Red clapboard cape-style house with a center chimney, shrubs and a sunny lawn
Cumberland County, Maine

Window and siding replacement in Harpswell

Replacement windows and new siding for homes in Harpswell. Here a re-side needs a permit, and a replacement window has to be U-0.30 or lower.

Free estimateWindows, siding or both in Harpswell. Your city’s rules checked first.

By submitting this you agree we may call, text or email you about your project at the number given, including by automated means. Message and data rates may apply. Consent is not a condition of purchase. Reply STOP to opt out. Privacy · SMS terms. Calls may be recorded.

Free written estimate
Permit & code looked up
Windows and siding together
Cumberland, York & Sagadahoc
Windows & siding services

What we do in Harpswell

Harpswell at a glance

Permit to re-side
Required
Window, same opening
Required
New or bigger opening: required
Window must meet
U-0.30 or lower
2021 IECC (statewide)
Built before 1980
51%
Homes in Harpswell, Census 2020–2024
People
5,046
Homes
4,286
Size
24.1 square miles
From downtown
About 15 miles east
ZIP codes
04079, 04066, 04003
Founded or incorporated
1775

Harpswell is Harpswell Neck plus three large islands linked by bridges, Sebascodegan (Great Island), Orr's Island and Bailey Island, and 95 smaller islands, with about 216 miles of Casco Bay coastline. It leads Maine in active lobstering licenses, and the Bailey Island Bridge, built in 1927 and 1928, is thought to be the only cribstone bridge in the world.

The houses in Harpswell

Before 194020%
1940–19599%
1960–197922%
1980–199929%
2000 or later19%

In Harpswell, 51% of homes went up before 1980 and 20% before 1940; the median one dates from 1979. 91% are detached single-family houses, and owners live in 83% of the occupied ones. With most of the housing older than 1980, the federal lead rule is likely on most window and siding jobs here. What the lead rule requires of a contractor.

By the owners' own estimate, the median owned home in Harpswell is worth about $609,700. 62% of homes have three or more bedrooms, and each bedroom needs an emergency escape opening under the egress rule.

Half the homes in Harpswell were built before 1979, which makes its housing about 3 years newer than across Cumberland County as a whole (median 1976). Set against Cumberland County as a whole, owners live in 83% of occupied homes here against 70% county-wide, the median owner-estimated value is $609,700 here and $451,200 across the county and detached houses are 91% of the homes, above the county's 63%.

Rooms in the median home
5.8
Heated with gas / electricity
1% / 7%
Townhouses and other attached homes
1%
Homes in buildings of 2 to 4 units
2%
Homes in buildings of 5 or more units
1%
Mobile homes
5%

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates (tables B25034, B25035, B25024, B25003, B25077, B25041, B25018 and B25040), read through Census Reporter. These are survey estimates, not a count of every house.

What that vintage turns up

The largest group of homes in Harpswell, 29% of them, was built in the 1980s and 1990s, so that is the house described here.

Double-glazed vinyl or clad wood windows with a nailing fin, many now thirty or forty years old. The common failure is the seal between the panes: once it lets go the glass fogs between the layers and the gas fill is gone. When the frames are still square and dry, new sealed glass in the old frame is the cheaper repair; when the frames are cracked or the sills are soft, it is time for the whole unit.

The capes, colonials and raised ranches of the subdivisions that spread across the commuter towns, sided in vinyl or cedar clapboard over plywood or particle-board sheathing, with felt paper or an early house wrap behind it. The siding itself usually holds up; what to look at is what water has done at the corners, around the windows and under any deck ledger fastened through the siding.

The one to watch on a house of this age

Windows of this era were often sealed to the wrap with caulk and little else. When the siding comes off, check the sheathing below each window's lower corners: that is where a failed caulk joint shows up first, as dark, soft wood.

And on the 22% built in the 1960s and 1970s

The bottom of the wall. Panel siding that runs down close to the ground soaks up water and snowmelt, and the rim joist and sill plate behind it rot unseen. On a converted camp, check whether there is any sheathing at all before anyone prices new siding as a simple swap.

Neighborhoods

We work across Bailey Island, Orr's Island, Cundy's Harbor, Harpswell Neck, Sebascodegan Island, Harpswell Center, East Harpswell, North Harpswell, South Harpswell, West Harpswell and Dyer Cove.

Historic districts

Harpswell has 1 listed: Auburn-Harpswell Association Historic District. A National Register listing on its own does not limit what you fit; a local district or landmark designation can, and in several towns here a change of siding material or window sash needs a certificate before the permit. Which towns' rules bind, and how.

Next door

Harpswell shares a boundary with Brunswick, West Bath, Phippsburg, Freeport, Chebeague Island, New Meadows River and Casco Bay.

Worker on a lift painting new shingle and lap siding on a house gable

The rules in Harpswell

Siding replacement Permit required

Yes. Harpswell's 2025 permit flyer says permits are required to enlarge, alter, repair, renovate, remodel or update any existing structure, and lists additions, remodels and replacements as needing one. Siding is not named on its own, but a re-side is a replacement.

Window replacement, same opening Permit required   Enlarging or cutting an opening Permit required

The flyer names it outright: window replacement and exterior door replacement require a permit.

Maine sets this, not Harpswell: U-0.30 or lower

With 5,031 residents in the 2020 Census, Harpswell is over the 4,000 mark at which Maine requires a town to enforce the state's building and energy code.

That is the 2021 energy code’s window figure, with no solar heat gain limit.

ENERGY STAR’s own figure here is U-0.22 or lower with an SHGC of 0.17 or higher, stricter than any code edition in force. When the code applies to a replacement window, and when it does not.

What the permit costs

Work started without a valid permit is charged triple the normal fee, with a $250 minimum.

Local quirks

The Code Enforcement Officer's inspection notice lists exterior weather-resistant siding and glazing among the items checked at the final inspection, which every permit needs; schedule it at least 2 days ahead.

Who to call

Building dept
207-833-5771
Official
Tim Clark, Code Enforcement Officer and Local Plumbing Inspector; Tony Simmons, Code Enforcement Officer and Local Plumbing Inspector
Permits
Department page
12345
What is behind the siding: every layer explained
Gothic-style house with carved bargeboard trim, a pointed window and diamond-pane sashes
Kitchen window with potted plants on the sill and a snowy yard outside
Victorian clapboard house with a mansard roof, bracketed eaves and a columned front porch
Blue clapboard house with a front gable, a covered porch and a green lawn

How Harpswell compares with its neighbors

PlacePermit to re-sidePermit for a windowWindow must meet
HarpswellYesYesU-0.30
BrunswickNoNot publishedU-0.30
West BathYesYesU-0.30
PhippsburgDependsDependsU-0.30
FreeportDependsDependsU-0.30
HarrisonNot publishedNot publishedU-0.30
NaplesNot publishedNot publishedU-0.30

All 25 Cumberland County places side by side →

Work we have done in Harpswell

No completed job in Harpswell on the books yet, and we would rather say so than invent one.

Common questions about Harpswell

When were most of the homes in Harpswell built?
29% went up in the 1980s and 1990s and 22% in the 1960s and 1970s; the median Harpswell home dates from 1979, and 51% are older than 1980 (20% older than 1940). ACS 2020–2024.
Do I need a permit to re-side a house in Harpswell?
Yes: a re-side, a window in the same opening and a new or bigger opening all need one in Harpswell. Yes. Harpswell's 2025 permit flyer says permits are required to enlarge, alter, repair, renovate, remodel or update any existing structure, and lists additions, remodels and replacements as needing one. Next door in Brunswick, a re-side needs no permit.
What U-factor does a replacement window need in Harpswell?
Maine sets it statewide, not Harpswell: a U-factor of 0.30 or lower under the 2021 energy code Maine adopted, with no limit on solar heat gain. With 5,031 residents in the 2020 Census, Harpswell is over the 4,000 mark at which Maine requires a town to enforce the state's building and energy code.
Does Harpswell have historic districts that limit window or siding choices?
Harpswell has 1: Auburn-Harpswell Association Historic District. Check a property's listing before ordering a visible window change.
How much is a building permit in Harpswell?
Work started without a valid permit is charged triple the normal fee, with a $250 minimum.

Where these facts came from

Sources: harpswell.maine.gov · harpswell.maine.gov · harpswell.maine.gov · harpswell.maine.gov · harpswell.maine.gov · harpswell.maine.gov · harpswell.maine.gov · harpswell.maine.gov · harpswell.maine.gov · harpswell.maine.gov · maine.gov · legislature.maine.gov

Yellow clapboard house with black shutters behind a white picket fence
Free estimate

Thinking about it in Harpswell?

A measurement and a written scope costs you nothing and takes about an hour.

Get a free estimate →