Deck Building in Falmouth, Maine

Most Falmouth lots have room for a deck, and many have a view worth building one for: Casco Bay from the Foreside, Highland Lake on the western edge, or woods and fields in West Falmouth. The first questions are permits and setbacks. A new deck is construction under Falmouth's building permit rules, and the town lists what to submit on its Construction Submittal Checklist. Its guidance says a complete permit is generally issued within about two weeks, depending on workload.

If the house sits within 250 feet of Casco Bay, the Presumpscot River, Highland Lake or a qualifying wetland, it is inside the shoreland zone, and the town advises calling the office before clearing, filling or disturbing soil there, since a shoreland permit and possibly Planning Board review may apply. Footings have to reach below frost so the deck does not heave in winter, and the ledger must be flashed and bolted to the house, not nailed. Cardinal Exteriors builds new decks and full replacements, not repairs, in composite, PVC, pressure-treated lumber or cedar, with railings, stairs and landings sized for the site.

Census estimates for 2020 to 2024 count about 5,300 housing units in Falmouth, with a median year built of 1986. Roughly 14 percent went up before 1940, about 16 percent between 1960 and 1979, about 31 percent in the 1980s and 1990s, and about 27 percent in 2000 or later. Around 84 percent of occupied homes are lived in by their owners, and about 81 percent of all units are single-family detached houses; the town's 2024 comprehensive plan notes that fewer than 10 percent sit in buildings of three or more units. An older layer runs underneath the subdivisions: a 1992 to 1993 survey recorded 985 buildings from before 1945, including farms, schools and summer homes in colonial, Federal, Greek Revival, Italianate and Romanesque styles. About 190 units are held for seasonal use.

Permits come from the Community Development Code Enforcement Division at 271 Falmouth Road. The town enforces the Maine Uniform Building and Energy Code, which means the 2021 International Residential, Building, Existing Building and Energy Conservation Codes. Its permit guidance says work that alters or repairs a structure needs a building permit, and it specifically requires one for replacement windows so egress can be checked. Painting and similar finish work is exempt; roofing, siding and decks are not on the exempt list. Shoreland zoning covers land within 250 feet of Casco Bay, the Presumpscot River, Highland Lake and qualifying wetlands, and within 100 feet of designated streams.

Falmouth has no weather station of its own; the nearest long-term record is Portland International Jetport, a few miles away, where snowfall averages about 69 inches a year and February nights average around 17 degrees under the 1991 to 2020 normals. The coldest reading on that record is 39 below zero, in February 1943. Along Falmouth Foreside, houses face open water on Casco Bay and take the brunt of northeast storms, wind-driven rain and salt carried off the bay. Inland toward West Falmouth and Highland Lake the salt load drops, but tree cover, lake humidity and long stretches of freezing and thawing work on roofs, trim and deck boards instead.

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 Falmouth exterior services overview, or see every town on our Cumberland County service areas page.