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Decks & Porches · Randolph, MA

Decks & Porches in Randolph, Massachusetts

Compare contractors serving Randolph, Norfolk County — call them directly, or send one request and let the ones who want the job come to you.

30 contractors serving Randolph.

Contractors serving Randolph

Claimed listings within 5 miles come first, then the rest by rating, then distance. Google ratings as of October 2026. How we list and rank contractors

Decks & Porches in Randolph — what to know

Rebates & incentives

Decks and porches are not eligible for Mass Save rebates. Randolph is in National Grid territory for electric service, but energy incentives don't apply to outdoor structures.

For deck permitting, the Randolph Building Department and, for properties near water, the Randolph Conservation Commission are the relevant authorities. Great Pond in the northern section of town, Hollis Reservoir, Furnace Brook, and mapped inland wetlands throughout Randolph trigger 100-foot buffer zones under the Wetlands Protection Act. Properties near these resources require a Notice of Intent to the Randolph Conservation Commission before the building permit is issued. Standard frost-line footing depth of 48 inches is required in Norfolk County.

Permits in Randolph

Building permits for decks in Randolph are filed with the Randolph Building Department under 780 CMR. Standard checkpoints include footing depth (48 inches), ledger-board attachment and flashing, 36-inch guardrails, and baluster spacing under 4 inches. On Randolph's 1960s and 1970s housing stock, ledger conditions and non-code railings are the most common findings at inspection. The building department handles residential deck permits routinely with turnaround of one to two weeks. Randolph does not have a broad local historic district overlay.

Where a permit is required, decks & porches work in Randolph is filed with the Randolph Building Department; see the Randolph Building Department’s contact, portal and who pulls the permit on permits.llc.

Typical project cost

Deck costs in Randolph sit in the lower-to-mid range for Norfolk County, slightly below the Braintree and Quincy market. Pressure-treated pine decks run $16 to $25 per square foot installed; composite or PVC systems run $27 to $42 per square foot. A full deck rebuild on a Randolph colonial or raised ranch typically runs $19,000 to $36,000 for 300 to 400 square feet. Three-season porch additions start around $27,000. Braintree and Canton contractors are active in this market.

About Randolph homes

Randolph is a Norfolk County town of about 34,691 people with roughly 12,817 housing units and a median home age of 61 years. The housing stock is predominantly 1960s and 1970s colonials, raised ranches, and split-levels on moderate suburban lots. Randolph is one of the South Shore's more affordable inner suburbs, bordering Braintree, Avon, Canton, Holbrook, and Milton.

The town has a mix of established neighborhoods with aging decks that are hitting their 40-to-50-year service life, and some newer infill housing. Great Pond and several other ponds and wetland areas in the town create Conservation Commission jurisdiction over deck projects near those resources.

Common questions — Decks & Porches in Randolph

My Randolph property is near Great Pond. Do I need Conservation Commission approval for a deck?
If the deck is within 100 feet of Great Pond or any mapped wetland, yes. File a Notice of Intent with the Randolph Conservation Commission under the Wetlands Protection Act before applying for the building permit.
My 1968 Randolph raised ranch has a deck with a railing that's about 28 inches high. Is that a code issue?
Yes. Under 780 CMR, guardrails on decks for one- and two-family homes must be at least 36 inches high, with balusters spaced less than 4 inches apart. The 28-inch railing is a code violation that will be flagged at any permit inspection or home sale inspection.
Do I need a permit to replace deck boards on my Randolph house?
If you're replacing only the decking boards with no structural changes, it may be treated as maintenance. However, if any framing, ledger, posts, or railings are being altered, a building permit from the Randolph Building Department is required.
What footing depth is required for decks in Randolph?
At least 48 inches below grade under the Massachusetts building code for Norfolk County. Randolph inspectors check this at the footing stage before concrete is placed.
What are the typical costs for a deck rebuild in Randolph?
A full deck rebuild in Randolph, including new footings, framing, decking, and code-compliant railings, typically runs $19,000 to $36,000 for a 300 square foot deck in pressure-treated pine, or $27,000 to $44,000 with composite or PVC decking.

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