also file with the Conservation Commission under the Wetlands Protection Act. Properties in the historic district need Edgartown Historic District Commission approval before the building permit can issue. Island logistics (ferry transport, limited contractor availability) extend project timelines significantly. Start permitting 6-9 months before your target construction window.

Edgartown is at the top of the Massachusetts deck market. Island logistics add 25-40% to comparable mainland costs. A pressure-treated pine deck in the 300-400 square foot range runs approximately $30,000-$50,000 installed. The high property values, historic character, and coastal conditions push the vast majority of Edgartown owners toward cedar, mahogany, or premium composite (Azek, TimberTech). Historic district properties may require specific materials and millwork. Screened porches on Vineyard properties start around $60,000 and can run well above $100,000 on larger harborfront homes.

Edgartown is a Dukes County town on Martha's Vineyard with 5,159 residents and 5,176 housing units, a near-equal resident-to-unit count that reflects the island's year-round and seasonal housing mix. The median home age is about 43 years, younger than many Vineyard towns but still encompassing a broad range of housing types. The town is the county seat and has a well-preserved historic village center with Federal and Greek Revival architecture from the 18th and 19th centuries.

Edgartown sits on the eastern side of Martha's Vineyard facing Nantucket Sound and Chappaquiddick Island. Katama Bay, Edgartown Great Pond, and the South Beach barrier beach define the coastal geography. Nearly every residential parcel in Edgartown is within meaningful proximity of a coastal resource, and the town's historic district adds an additional layer of review for properties in and near the village center.