
Siding, Roofing, Windows & Decks in Portland, Maine
Portland holds some of the oldest housing in Maine. Census estimates put the median home here at 1946, and close to half of the city's dwellings went up before 1940. That means clapboard over old sheathing, wood sash windows, and roofs that have been layered more than once. Cardinal Exteriors is a family-owned siding, roofing, window and deck company based in the city, and this page covers what matters for Portland houses, from peninsula triple-deckers to Deering capes and island cottages.
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Portland homes and what they need
Portland has roughly 36,600 housing units, and the American Community Survey estimates a median year built of 1946. About 46 percent predate 1940 and about 61 percent predate 1960, while only about 16 percent date from 1960 to 1979 and about 11 percent from 2000 or later. Owners occupy about 47 percent of occupied homes, and single-family detached houses make up only about 36 percent of the stock, so multi-unit buildings are the norm rather than the exception. After the Great Fire of 1866 the peninsula was rebuilt largely in Victorian and Italianate styles, and wood-framed triple-deckers fill much of the older residential grid. Off the peninsula, Deering and the outer neighborhoods run to capes, colonials and mid-century houses. The census also counts nearly 1,900 seasonal units, many of them island cottages in Casco Bay.
Weather and exposure in Portland
Portland sits on a peninsula in Casco Bay, and exposure changes block to block. Houses on the eastern and western ends of the peninsula, along the harbor and on the islands take wind straight off the water, while inland neighborhoods such as Deering and Stroudwater are more sheltered. Snowfall averages about 69 inches a year, but the city has seen seasons as light as 30 inches and as heavy as 150. Severe nor'easters arrive in winter with wind-driven rain and snow that finds any gap in old clapboard, trim or window casing. Repeated freeze and thaw works on paint, caulk and shingles, and salt air on the waterfront and islands speeds corrosion of fasteners, flashing and exposed metal.
Portland neighborhoods and architecture
The city runs from the Old Port and its restored brick warehouses to wood-frame neighborhoods like Munjoy Hill, the West End, Parkside and East Bayside, then out to Deering Center, Rosemont, Riverton and North Deering. Stroudwater, at the meeting of the Stroudwater and Fore rivers, grew around a mast landing founded by Thomas Westbrook in 1727. The Deering Street district holds architect-designed houses from the second half of the nineteenth century. Portland also governs Peaks, Great Diamond, Little Diamond, Cushing and Cliff islands. Peaks, about three miles from downtown by Casco Bay Lines ferry, swells by thousands of people each summer.
Permits and design review in Portland
Building permits in Portland go through the city's Permitting and Inspections Department, which handles permits, licensing and inspections in one office. A new deck is structural work and needs a building permit; ask the department whether a given roof, siding or window job needs one before work starts. Portland also has a strong historic preservation ordinance. Properties in local districts including the West End, India Street, Congress Street, Deering Street, Stroudwater and the Old Port waterfront need a certificate of appropriateness for exterior alterations, reviewed by preservation staff or the Historic Preservation Board. Waterfront and island lots may also fall under shoreland zoning.
Portland at a Glance
What the housing stock and local code enforcement mean for a siding, window, roofing or deck job here.
68,408
Population (ACS estimate)
Median year built: 1945
Original wood clapboard or shingle siding, wood-sash windows and multi-layered roofs are common here.
State Building & Energy Code (MUBEC)
Enforced — population over 4,000
EPA Lead-Safe Rule (pre-1978 homes)
Applies to at least 60% of homes here
Historic District
Exterior work may need design review
Shoreland Zoning
Applies near the water
Permits
Permitting and Inspections Department, City of Portland
Codes & Permits for Exterior Work in Portland
In Portland, exterior-work permits come from the Permitting and Inspections Department, City of Portland (389 Congress St, Room 315, Portland, ME 04101, 207-874-8703). With 68,408 residents, over 4,000, Portland is required to enforce the Maine Uniform Building and Energy Code (MUBEC). The West End, India Street, Congress Street, Deering Street and Stroudwater local historic districts require a certificate of appropriateness for exterior alterations, reviewed by the Historic Preservation Board.
- Maine's adopted 2021 IRC requires all exterior wall coverings (siding) to be installed per the applicable code section and, where referenced, the manufacturer's installation instructions, with fastener penetration and spacing set by Table R703.3(1) — a full-envelope re-siding job (removing sheathing/house-wrap, not just cladding) is code work subject to a building permit in mandatorily-enforcing towns even where a simple like-for-like cladding swap might be treated as exempt maintenance by a given town; permit posture for the latter varies by municipality. up.codes
- A weather-resistive barrier is required under exterior wall coverings generally (R703.2), meaning a proper re-siding job that exposes the sheathing must also address the house-wrap/felt layer, not just the visible cladding. up.codes
- Maine's Shoreland Zoning Act creates a regulated shoreland zone extending 250 feet (horizontal distance) from the normal high-water line of any great pond, river, or coastal wetland, and 75 feet from certain streams; the Act's stated purposes include protecting buildings and land from flooding/erosion and controlling water pollution, and it governs deck and other structure setbacks and the expansion of nonconforming structures within that zone (specific setback/expansion rules are set at the municipal-ordinance level under the state's model guidelines). maine.gov
- By Maine law (25 M.R.S. §2373), 'the code must be enforced in a municipality that has more than 4,000 residents' (per the most recent federal census); municipalities at or below that population are not required to adopt/enforce MUBEC but may opt in locally, per the state's own program page: 'All municipalities with a population greater than 4,000 are required, by statute, to enforce the MUBEC. Municipalities with a population under 4,000 may choose to enforce the MUBEC.' mainelegislature.org
How Cardinal Exteriors Handles Exterior Work in Portland
- With 68,408 residents, Portland is over Maine's 4,000-resident line, so the town enforces the statewide Uniform Building and Energy Code (MUBEC) on top of its own permit process.
- At least 60% of Portland's homes predate 1960 — well ahead of 1978, when the EPA's lead-safe renovation rule kicks in — so we plan for lead-safe work practices on exterior work whenever painted surfaces come off an older house here.
- The West End, India Street, Congress Street, Deering Street and Stroudwater local historic districts require a certificate of appropriateness for exterior alterations, reviewed by the Historic Preservation Board. That review is worth confirming with the town before materials are ordered, not after.
- Portland's shoreline, lake or river frontage falls under Maine's Mandatory Shoreland Zoning Act, so we check setback rules before work starts near the water.
- We file for exterior work permits at the Permitting and Inspections Department, City of Portland before work starts, not after.
A Victorian home on Neal Street in Portland's Western Promenade Historic District, developed in the late 1800s with Second Empire, Italianate, Queen Anne and Shingle-style houses.
Street View © Google
Exterior services in Portland
Each page below covers one job in Portland: what the town's houses and weather mean for it, what the work involves, and what moves the price. For the full picture of a trade, see our siding, window replacement, roofing and deck building pages.
Siding in Portland
- Siding Replacement in PortlandMost of Portland's siding problems start with age.
- Vinyl Siding Installation in PortlandVinyl makes the most sense on Portland's post-war and later houses off the peninsula, and on multi-family buildings where the owner wants to stop repainting three stories of clapboard.
- James Hardie Fiber Cement Siding in PortlandJames Hardie fiber cement suits Portland's older housing because it reads like painted wood.
- Cedar Siding & Shingles in PortlandCedar belongs on a lot of Portland houses.
Windows in Portland
- Window Replacement in PortlandPortland's housing is old enough that many homes still have original wood sashes, sometimes with storm windows added, sometimes not.
- Bay & Picture Windows in PortlandViews are the reason many Portland owners ask about bigger glass.
Roofing in Portland
- Roof Replacement in PortlandPortland roofs take a mix of heavy snow, nor'easter wind and freeze-and-thaw cycles, and many older houses carry more than one layer of shingles over original board sheathing.
- Asphalt Shingle Roofing in PortlandArchitectural asphalt shingles are the default on most Portland houses outside the flat-roofed triple-decker stock.
- Metal Roofing in PortlandMetal roofing suits certain Portland houses very well: island cottages where getting a roofer back often is hard, homes on exposed lots near the water where wind tears at shingles, and outbuildings and additions with simple roof lines.
Decks in Portland
- Deck Building in PortlandNew decks in Portland are shaped by small lots.
- Composite & PVC Decks in PortlandComposite and PVC boards fit Portland conditions well.
- Deck Replacement in PortlandOlder Portland decks were often built to looser standards than today's, on footings that may not reach below frost and with ledgers fastened to the house without flashing.
Towns near Portland
Nearby service areas
Cardinal Exteriors is a family-owned Portland company that works across Cumberland County and the Maine coast from Saco to Bath. See the full list on our service areas page.
Get a free exterior estimate in Portland
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Need it today?Call Mike (207) 408-5388
or Bob at (207) 252-0759
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