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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon12
    Verified basement remodels reviews

Top-Rated Basement remodelers in Lewiston - Updated Nov 2026

Avatar for K&A Renovations, LLC
K&A Renovations, LLC
4.9(
24
)
Basement - Remodel

Serving Lewiston, ME and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Small jobs welcome

"They did such a wonderful job. Great guys. I have many projects for them lined up. They’re gonna be my permanent renovation specialists. Thanks for everything guys 😁👍🏼."
Response time1 day
Response rate89%
10 neighbors recently requested a quote
Avatar for Sunapee Builder
Sunapee Builder
4.9(
38
)
Basement - Remodel

Serving Lewiston, ME and surrounding areas

Approved

In business since 1988

Free estimates

Customers say: Quick response

"Fabricated and installed new wooden interior staircase . This replaced a metal staircase. Looks beautiful and allows more light into the home."
Lorello
Fralich
VanBrunt
Lorello
Blanchard

+36

Response time2 days
7 neighbors recently requested a quote
Recommended by63%of homeowners
Avatar for Opulent Builders LLC
Opulent Builders LLC
4.5(
8
)
Basement - Remodel

Serving Lewiston, ME and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

Dominic is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Bathroom Dormer Remodel
Bathroom Dormer Remodel
Bathroom Dormer Remodel
Bathroom Dormer Remodel
Bathroom Dormer Remodel

+13

2 neighbors recently requested a quote
Recommended by100%of homeowners
Summit Contracting
New to Angi
Basement - Remodel

Serving Lewiston, ME and surrounding areas

Approved

\nAs a local general contractor with over 75 years of combined experience in \nresidential trades, we are dedicated to servicing all of your home improvement and maintenance needs. Whether you are looking to build a seamless home addition, transform a room into your dream space, or complete essential repairs, our expert team delivers reliable craftsmanship you can trust.\nContact us today to schedule your complimentary in-home consultation and estimate.

Avatar for Doak and Co Contracting
Doak and Co Contracting
New to Angi
Basement - Remodel

Serving Lewiston, ME and surrounding areas

Approved

In business since 2023

Free estimates

Small jobs welcome

We at Doak and Co Contracting focus on quality services over quantity. We use our experience and expertise to complete your project with perfection. Customer service and honesty are the most important aspects of our business and your satisfaction is guaranteed. Please call us today for an estimate. We look forward to working with you.

Response time10 hrs
3 neighbors recently requested a quote
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Basement Remodel FAQs, answered by experts

Framing a basement takes three to five days, on average, when completed by a professional, though it may take longer for a larger space. Keep in mind this doesn’t include the time to complete the design, obtain permits, and install the drywall on the framing. On average, fully finishing a basement takes an average of 45 days.

It is generally more affordable to finish a basement than an attic, though it ultimately depends on how you plan to use the space. The average cost to finish a basement ranges from $7 to $23 per square foot, while attic renovation costs $30 to $60 per square foot. However, a simple attic conversion to a storage space will cost significantly less.

When choosing materials for finishing basement walls, consider factors such as moisture resistance, durability, and fire resistance. Opt for materials specifically designed for basement environments, like moisture-resistant drywall or cement board. Insulation with vapor barriers can help regulate temperature and prevent condensation. Consider using mold-resistant paints or coatings. 

Research and consult with experts to select materials that are suitable for your specific basement conditions and intended use. Prioritize quality and compatibility to achieve long-lasting and aesthetically pleasing results.

Yes, you can add a bathroom to an unfinished basement, but you’ll want to take proper precautions if doing so. As with any bathroom addition, you’ll need to make sure that it’s approved by local building authorities first. With unfinished basements, you especially need to keep an eye on proper ventilation practices.

The average cost to remodel a basement is between $12,100 and $33,400. Depending on the project's complexity, the price can be as low as $3,500 or exceed $50,200. For a simple project like adding a home office, you might spend between $500 and $3,000. However, a more extensive project, such as adding a bathroom, can range from $6,600 to $16,500. The final cost is influenced by factors like the basement's size and condition, the type of remodel, material choices, your location, and accessibility. For an accurate price, it's best to consult with a basement remodeling team.

The Lewiston, ME homeowners’ guide to basement remodels

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