Deck Replacement in Cape Elizabeth, Maine

Decks added to the town's mid-century houses decades ago were commonly built in pressure-treated lumber, and older decks were not always set on footings below frost depth. After decades of salt air and freeze-thaw, the visible problems are split boards and wobbly rails, but the ones that matter are underneath: rotted ledger boards bolted to rim joists without flashing, corroded connectors, and posts that heave each winter.

Cardinal Exteriors does not repair decks. It replaces them from the footings up, which is the reliable fix when framing and footings are compromised. A replacement is new construction and needs a building permit from the Code Enforcement Office. On a waterfront lot, a new deck that grows beyond the old footprint must meet shoreland setbacks, and decks near protected wetlands are limited to footprint expansion that stays at least 25 feet from the wetland edge. The new structure gets flashed ledger connections, code-compliant guards and stairs, and a deck surface in composite, PVC, cedar or pressure-treated wood, all priced in a fixed written proposal before work starts.

The Census Bureau's 2020-2024 American Community Survey estimates about 3,980 housing units in Cape Elizabeth, and roughly 90 percent of them are single-family detached houses. About 88 percent of occupied homes are owner-occupied. The estimated median year built is 1967. Close to 40 percent of the stock predates 1960, including about one in five homes built before 1940, and another quarter went up between 1960 and 1979. Only around 7 percent was built in 2000 or later, so most houses here are old enough to have outlived at least one roof and one round of siding. The older layer includes summer houses from the late nineteenth century, when Portland architect John Calvin Stevens designed Shingle Style cottages along the Casco Bay shore. The survey also counts roughly 210 seasonal units, homes that may sit closed through the winter.

Permits run through the Cape Elizabeth Code Enforcement Office, 320 Ocean House Road, which has accepted building applications online since May 2025. Its FAQ states that a building permit is required to construct, structurally alter or enlarge a structure, and that no permit is required to replace siding or roofing. A new deck needs a building permit. The town's Shoreland Performance Overlay District covers land within 250 feet of tidal waters, Great Pond and the Spurwink River, with a 75-foot setback for new structures from most water bodies. Resource protection permits go through the Planning Office, and work in a mapped flood zone needs a Flood Hazard Permit.

Cape Elizabeth has almost no shelter from the sea. The land faces open ocean to the east and south, so wind off the Gulf of Maine arrives with salt spray and nothing to break it, and nor'easters push rain sideways into siding joints, window heads and roof edges. Portland, just to the north, averages about 69 inches of snow a year, with large swings between winters, and storms that bring a foot or more are a regular part of the season. The ocean moderates temperatures near the shore, which means more winter days that hover around freezing and more freeze-thaw cycles on shingles, flashing and deck footings. Fog and damp air keep north-facing walls and shaded roofs wet longer than inland houses see.

When an old deck is soft, wobbly or pulling away from the house, a full replacement is treated as a new build: the old deck comes off, the footings and framing are built new, and the new surface, railings and stairs go on. That is the only way to deal with hidden rot at the ledger and frost-heaved footings, and it is how Cardinal Exteriors approaches it. It lets you change the size, shape and material at the same time.

• The existing deck is removed and disposed of, and the house wall behind the ledger is inspected.
• Rotted rim or sheathing behind the old ledger is repaired and the wall is flashed.
• New footings go below frost; new posts, beams and joists are framed.
• New decking, railings, stairs and landings are installed in the material you choose.
• Permits are pulled where required and the site is cleaned up.

• Soft or spongy boards and joists
• A ledger pulling away from the house or rust-streaked fasteners
• Posts that have heaved, leaned or rotted at the base
• Railings that wobble or are lower than today's code expects

• Removal and disposal of the old deck
• Repairs to the house wall behind the ledger
• New size, height and shape
• Decking and railing materials
• Footing type and site access

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 deck replacement overview.

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