Deck builders in Westwood, MA

The median home in Westwood dates to about 1968, roughly 58 years ago. Most homes from that era were built without a deck; the decks you see now were usually added in later decades, sometimes by previous owners with little documentation.

That history matters: retrofit decks are where missing ledger flashing, undersized footings and nailed-rather-than-bolted connections are most common. Before resurfacing or extending an add-on deck, it is worth confirming how it was framed and attached.

That makes Westwood's housing 4 years newer than Norfolk County as a whole, where the median home was built in 1964. Statewide, the median Massachusetts home was built in 1964. Among the 113 covered Massachusetts communities with Census data, Westwood ranks #75 for oldest housing. In this ZIP code, 40% of homes were built before 1960, 24% between 1960 and 1979, 20% between 1980 and 1999, and 16% since 2000 — the single largest group dates to the before 1940.

The nearest NOAA climate station with 1991–2020 normals is Norwood Mem AP, about 3 miles away. It records an average of 139 days a year with a low at or below 32°F — a substantial freezing season. On roughly 115 of those days the temperature climbs back above freezing, so water in wood, soil and gaps between boards repeatedly freezes and thaws.

For Westwood, that means footings must bear below the locally required frost depth to avoid heaving, and wood surfaces should be kept sealed so absorbed water doesn't split boards over winter. Synthetic decking tolerates freeze-thaw well but still needs the manufacturer's expansion gaps.

Snow is a major factor: the Walpole 2 station averages about 56.1 inches a year. Framing has to carry snow load, stairs need a plan for winter use, and snow removal should be done with plastic-bladed shovels and ice-melt products the decking manufacturer allows.

Westwood sees about 49.7 inches of precipitation a year, with measurable rain or snow (0.1 inch or more) on about 85 days. Good drainage between boards, clean gaps and a ledger that is properly flashed keep that water from rotting the frame.

Average summer highs reach about 84°F, and around 16 days a year top 90°F. On a deck with full afternoon sun, dark composite can get uncomfortable on those days, so test samples in the sun before choosing a color.

On Westwood's many older homes, a wood-look capped composite or a stained cedar deck usually suits the architecture better than high-gloss boards.

Westwood has about 5,796 housing units across its covered ZIP code. 79% are single-family detached homes, 2% are attached homes such as townhouses and rowhouses, and about 19% are in buildings with two or more units. Roughly 87% of occupied homes are owner-occupied.

Detached single-family homes dominate in Westwood, so most decks are backyard decks attached to the rear of the house. That gives more freedom on size, layout and stairs, and makes a well-planned deck one of the most-used rooms of the home.

• Retrofit decks on older homes: about 3,002 homes (52%) predate 1970. Here the priority is confirming that add-on decks are properly attached — or rebuilding them freestanding — before any cosmetic work.
• Replacement and major repair: about 1,875 homes (32%) were built between 1970 and 1999, the age group whose original or early add-on decks are most likely to have worn-out framing, connectors and boards.
• Upgrades and expansions: about 623 homes (11%) were built since 2010. Their decks are usually sound but small or builder-grade, so enlarging the deck, adding stairs and switching to composite or upgraded railings are common.

Westwood has a defined building season. Spring and early fall offer the most comfortable working weather; winter is a good time to settle the design and apply for permits. Stains and sealers generally need dry weather and moderate temperatures, so plan wood finishing for late spring or early fall.

For Westwood, MA, ask the permit office whether your deck needs a permit based on its size, height and attachment to the house, which drawings and inspections are required. Statewide code background for Massachusetts is on our state page; local rules change, so the building department remains the authority.

The closest covered area is Norwood, about 2.6 miles from the center of Westwood's covered ZIPs. Its median home was built in 1960, 8 years earlier than in Westwood. Westwood has 32 percentage points more detached single-family homes (79% vs. 47%), which changes how many projects are backyard decks versus compact townhouse decks. Owner-occupancy is 87% in Westwood compared with 54% in Norwood. Westwood's covered ZIP code span about 10.9 square miles of land with roughly 5,796 homes — about 532 per square mile, a low density that usually allows larger decks and freestanding designs.