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Find Basement remodelers in Portland

Avatar for Owens Corning Basement Finishing System
Owens Corning Basement Finishing System
4.83(
342
)

Angi Approved

Super Service Award Winner

In business since 1990

Free estimates

Customers say: True professional

"Very good experience, they handled all permits and kept me updated every step of the way. Always arrived on time, very professional, amazing craftsmanship and when they were done they left a perfectly clean area. Would definitely recommend"
130 neighbors recently requested a quote
Recommended by78%of homeowners
Avatar for Total Basement Finishing
Total Basement Finishing
4.00(
5
)

Angi Approved

In business since 1989

Free estimates

Warranties offered

"The company (Black Dog) was hired to expand the bathroom and part of the basement renovation. The project started in October 2020 and it is still going through May 2021 with an unclear restart date after 2 no shows. It was promised to finish by Christmas. The company used 2 different colors of grout in the same room. They are planning to come back and redo it, waiting for 2 months now. They do not want to spend time on fixes. Leakage around the shower was noted, they promised to contact the subcontractor, but I have not heard from them yet. There are minor things missing, would pay attention to their contract as they may not do things like shelves installation as originally discussed. They seemed professional on initial evaluation and at the beginning, but now I am regretting that I hired them."
12 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Leviathan Group LLC
Leviathan Group LLC
5.00(
5
)

Angi Approved

In business since 1996

Free estimates

Customers say: Quick response

"We had our kitchen completely remodeled by Hutchins and Son. Owner Don is great to work with. He was able to provide us with the exact custom cabinets and custom color we were looking for. I highly recommend Don and his son ."
5 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Black Bear Construction
Black Bear Construction
4.71(
17
)

Angi Approved

In business since 2021

Free estimates

Emergency services offered

"Kyle and his team did a great job building doorways and installing doors in my upstairs. I have already hired them for a second round of work in my home! "
14 neighbors recently requested a quote
Recommended by47%of homeowners
Avatar for APEX Builders LLC
APEX Builders LLC
5.00(
2
)

Angi Approved

In business since 2024

Free estimates

"I hired APEX builders for an additional bathroom at one of my properties and I could not be happier. The bathroom came out beautiful. Billy was super easy to work with and his communication was the best part. I always knew what was going on, where we were in the process and what was next. Highly recommended for any project. I will be using them again."
1 neighbors recently requested a quote
Avatar for Maclean building
Maclean building
New to Angi

Angi Approved

In business since 0

Free estimates

I’m a self employed independent contractor of 22 yrs with 35 years experience in remodeling and new construction , insured and take jobs one at a time and always strive for perfection at a fair price , specializing in superior finished basements , all steps performed by me and my help, no subs , quality work with ten year workmanship warranty !!!

3 neighbors recently requested a quote
Joshua Indermuehle
New to Angi

Angi Approved

In business since 0

I'm a carpenter, handyman, and Builder with 30 years experience working in and around the Portland area. I can handle anything from small handyman projects to additions and garages, I have a lot of experience doing full remodels, additions, roofing and siding, decks, built-in Cabinetry, and sheds.

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FAQs for basement remodeling projects in Portland, ME

Finishing a basement turns unused square footage into livable space and returns up to 70% of what you spend when you sell your home. Beyond that resale boost, you gain a playroom, home office, or guest suite you can start enjoying right away. That mix of daily comfort and solid return on investment (ROI) makes basement finishing one of the smartest upgrades you can tackle.

In some parts of the country—especially lots on swamps, high water tables, or other wetlands—local codes prohibit basements. Saturated soil puts constant pressure on foundation walls and lets water seep in faster than any sump pump can handle. 

If your property sits on waterlogged ground, building on a slab or crawl space is often safer, more affordable, and code-compliant.

Most basements wrap up in four to eight weeks. Framing takes three to five days, with electrical and plumbing rough-ins following over the next week. Add five days for drywall, two to three for flooring, and another week for paint, trim, and punch-list items. 

Delays can happen if materials run late or your contractor’s calendar is packed, so build in a little cushion when you plan.

Whether a finished basement counts toward your home’s official square footage depends on local rules. Many areas only include below-grade space if it has code-approved egress, fully finished walls, ceilings, and floors, plus consistent heating. 

Check with your local assessor or building department before you start; meeting those standards can affect taxes, appraisals, and resale value.

Building codes require a checklist: dedicated heat and electrical service, a code-approved stairway, and at least one egress window or exterior door. Walls, ceilings, and floors must be fully finished and meet insulation, ventilation, and fire-separation standards. If you add a bedroom, you’ll also need a closet, proper clearances, and safe exits. If you change the layout later, be ready to update the space so every new room still meets today’s code.

The Portland, ME homeowners’ guide to basement remodelings

From average costs to expert advice, get all the answers you need to get your job done.