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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon178
    Verified basement remodels reviews

Top-Rated Basement remodelers in Pelham - Updated Nov 2026

Avatar for Owens Corning Basement Finishing System
Owens Corning Basement Finishing System
4.5(
533
)
Basement - Remodel

Serving Pelham, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1990

Free estimates

Warranties offered

"I couldn’t be happier with the work Owens Corning Basement did remodeling my basement! From start to finish, they were professional, courteous, and attentive to every detail. The team completed the project on time and within budget, keeping me informed throughout the process. The finished basement looks amazing—bright, functional, and exactly what I envisioned. I highly recommend Owen Corning Basement to anyone looking for high-quality remodeling work!"
Media Room Before
Media Room After
Games Room Before
Games Room After
Living Room Before

+128

Response time11 hrs
64 neighbors recently requested a quote
Recommended by69%of homeowners
Avatar for IDEAL SOLUTIONS LLC
IDEAL SOLUTIONS LLC
4.8(
13
)
Basement - Remodel

Serving Pelham, NH and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"The work Ideal Solutions did for me was done professionally and on time. They have an unbelievable attention to detail. They never took the easy way out and made sure I was 100% satisfied. In my experience ideal Solutions are not just carpenters they are craftsmen. Their communication was great and the project was done on budget and on time."
18 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for KATS Construction & Remodel, LLC
KATS Construction & Remodel, LLC
4.3(
35
)
Basement - Remodel

Serving Pelham, NH and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"We hired Tom for a kitchen & half-bath remodel in 2019. As with all remodeling projects, especially a kitchen remodel that disrupts your life, Tom was wonderful at communicating and kept the project on time and on budget. Tom stands behind his work and quickly remediated any issues (which are always inevitable with these projects) and we can absolutely say that we are still 100% satisfied a year later. We completely trusted Tom to make our kitchen remodel dream come true and would hire him again should another project come up!"
Finished Kitchen Remodel
Nashua Kitchen Remodel
Bathroom
Kitchen Remodel
ATTIC BEFOR & AFTER

+64

Response time2 days
49 neighbors recently requested a quote
Recommended by100%of homeowners
Peter Rousseau
4.8(
90
)
Basement - Remodel

Serving Pelham, NH and surrounding areas

Approved

In business since 2009

Free estimates

Small jobs welcome

"Peter has great attention to detail and is extremely meticulous with his work. I felt that Peter went above and beyond with our deck remodel project. He was very consultative with the material selection and provided options and suggestions that most contractors would have overlooked. I highly recommend him and plan on using him again for future projects."
New deck
New deck
New deck
New deck
New deck

+91

Recommended by98%of homeowners
Avatar for O'Regan Construction
O'Regan Construction
4.5(
37
)
Basement - Remodel

Serving Pelham, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1988

Free estimates

Customers say: Quick response

"The finished garage and mudroom addition was first-class, and has garnered a lot of praise by friends and neighbors. The work was diligent, and I was informed of all the work to be done by the contractor and his subcontractors. He was right on with the estimate and informed me if there were any changes and discussed them beforehand. I am very pleased with the job, and would recommend him to anyone looking for work on their homes, big or small."
Completed projects
Completed projects
Completed projects
Completed projects
Completed projects

+311

Response time2 days
9 neighbors recently requested a quote
Recommended by75%of homeowners
Chakar Construction
4.9(
35
)
Basement - Remodel

Serving Pelham, NH and surrounding areas

Approved

In business since 1995

Free estimates

Offers commercial services

"Ramy and his team did an amazing job with our flooring and the remodeling of our bathroom. The outcome was perfection and I couldn’t be more happy with the result. Ramy even helped me save on supply costs by helping me find great alternatives. He is the first person I’ll call for any projects coming up and I can’t recommend him highly enough."
Painting
Painting
Painting
Painting
Painting

+37

4 neighbors recently requested a quote
Recommended by93%of homeowners
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Basement Remodel FAQs, answered by experts

Making a window in a basement larger costs an average of $4,200. You’ll need to pay an average of $550 to have a structural engineer plan the project, $500 to $1,500 for the installation labor, and an average of $2,200 for the excavation and window well installation. The remainder will go toward pulling permits, installing trim, and repairing drywall on the interior.

Adding an extension or addition to your home costs more than a loft conversion in all but the rarest cases where the home's structural integrity is lacking. Because a home addition requires a new foundation section or significant structural upgrades to handle a cantilevered portion, the cost compared to almost any loft conversion is significantly greater for the same square footage.

You should always use high-quality lumber for your framing in order to ensure it will last the test of time and resist moisture. Use 2-foot by 4-foot lumber that is pressure-treated for your framing.

When considering finishing your basement, take into account a few pros and cons:

Pros

  • Can increase the value of your home

  • Separate space from the rest of the house 

  • Customize and personalize the basement to suit your needs and style

  • Increase the amount of living space in your home

Cons

  • May not regain enough value to cover the cost of finishing

  • Lack of natural light if it’s below ground level

  • Moisture or flooding can cause costly damage

  • Installing plumbing and electrical can be messy and costly

The most challenging part of finishing a basement is addressing moisture control. Basement waterproofing is an essential task that requires a professional’s skills and knowledge. If you don’t properly waterproof your finished basement, it’ll be vulnerable to dampness, water damage, and mold growth. Ensuring proper insulation and ventilation to combat these issues while meeting building codes adds complexity to your remodeling project.

The Pelham, NH homeowners’ guide to basement remodels

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