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Top-Rated Basement remodelers in Newton-junction - Updated Nov 2026

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

Serving Newton-junction, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1990

Free estimates

Warranties offered

"We had an outstanding experience with Owens Corning Basement Remodeling from start to finish. The entire team was phenomenal—professional, communicative, and truly dedicated to delivering high-quality work. One thing that really stood out was how quickly they got started. There was no unnecessary waiting, and they stayed on schedule the entire time, which made the whole process smooth and stress-free. A special shoutout to Carlos and Luis, who worked tirelessly on our basement. Their craftsmanship, attention to detail, and strong work ethic were obvious every single day. They took great pride in their work, and it absolutely shows in the finished result. We couldn’t be happier with how everything turned out. If you’re considering a basement remodel, I highly recommend Owens Corning—they exceeded our expectations in every way!"
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 Newton-junction, 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."
17 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Transformation Construction LLC
Transformation Construction LLC
4.9(
10
)
Basement - Remodel

Serving Newton-junction, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Credit card accepted

"Shawn and crew did a great job, had a few projects that needed to be done. Porch needed attention and after further inspection replacement was required project was completed in a few days. House was painted and trim & windows were replaced as needed, I'm very pleased with the workmanship and labor cost and won't hesitate to hire Transformation Construction LLC again."
Response time1 day
Response rate97%
1 neighbors recently requested a quote
Avatar for Handy and Some
Handy and Some
4.6(
35
)
Basement - Remodel

Serving Newton-junction, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Warranties offered

"This being our first experience with a contractor, we could not have been more happy with our selection. Sean and his team are professional, trustful, fair pricing, identified issues on the walk through, flexible to scheduling, friendly to Veterans and fast at their craft. We did an entire demo and remodeling of the bathroom, kitchen, flooring (bath, kitchen and hallway) as well as 6 foot wall gap and reinforcing support beam. Pricing was within budge and the contract was detail. Payment was made weekly with detail sub-billing, that made it easy to review work and mark progress. Continue communication made it easy to id issues, coordinate purchases of items and keep up with timeline. Sean even went out of his way to assist me when pipes froze during weekend that my husband was away on business which save potential damage to the home. We highly recommend Handy and Some, LLC for any project you have in mind and we will reach out to them on all of our future projects. I am wicked happy with my bathroom and kitchen. Thank you Sean, the team and Handy and Some, LLC"
Atkinson kitchen remodel
Atkinson kitchen remodel
Atkinson kitchen remodel
Atkinson kitchen remodel
Atkinson kitchen remodel

+139

Response time2 days
1 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Kelleher General Contracting
Kelleher General Contracting
4.8(
50
)
Basement - Remodel

Serving Newton-junction, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"This company and Mike are great!! They were able to quote and get us completed prior to winter, at a reasonable price. Very respectful of us and our cat and didnâ t leave anything behind! we have already noticed a difference because the heat kicked on only once last night!! insane what good work can do for your house- highly recommend!"
Response time1 day
Response rate92%
55 neighbors recently requested a quote
Avatar for DCL Construction
DCL Construction
5.0(
9
)
Basement - Remodel

Serving Newton-junction, 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 Martin Remodeling, LLC
Martin Remodeling, LLC
4.6(
8
)
Basement - Remodel

Serving Newton-junction, NH and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

With over 10 years of experience in the home improvement industry, we are the experts you need to take care of any of your residential needs. We will treat your home as we would treat our own. We look forward to working with you!

White oak great room
White oak great room
White oak great room
Tile kitchen
Tile kitchen

+8

Response time3 days
Recommended by100%of homeowners
Avatar for Magic Frog Carpentry & Woodworks
Magic Frog Carpentry & Woodworks
5.0(
11
)
Basement - Remodel

Serving Newton-junction, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Warranties offered

"We hired Adam to convert our single-car garage into a bonus room (framing, drywall, electrical, flooring, moved a gas line, rerouted the hose spigot, and replaced the garage door with a slider). The quality is fantastic. I’d recommend him to anyone. What really stood out: Adam cared about the details. I had a rough vision, but when we hit decisions I hadn’t thought through, he’d flag it and, if I didn’t have a strong preference, steer me toward the right choice. He had a real vision for how it should look, not just doing the bare minimum or blindly following directions. The other thing was how clean he and any of his crew kept their workspace. This didn't actually matter since they were in a garage we weren't using, but every day it was immaculate, and all the material scraps were removed. Hire Adam because he delivers excellent workmanship, sweats the details, and helps you make smart decisions along the way. Plus, he runs a clean, organized job site."
High Ceilings. Inside 45 degree angles done with NO-Coat 450
Tall Foyer. Wrapped beam. Unfinished at post.
Outside corners with bead. Outside 45 degree angles with No-Coat 450.
Deep Skylights with drywall returns.
Before

+11

Response time1 day
Response rate100%
12 neighbors recently requested a quote
Avatar for Top End Builders
Top End Builders
5.0(
5
)
Basement - Remodel

Serving Newton-junction, NH and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

50+ years Combined Exp At Top End Builders, We Specialize in all Residential Building and Remodeling such as, Garage Builds, Custom Deck Builds, Room Additions, Basement Remodeling and more.. We take pride in delivering exceptional craftsmanship, reliable service, and attention to detail on every job. Whether you're looking to expand your space, enhance your property, or bring a custom project to life, we're committed to providing quality results that last. Customer satisfaction is our priority, and we work hard to make every project a great experience from start to finish. Contact Top End Builders today to get started!

2 Story Garage Build
2 Story Garage Build
2 Story Garage Build
2 Story Garage Build
2 Story Garage Build

+79

13 neighbors recently requested a quote
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Showing 1-10 of 193
FAQs for basement remodeling projects in Newton-junction, 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 Newton-junction, NH homeowners’ guide to basement remodelings

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