Deck Building in Westbrook, Maine

New decks in Westbrook need a building permit from the Code Enforcement Department, which offers a specific application for basic renovations, alterations, sheds and decks. The department's published guidance sets frost protection for foundations at four feet below grade, so deck footings must reach that depth or deeper. Guards are required where a deck surface sits more than 30 inches above grade, at least 36 inches tall on one- and two-family homes, with openings small enough that a four-inch sphere cannot pass through.

Stairs follow the same published rules: a maximum riser height of 7 3/4 inches, a minimum tread depth of 10 inches, and a graspable handrail on any run of four or more risers. On compact city lots and in newer subdivisions, the setbacks and easements from the subdivision plan can limit where a deck goes, so that should be checked against the deed and plot plan before design begins. Cardinal Exteriors builds new decks in composite, PVC, pressure-treated lumber and cedar, with railings, stairs and landings, built to the rules the city publishes.

The Census Bureau's 2020-2024 American Community Survey estimates about 9,580 housing units in Westbrook, with a median year built of 1975. The stock splits into two eras. About a quarter of homes were built before 1940 and roughly 37 percent before 1960, while close to a quarter were built in 2000 or later, reflecting the city's recent growth. Only about 44 percent of units are single-family detached houses; the rest are duplexes, apartment buildings, condominiums and other attached housing. Around 61 percent of occupied homes are owner-occupied. The older layer includes the mill housing inside the Cumberland Mills Historic District and wood-frame homes like the 1914 Vallee Family House on Monroe Avenue, a clapboard American Foursquare with a hip roof and full front porch.

Westbrook's Code Enforcement Department at City Hall, 2 York Street, issues building permits. The department publishes a building permit application specifically for basic renovations, alterations, sheds and decks, and enforces the Maine Uniform Building and Energy Code: the 2021 International Residential Code and the 2021 International Existing Building Code. Inspections should be booked 48 to 72 hours ahead, and a permit lapses if work does not start within six months. The city also has a Flood Hazard Permit for work in mapped flood zones, and lots near the Presumpscot River may fall within Maine's mandatory shoreland zone, which covers land within 250 feet of a river.

Westbrook sits a few miles inland from Casco Bay at an elevation of about 105 feet, so it misses most of the direct salt spray that coastal towns deal with but gets the full weight of southern Maine winters. Portland, on the city's eastern border, averages about 69 inches of snow a year, with seasons ranging far above and below that, and nor'easters regularly bring a foot or more with strong wind. Away from the ocean's moderating influence, nights run colder, frost goes deeper and freeze-thaw cycles work hard on roofs, flashing and deck footings. The city's own code office sets foundations at four feet below grade for frost protection, a useful benchmark for any new footing.

A new deck starts below ground. Footings have to reach below the frost line so the deck does not heave, the ledger that ties the deck to the house has to be flashed so it never rots the rim, and the framing has to carry snow as well as people. On top of that structure goes the part you see: composite and PVC boards, pressure-treated lumber or cedar, with railings, stairs and landings. Cardinal Exteriors builds new decks and full replacements only; it does not take on deck repairs or staining.

• An owner visits, looks at the yard and the house, and talks through size, layout, stairs and material.
• Permits are pulled where the town requires them.
• Footings are dug or set below frost; posts, beams and joists are framed to span and load.
• The ledger is flashed and fastened with structural fasteners, or the deck is built freestanding.
• Decking, railings, stairs and landings go on, with hidden or face fasteners to suit the boards.

• You want outdoor living space where there is none
• An existing deck is too small or poorly laid out for how you use it
• A new door, addition or view calls for a deck to reach it

• Deck size, height and shape
• Decking material: composite, PVC, pressure-treated or cedar
• Railing style and stair runs
• Footing type and site conditions: ledge, slope, access
• Permits and any shoreland or setback requirements

Every job is priced from a free on-site visit. Typical ranges for the trade are on our deck building page, and the details of this service are on the new deck building overview.

Back to the Westbrook exterior services overview, or see every town on our Cumberland County service areas page.