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Find Basement remodelers in Dover

Percival Remodeling LLC.
4.9(
99
)

Serving Dover, NH and surrounding areas

In business since 2009

Emergency services offered

"Reliable and trustworthy from the get-go! He actually promptly returns phone calls! Throughout the project, Kevin proved himself to be hard working and meticulous from start to finish! We have not one critical thing to say! He was punctual, efficient, so easy to work with and, did I already say hard-working??? His honesty and integrity set him apart from so many other contractors, in fact, he just called to say we had overpaid him by $100.00! Wow! My husband and I were very impressed by not only his work, but by his trust-worthy character and the pride he takes in his work. His assistant, Josh, was also a hard worker and showed such attention to detail - he was even careful not to destroy plants in my garden just below the window he was repairing! It was money well spent! We have already been singing Percival Remodeling's praises and referring him to others. We will hire him for all our future construction projects! Thank you so much, Kevin and Josh! We appreciate the excellent job!"
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+17

Recommended by98%of homeowners
Avatar for J. Lance LLC-Exterior & Interior Door Installation
J. Lance LLC-Exterior & Interior Door Installation
4.9(
36
)

Serving Dover, NH and surrounding areas

In business since 1997

Free estimates

"Very pleased with the work done by Jonathan Fiske. Jonathan delivered the door which we painted ourselves. When it was ready, Jonathan came out within a few days and installed the frame, door and moldings in one day. He also replaced the alarm sensor, made sure proper flashing was installed and took the old door away. He answered all questions that we had. It was a pleasure working with him and would recommend him to others."
www.j-lance.com/
www.j-lance.com/
www.j-lance.com/
Recommended by97%of homeowners
Avatar for Credible Construction
Credible Construction
5.0(
23
)

Serving Dover, NH and surrounding areas

In business since 2006

Free estimates

Warranties offered

"There have been few times that we have worked with contractors and been able to say that we were 100% satisfied but working with Shawn and his crew was definitely a 100% experience. Shawn had wonderful ideas, and he and his crew were definitely professional, punctual, and meticulous in carrying out the work on our bathroom. We already plan on having them come back to redo our other bathroom."
Recommended by100%of homeowners
Avatar for Northeast Remediation
Northeast Remediation
4.9(
23
)

Serving Dover, NH and surrounding areas

In business since 2012

Free estimates

Credit card accepted

"Northeast Remediation performed deleading on my home, involving replacement of windows and the garage door. The house passed re-inspection for full compliance as soon as they were finished. The only issue was that they had problems getting one of their suppliers to provide a custom sized replacement garage door in a timely manner. This delayed fully completing the job by about a month while they found a different supplier. However, they were generally very responsive with communication and the work quality was good so I would not hesitate to use them again."
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Recommended by95%of homeowners
Avatar for J. MARTINOLI & SONS BUILDING & REMODELING
J. MARTINOLI & SONS BUILDING & REMODELING
4.7(
30
)

Serving Dover, NH and surrounding areas

In business since 1932

Free estimates

Credit card accepted

"Jay and Jim recently completed a master bath renovation and guest bath renovation for us. They were tremendous to work with - from the beginning estimate through completion. Their transparency on status of project, answers to our questions...etc. was always appreciated and they were a great partner to work with. They were always responsive, professional, the estimate was reasonable and had great recommendations. I've already started the estimate process with Jay on our next project and look forward to working together in the near term - would highly recommend!"
Kitchen Remodel
Bathroom Remodel
Composite Deck
Recommended by93%of homeowners
PittPro Home Improvement
5.0(
5
)

Serving Dover, NH and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"Mark and his crew are the best to work with. They did a tremendous job from the first phone call to the last day of the project. Mark and his crew have unbelievable talents and all of his sub contractors were not only professional but very personable as well. I highly recommend Pitt Pro and would use them again. All around professional and good guys!"
Recommended by100%of homeowners
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FAQs for basement remodeling projects in Dover, 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 Dover, NH homeowners’ guide to basement remodelings

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