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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon31
    Verified basement remodels reviews

Top-Rated Basement remodelers in Stratham - Updated Nov 2026

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

Serving Stratham, 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
68 neighbors recently requested a quote
Recommended by69%of homeowners
Avatar for IDEAL SOLUTIONS LLC
IDEAL SOLUTIONS LLC
4.8(
13
)
Basement - Remodel

Serving Stratham, NH and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"I had an excellent experience with Ideal Solutions on my basement remodel. From start to finish, the team was professional, communicative, and detail-oriented. The quality of the work exceeded my expectations, and the finished basement turned out even better than I imagined. Everything was completed on time, and they made the entire process smooth and stress-free. I would absolutely recommend Ideal Solutions to anyone looking for basement remodeling or home improvement work."
18 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Horsman Builders
Horsman Builders
4.3(
23
)
Basement - Remodel

Serving Stratham, NH and surrounding areas

Approved

In business since 1986

Free estimates

Emergency services offered

"When you find a great contractor, don’t let them go. ;). I hired Tim to build a screen porch under my deck but added several projects as I recognized the high quality of work and attention to detail from his crew. In addition to the screen porch, they built a deck extension - so nice that I decided to have them replace the existing deck, installed a basement slider and replaced the door, installed a new fence and built a shed. Tim was responsive, open, honest and receptive of my requests and additions during the project. Great experience working with Tim and his crew: Dan, Brian, Eddie and Ben. Great job on all the work - I’ve received many compliments from neighbors and guests on the work you did! I can’t recommend Tim and his crew enough."
General Remodeling Project
General Remodeling Project
Additional Photos
Additional Photos
Additional Photos

+4

Response time7 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for DCL Construction
DCL Construction
5.0(
9
)
Basement - Remodel

Serving Stratham, NH and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"We have been wanting to finish our basement for a very long time now but the prices we were given were too high! A friend of ours referred DCL to us and we thought we would give them a shot. The price was right so we started shortly after. They took care of all the paperwork and permits needed! Bob was there for the whole process discussing with us every step of the remodel! Very knowledgable and very well trained team! Our basement looks incredible and we enjoy spending time there! I would recommend DCL to anyone!!"
Completed jobs or on goin
Basement remodel
Basement remodel bathroom added
Basement remodel and bath room added
Basement remodel

+24

Response time6 hrs
2 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Kelleher General Contracting
Kelleher General Contracting
4.8(
50
)
Basement - Remodel

Serving Stratham, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"Kelleher contracting did an excellent job repairing my deck. They showed up on time and finished the work in one day. I would highly recommend them and I would use them for any remodeling projects."
Response time1 day
Response rate92%
57 neighbors recently requested a quote
Torin Soares Contracting
5.0(
14
)
Basement - Remodel

Serving Stratham, NH and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"Torin and Jack were so easy to work with, and they did an excellent job with our basement. It?s clear that Torin is very passionate about his company and the work that they do. We had to re-finish our basement after a pipe burst, and Torin made it easy to meet the requirements of our insurance agency. He provided all of the paperwork we needed in a timely manner, and was able to recreate our previous setup to the satisfaction of the insurance company. We also appreciated Torin and Jack?s flexibility with our schedule. They were very communicative and always let us know when they had openings ahead of our scheduled sessions so that we could continue to make progress on the build. We felt very comfortable with them in our home so often had them come while we were at work. Torin was very easy to work with and we highly recommend his company and will be using them again for future projects. Bonus - Torin and Jack both like dogs, and were super sweet to our pup! She loved having them"
Response time3 days
1 neighbors recently requested a quote
Recommended by23%of homeowners
Avatar for True North Contracting
True North Contracting
4.4(
96
)
Basement - Remodel

Serving Stratham, NH and surrounding areas

Approved

In business since 2005

Free estimates

Small jobs welcome

"Our bathroom remodel was a huge task and Costas, Tony, and Pauly did a great job! Very easy to work with and we never minded having them in our house. Their initial quote was exactly what we paid! Definitely recommend and will hire them for future jobs!"
Roof
Kitchen Reno
Finish
Ready for Grout
 Finished

+66

Response time7 hrs
14 neighbors recently requested a quote
Recommended by93%of homeowners
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Basement Remodel FAQs, answered by experts

It is common for a contractor to ask for a down payment before starting a project, especially for jobs that require purchasing materials and equipment or hiring a crew. The deposit amount can range from 10% to 50% of the total job cost. While a request for up to 50% is not unusual, a contractor should not ask for more than that, and you should never pay for a project in full before the work has begun. To protect yourself, always discuss payment terms before starting and have a written contract that outlines the project timeline and expectations. Additionally, be sure to hire reputable contractors and check their licensing and insurance before the project begins.

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.

Finishing a basement can provide a great return on investment, by increasing the market price of your home when you want to sell. Beyond that, there are many reasons to finish your basement. Doing so expands the usable square footage of your home, so you can enjoy it more, even as your family grows. Renovating your basement costs less in terms of time, energy, and money than having to search for and buy a new home.

You should plan on waiting at least a year and ideally two to three years after construction before finishing your basement. This will give the foundation time to settle in response to the weight of your home and the expansion of the surrounding soil. You can then repair your foundation and seal any cracks as needed before finishing it to reduce your risk of future leaks or other issues.

Since DIYing a basement remodel isn't typically advised, there are some ways that you can still save money on this project without putting yourself in danger. Some ways to save money on a basement remodel include:

  • Painting walls yourself versus including in the cost of the remodel 

  • Installing light fixtures yourself

  • Choosing prefabricated fixtures, like cabinets, over custom ones

  • Choosing a budget-friendly flooring option, like laminate or vinyl flooring, and add rugs where necessary

The Stratham, NH homeowners’ guide to basement remodels

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