Home Additions & Garages in Maine
An addition is a small house attached to a big one, and it fails where the two meet. The new roof has to tie into the existing roof so water and ice cannot get into the seam, the foundation has to go below frost the same as the original, and the framing has to be tied into the existing structure rather than butted against it. Permits come first — in most Maine towns work starts only after the permit is issued, and we build to that plan.
What the work includes
- Bump-outs, room additions, garages and dormers
- Permit application and inspection coordination with your town
- Foundation and footings set below frost depth
- Framing tied into the existing structure, not simply attached
- Roof tied into the existing roof with proper flashing and ice and water shield
- Siding, windows, doors and roofing matched to the existing house
- Insulation, drywall, trim, flooring and paint to a finished room
What drives the price
We do not publish a flat number, because two houses the same size rarely cost the same. These are the things that actually move it, and we will show you which ones apply after we look.
- Square footage added
- Slab, crawl space or full foundation
- How complex the roof tie-in is — a valley into an existing roof costs real time
- Matching the existing siding, windows and trim
- Interior finish level, and whether it includes a bathroom or kitchen
- Permit fees, engineering and any site work or ledge
Fastest way
(207) 815-1099Call or text anytime
- Free on-site look at the job
- Written scope and firm price
- No deposit before you see the numbers
Where we do this
Maine is home. We work the whole state, border to border.
Additions & garages in Maine — towns we cover
- Portland
- South Portland
- Scarborough
- Westbrook
- Falmouth
- Cape Elizabeth
- Gorham
- Windham
- Saco
- Biddeford
- Brunswick
- Bath
- Lewiston
- Auburn
- Augusta
- Freeport
Common questions
The questions we get asked most about additions & garages in Maine.
Do I need a permit for an addition in Maine?
Yes, in essentially every Maine town, and for a garage or a finished basement too. Requirements and fees vary town by town, and some shoreland and setback rules decide whether you can build where you want at all. We handle the application and the inspections — but the permit gets issued before the first shovel, not after.
How long does a home addition take in Maine?
A simple garage runs a few weeks. A finished room addition typically runs two to four months from permit to paint, with the exterior closed in and weather-tight within the first few weeks. Winter slows foundation and concrete work, so the season you start genuinely matters here. We give you a sequence with the estimate, not just a price.
Can you tie a new roof into my existing roof without leaking?
Yes, and it is the part of an addition that most often goes wrong. The new roof has to be woven or flashed into the existing one, with ice and water shield carried through the valley and up the wall of the existing structure. In Maine we also have to think about snow and ice backing up into that seam, which is why we over-build that detail rather than meeting the minimum.
Is an addition worth it compared to moving?
That is a money question, not a construction one, and it depends on your market and what you owe. What we can tell you honestly is what the addition costs and how long it takes. Compare that against what selling and buying would cost you in fees and in a higher rate on a new mortgage, and the answer is often clearer than people expect.
Related work
Get your free estimate
Send the details and we will call you back — usually the same day. Photos help. Or just pick up the phone.
- Free on-site look at the job
- Written scope and firm price
- Serving all of Maine