Build a Space That Feels Like Home

ADU Construction Services in Southern Maine

If you're adding an accessory dwelling unit to your property in Casco, you need more than just walls and a roof. You need a space that feels deliberate, comfortable, and well integrated with your existing home. Whether you're planning an in-law suite, a detached studio, or a rental unit, the finish work and custom carpentry are what turn a functional structure into a place someone actually wants to live. Mainleand Carpentry & Finish works with homeowners in Casco to build ADUs that reflect how the space will be used and who will be living there.

This service includes custom carpentry and construction support throughout your ADU project, with a focus on high-quality trim work, built-ins, and wood accents that elevate the space beyond basic utility. The team works closely with you to understand your goals for the unit, then translates those ideas into clean finishes and thoughtful details that make the ADU feel intentional. From cabinetry and shelving to door casings and baseboards, every element is crafted to fit the layout and purpose of the room.

If you're still in the planning stage and want to talk through layout ideas or custom carpentry options for your ADU in Casco, reach out to start the conversation.

How the Work Takes Shape on Your Property

Once the structure is up and the mechanicals are roughed in, the carpentry begins with installing trim, doors, and casings that match the style you've chosen for the unit. In Casco, where ADUs are often built to complement existing homes, the finish work is what makes the new space feel cohesive. You'll see baseboards fitted tight to the floors, corner joints that line up cleanly, and door frames that sit square and solid.

After the trim is installed, custom built-ins and wood accents are added based on how the space will be used. If the ADU includes a kitchenette, you might see open shelving or a bench seat with storage underneath. If it's a bedroom suite, closet systems and window trim become the focus. The goal is to make the unit feel finished and functional without wasted space or awkward gaps.

All work is completed with attention to detail and clean finishes, using materials that hold up well in Maine's climate. The team is fully insured and communicates clearly throughout the project, so you know what's happening and when. This approach works well in higher-end residential settings where the quality of the finish work matters as much as the structure itself.

"I want you to love the space you're in."

- Ian Beaule

Building an ADU is a big project, and it helps to know what to expect before you start. These questions cover the practical details most homeowners want to understand early on.

It's Normal to Have Questions Before You Commit

What does custom carpentry include in an ADU project?
Custom carpentry covers trim work, baseboards, door and window casings, built-in shelving, cabinetry, closet systems, and any wood accents that make the space feel finished and functional. The scope depends on how you plan to use the unit and what level of detail you want.
How early should I involve a finish carpenter in the planning process?
It's best to reach out during the design or permitting phase, before framing begins. Early involvement allows the carpenter to suggest layout changes, built-in options, or material choices that improve the final result without adding cost later.
What makes an ADU feel integrated with the main home?
Matching trim profiles, door styles, and wood finishes helps the ADU feel like part of the same property. Thoughtful details like consistent baseboard height and similar hardware also create visual continuity between the two structures.
How long does the finish carpentry portion of an ADU take?
For a small ADU with basic trim and a few built-ins, finish carpentry typically takes one to two weeks. Larger units with custom cabinetry, detailed millwork, or multiple rooms may take three to four weeks, depending on the scope and weather conditions in Casco.
Why does finish work matter more in an ADU than a garage or shed?
An ADU is a living space, and people notice details like uneven seams, gaps around doors, or poorly fitted trim when they spend time there. Clean finish work makes the unit feel comfortable and well built, which matters whether someone is renting it or you're housing a family member.

Mainleand Carpentry & Finish is a veteran-owned business serving Casco and the surrounding area, known for clear communication and a customer-first approach. If you're planning an ADU and want to talk through your ideas or get a sense of what's possible with custom carpentry, get in touch to start the discussion.