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Find Basement remodelers in Brookline

Avatar for Total Basement Finishing, a Blackdog Affiliate
Total Basement Finishing, a Blackdog Affiliate
5.00(
1
)

Angi Approved

In business since 1989

Free estimates

Warranties offered

Total Basement Finishing, A Blackdog Affiliate serves the Greater Lowell area of Massachusetts and New Hampshire with basement finishing and basement remodeling. Finishing your previously unused basement gives you additional space in your home and so much more. It offers you a rare opportunity to exploit your creative side through the design process. And ultimately, you will transform a dark, uninviting space into a room that adds value and comfort to your home, making it an integral part of your family’s daily life.

Avatar for Envy Homes, LLC
Envy Homes, LLC
4.75(
2
)

Angi Approved

In business since 2021

Warranties offered

Customers say: Terrific value

"They showed up on time each day, were very knowledgeable of the work they performed. Showed up for the quote when we scheduled the first meeting and we were very impressed with the overall experience. The deck they built was spot on and perfect for our needs. They did make some recommendations as to how it would look and work better for us and we went with their decisions and are so happy and impressed. They were very neat about their work and very easy to talk with. I would never use anyone else, and HIGHLY RECOMMEND them for whatever you need. So great to work with."
Recommended by100%of homeowners
Tim Gagnon Frame to Finish
4.92(
31
)

Angi Approved

In business since 2008

Free estimates

Customers say: Quick response

"I could not be happier with the job Tim and John did installing new windows. It was difficult to find someone to cut a hole in the side of my house as these were not replacements, but a new installation. The windows and trim match the existing windows. Couldn’t ask for a better experience and outcome., I can’t recommend Tim enough."
1 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Granite State Renovators, LLC
Granite State Renovators, LLC
4.75(
14
)

Angi Approved

In business since 2012

Free estimates

Customers say: Quality work

"We recently hired Granite State Renovators for a complete kitchen remodel, and we couldn?t be happier with the outcome. From the very beginning, the team was easy to work with?super responsive, organized, and genuinely invested in making sure we got exactly what we wanted. The quality of the work is top-notch, and every detail was done with care. Our new kitchen is absolutely beautiful and feels like it should be in a magazine. It?s not just a kitchen anymore?it?s the heart of our home. They finished on time, stuck to the budget, and made the whole process way less stressful than we expected. Highly recommend them to anyone looking to do a major renovation."
4 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Owens Corning Basement Finishing System
Owens Corning Basement Finishing System
4.83(
342
)

Angi Approved

Super Service Award Winner

In business since 1990

Free estimates

Customers say: True professional

"Very good experience, they handled all permits and kept me updated every step of the way. Always arrived on time, very professional, amazing craftsmanship and when they were done they left a perfectly clean area. Would definitely recommend"
130 neighbors recently requested a quote
Recommended by78%of homeowners
Avatar for Boston Contractor Pro
Boston Contractor Pro
New to Angi

Angi Approved

In business since 2021

Free estimates

Boston Contractor Pro 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.

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FAQs for basement remodeling projects in Brookline, 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 Brookline, NH homeowners’ guide to basement remodelings

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