Decks & Porches in Bridgewater, Massachusetts

Decks and porches do not qualify for Mass Save rebates. Bridgewater is Eversource territory, but that does not affect deck projects.

The Bridgewater Building Department enforces 780 CMR for deck work. Footings must reach frost depth, approximately 48 inches in Plymouth County. The 44-year median home age produces a housing stock where many decks from the 1980s and 1990s are due for inspection or replacement. Ledger attachment and flashing are the standard inspection concern for permits on homes of this age. The critical local regulatory factor is the Hockomock Swamp and associated wetland system. Any deck project within 100 feet of a wetland, stream, or the swamp border requires a Notice of Intent with the Bridgewater Conservation Commission under the Wetlands Protection Act. Given the Hockomock's size, a meaningful share of Bridgewater residential properties are within this buffer.

File with the Bridgewater Building Department for a building permit. For properties within 100 feet of the Hockomock Swamp, the Town River, or any wetland resource, file a Notice of Intent with the Bridgewater Conservation Commission under the Wetlands Protection Act first. The Conservation Commission process adds four to eight weeks. Standard inspections: footing, framing, and final. Bridgewater does not have a local historic district for most residential areas.

Bridgewater deck costs are in the mid-range for Plymouth County. A pressure-treated pine deck of 200 to 300 square feet typically runs $11,000 to $18,000 installed. Composite decking adds $4,000 to $10,000. Larger lot sizes in Bridgewater often support bigger decks, which shifts the range upward. Conservation Commission consultant and filing fees add $1,000 to $2,500 for wetland-adjacent properties. Three-season porch additions start around $27,000.

Bridgewater is a Plymouth County town of 28,531 residents and 9,567 housing units. The median home age of 44 years places the typical property at around 1982, mostly colonials and split-levels built during growth along Route 18 and Route 28 in the 1970s and 1980s. Lots in Bridgewater tend toward the larger end for eastern MA, with many half-acre and larger parcels outside the town center.

Bridgewater's geography includes the Town River and several tributaries, and the town borders the Hockomock Swamp, one of the largest inland wetland complexes in Massachusetts. The Hockomock is a National Natural Landmark and has extensive state and local regulatory protection. Properties in the southern and western portions of Bridgewater are particularly likely to have wetland buffer concerns.