
ADU Builder in West Gardiner, ME
Working as an ADU builder in West Gardiner, ME is about as unobstructed as this job gets. Big rural lots, easy delivery access off Exit 102, and no historic district to design around.

An ADU in West Gardiner is a full accessory dwelling unit: a smaller, self-contained home with its own kitchen, bath, and systems, built either as a standalone building or worked into a garage. The larger rural lots along the I-95 corridor here usually give us more room to place one than you get in tighter towns.
We check West Gardiner's zoning rules before any design work starts, so you know what fits your lot up front. The same crew handles the whole job, whether it's a standalone unit or one tied into a garage.
The owner walks your property in person before design or demo begins. That's when you get a straight read on what will work, plus honest numbers on cost and timeline.
Why West Gardiner Residents Hire Us for an ADU
- Owner walks every site personally before design
- Large rural-parcel ADU experience
- Kennebec County focused
West Gardiner residents hire us because we take
advantage of what this town gives you rather than building the cramped version by habit. There is room here to size a unit properly.
- Larger rural lots sized in four-foot increments so material is not wasted
- Well and septic capacity verified before the unit is sized
- Foundation, framing, systems, and finish carried by one crew
- 6Years building across Central Maine
- 100+Garages sold and planned
- 1Owner who walks every job
What homeowners say
Did a great job expanding my one car garage to a two car garage. They did exactly what I wanted, and then some.
Overall, the experience was overwhelmingly positive, marked by consistently excellent communication.
Went above and beyond from start to finish.
Get your free estimate request sent in 60 seconds
Answer a few quick questions about your West Gardiner project. No pressure, no obligation, just a straight answer on cost and timeline.
What other contractor services do we offer in West Gardiner?
Where do we work besides West Gardiner?
Where is our shop?
Directions from West Gardiner, ME to our shop in Augusta
219 Capitol St. Ste. 8Augusta, ME 04330
What Types of ADUs Do We Build in West Gardiner?

ADUs With Living Space, Bonus Rooms, and Rental Units in West Gardiner
Because the lots here allow it, West Gardiner units come out larger than the ones we build in the river towns. That extra floor area is the cheapest part of the whole project. Use it on a real bedroom and a real kitchen rather than a bigger living room. A unit with a proper separate bedroom works for a tenant, a parent, or an adult child, and one big open room only works for one of those. The commuter position off Exit 102 makes a rental genuinely viable here. If that is the plan, build the full kitchen and skip the kitchenette debate entirely.

Building an ADU in West Gardiner: From Permitting to Move-In
A West Gardiner ADU runs permit, site work, foundation, shell, systems, finish, and it runs cleanly. Access from the highway corridor means deliveries are not the obstacle they are in the back towns. The town requires a building permit for new structures and additions, and it is a straightforward filing. We do it as part of the job and put the fee in the estimate. Once permitted, count three to five months of construction. On a dry, open lot with services nearby, that is a realistic schedule rather than an optimistic one.

Garage-Integrated ADU Conversions in West Gardiner
A lot of West Gardiner properties already have a big garage, because there has always been room to build one. Going above it is the fastest ADU available here. If the garage was built in the last twenty years on a proper frost wall, it is often a straightforward conversion. Older pole structures are a different story and need a real floor system. We look at the foundation and the ceiling framing before recommending it. When it works, it is the best value in this town, and when it does not, we say so instead of selling it anyway.
What ADU Services Do We Offer in West Gardiner?
Every stage of a West Gardiner ADU is listed below and every stage is ours. You are not chasing three companies for one building.
- Site work and foundation
- Framing and structural build-out
- Full plumbing, electrical, and HVAC systems
- Kitchen and bath fixture installation
- Finish work and interior build-out
- Garage-integrated ADU conversions
Any one of those is a fair starting point. Adding a proper floor system to an existing garage is a project we quote by itself.
What's our process to building an ADU in West Gardiner, ME?
Get your free estimate.
We look at the septic, the well, and the garage, and talk about what size the lot will comfortably support.
We build it.
Site work, foundation, frame, full systems, finish, all handled by the same crew.
Final walkthrough.
You walk the unit, run everything, and tell us what you want adjusted before we close out.

Why hire us as your ADU builder in West Gardiner, ME?
Hire us as your ADU builder in West Gardiner, ME because we size the unit to what the parcel can actually carry instead of defaulting to small. On these lots, building slightly bigger is the best value on the estimate.
West Gardiner is a rural highway-corridor town along I-95 Exit 102, with Cobbossee Stream running through it and larger parcels throughout. Equipment and material deliveries are simple here in a way they are not in the back roads towns.
That access shows up in the price. Fewer handling days, full truckloads, and no staging problems all pull the site-work line down.
The West Gardiner job we see most is a family building a second dwelling for a relative with a commute. The lot is nearly always adequate, and the septic is the number we go verify.

What do West Gardiner homeowners ask about ADU building?
West Gardiner ADU owners are a mix of families adding a unit for a relative and owners building rental space aimed at the highway commute. The rental case is stronger here than in the more remote towns nearby.
It should sit close enough to the existing services to keep the trench short, with room for its own parking off the drive. Space is not the constraint, so we optimize for utilities and access instead.
Any season works for the shell, and the foundation wants dry ground, so the ideal is permitting over the winter and site work starting in late spring. Good access means we lose fewer days to weather here than elsewhere.
Because the kitchen, the bath, the service, and the foundation cost about the same regardless of footprint, so a larger unit spreads them further. West Gardiner lots have the room to take advantage of that, and most towns we work in do not.
Ask what size they would recommend and why, and see whether the reasoning is about your lot or about their standard plan. Maine does not license general contractors or builders, so the thinking is what you get to judge.
Yes. The Town of West Gardiner requires a building permit for new structures and additions, which covers every ADU. Property near Cobbossee Stream can also fall under Maine's shoreland zoning rules. We file the paperwork and never promise an approval, because that call is the town's.
Budget 2 to 4 months for permitting and design before groundbreaking, then 3 to 5 months of construction. Good site access tends to keep this schedule honest.
The National Association of Home Builders covers the national trend, and on a West Gardiner parcel it is your septic capacity that sets the size.
How much does it cost to build an ADU in West Gardiner?
The cost to build an ADU in West Gardiner runs from around $89,000 for a garage-integrated unit with a kitchenette to $229,000 and up for a standalone unit with a full kitchen. Each band is an average across a great many quotes, and your scope decides where you land inside it.
| Scope tier | What's included | Estimated range* |
|---|---|---|
| Garage-integrated ADU, kitchenette | Bath, kitchenette, 400 to 600 sq ft | $89,000 to $136,000 |
| Standalone ADU, full kitchen | Full systems, 600 to 900 sq ft | $156,000 to $229,000+ |
New well or septic capacity work on a rural West Gardiner parcel can add to the range above.
What does an extra 200 square feet actually cost here?
Less than most people assume, because the expensive systems do not repeat. Going from 600 to 800 square feet adds framing, sheathing, roofing, and floor finish, and none of the four is among the big-ticket items.
Is a new septic field likely on a West Gardiner lot?
It depends entirely on what is already in the ground and how many bedrooms the existing system was designed for. We check that first, because it is the one item that can move the total by a five-figure amount.

Ready to start your West Gardiner ADU project?
Send us the address and roughly what you want the unit to do. We will look at the septic and the garage, then tell you what size makes sense on your parcel.






