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Find Basement remodelers in Merrimack

Ayotte Home Improvements
4.5(
88
)

Serving Merrimack, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Warranties offered

"I had a similar experience to others who have reviewed Ayotte Home Improvements. I hired them for a complete kitchen and mudroom remodel. Bob and his sidekick are the two main characters and they have a group of very competent sub contractors that they bring in depending on your project requirements. From the initial meeting to completion, Bob was very easy to work with. He is fully engaged during the process, keeps you informed, keeps the project moving, and insists on high quality. In my opinion you can't go wrong with them."
Before
After
After
Additional Photos
Response time2 days
8 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Extreme Makeover Custom Home Repair Handyman, LLC
Extreme Makeover Custom Home Repair Handyman, LLC
4.6(
159
)

Serving Merrimack, NH and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"I was so happy with my previous bathroom remodel from Extreme Makeover I hired John again to do another Project on the upstairs bath. Again, the results were better than I anticipated. John Leahy, owner and his associate John produced a beautiful and updated look. The craftsmanship was impeccable and they were always on time and finished the project earlier than promised. John is very courteous and approachable and is easy to relate to. I know you will be very pleased with Extreme Makeover for your next home project."
Additional Photos
Sun room
decking and siding
library
Response time1 day
2 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for IDEAL SOLUTIONS LLC
IDEAL SOLUTIONS LLC
4.8(
13
)

Serving Merrimack, 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."
2 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Anything & Everything Home Improvement LLC
Anything & Everything Home Improvement LLC
4.6(
70
)

Serving Merrimack, NH and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"The owner, Jesse Bourque, was wonderful to work with. He always responded to our questions and text messages very promptly. The quality of the workmanship was excellent. Each carpenter we encountered took professional pride in a job well done. I wouldn’t hesitate to use him for any construction project small or large."
Exterior transformation
Full exterior
Full exterior
Full exterior
New decks and porches

+14

2 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for KATS Construction & Remodel, LLC
KATS Construction & Remodel, LLC
4.3(
35
)

Serving Merrimack, NH and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"We hired KATS Construction for a Kitchen dining room remodel with removal of walls. Tom referred us to a very reputable cabinetry company who did an awesome job as well. The contractors were very professional, courteous and prompt. Tom was always in communication as to schedules of his crew, and available to answer any questions or concerns we had. He took care of any permits and approvals that were needed. Due to personal emergency we needed to stay home through the construction since day 1. Tom and his crew all went above and beyond to make sure we had what we needed to stay in the house. We are very pleased with the outcome. It feels like a brand new home. I would highly recommend KATS Contruction, Tom and his crew, We thank them all."
Finished Kitchen Remodel
Nashua Kitchen Remodel
Bathroom
Kitchen Remodel
ATTIC BEFOR & AFTER

+64

Response time2 days
52 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Berube and Son Construction LLC
Berube and Son Construction LLC
5.0(
15
)

Serving Merrimack, NH and surrounding areas

Approved

In business since 2025

Free estimates

Small jobs welcome

"I have had 2 jobs done by Justin. One large ceiling repair and one wall installed. Both were done quickly with a flawless finished result. I am very happy to recommend him."
Garage
Kitchen
Kitchen
Golf simulator room
Garage man cave

+10

Response time2 hrs
Response rate100%
6 neighbors recently requested a quote
Avatar for New England Home Pros
New England Home Pros
5.0(
14
)

Serving Merrimack, NH and surrounding areas

Approved

In business since 1988

Free estimates

Small jobs welcome

"NEW ENGLAND HOME PROS has remodeled 3 of our bathrooms and done the tile work in our kitchen... each time, they have exceeded our expectations! Each of the projects were finished on time, on budget and we were thrilled with the results."
Response time2 days
9 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for Green Nature Homes
Green Nature Homes
5.0(
22
)

Serving Merrimack, NH and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Excellent communication, timeliness and competency on our main bath renovation. Very happy with the result and will definitely be using this company again for our future projects. Their subcontractors were equally great."
Master Bath
Main floor bathroom
Main floor bathroom
Small space but still one of my favorites
Drywall for addition

+9

Response time2 days
Response rate92%
2 neighbors recently requested a quote
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FAQs for basement remodeling projects in Merrimack, NH

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 Merrimack, NH homeowners’ guide to basement remodelings

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