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Find Basement remodelers in Portsmouth

Avatar for Clear Choice Home Improvements, LLC
Clear Choice Home Improvements, LLC
4.8(
750
)

Serving Portsmouth, RI and surrounding areas

Angi Approved

In business since 2004

Free estimates

Credit card accepted

"Watch out, different employees have us very different estimates. One was honest and one tried to way overprice our roofing project. Also during the installation they tried to skip replacing plywood as we’d agreed upon without discussing with us first. Luckily my husband was home and caught the mistake. There were definitely some good things too, the knowledge and quality of materials was excellent. They got our entire project done in one day and worked very hard."
Exterior 1
Exterior 2
Exterior 3
Exterior 4
Roof 1

+132

Recommended by92%of homeowners
Avatar for Custom Construction Services LLC
Custom Construction Services LLC
5.0(
20
)

Serving Portsmouth, RI and surrounding areas

Angi Approved

In business since 2010

Free estimates

Emergency services offered

"We recently hired Custom Construction Services LLC for an interior painting project in my home, including painting our kitchen island cabinets, and installing 2 doors and an attic vent. We couldn’t be more pleased with the results! From start to finish, the experience was outstanding. Derek took time to go over our plans, provided us with sound advice when needed, and sent estimates promptly. He was in constant communication throughout the whole process. Derek accommodated our last-minute requests, adjusted our quotes, and promptly addressed our questions or concerns over the phone. Derek’s team was incredibly professional and punctual, arriving exactly when they said they would. They took great care to protect my floors, ensuring that everything was covered and safe from any paint splatters. Their attention to detail was impeccable; every wall (including ceiling and trim in some rooms) and cabinet was painted with precision, leaving no streaks or missed spots. Clean-up was thorough, leaving my home spotless and the walls, especially our kitchen island cabinets, looking absolutely stunning. The final result exceeded my expectations. If you’re looking for top-notch interior painting services, I highly recommend Custom Construction LLC. Their expertise, professionalism, and dedication to customer satisfaction truly set them apart. Thank you, Derek and team, for transforming my home with such beautiful results! We’re sure to hire them again for our next project."
Home Addition
Bathroom Remodel
Bathroom remodel
Exterior House Paint Project
New Deck Build

+245

Response time12 hrs
9 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Cedar Coast Construction, Inc.
Cedar Coast Construction, Inc.
5.0(
19
)

Serving Portsmouth, RI and surrounding areas

Angi Approved

In business since 2000

Free estimates

Credit card accepted

"We hired Jeff, Nick and the Cedar Coast team to build a new portico over our front door, reinforce/weatherproof the existing door and door frame, and install new railings on our front steps and landing. They did incredible work. They took the drawings from the architect and improved upon them in the field. Jeff was super responsive throughout the process and allowed us to make revisions/additions along the way, all while keeping us within our budget. Nick's expert craftsmanship made the finished product look even better than the drawings. They completed the job on time and on budget, and there were no surprises! I highly recommend Cedar Coast for any large scale construction project or home renovation. I'll definitely be calling them again for future projects!"
Burien Deck
Burien Deck
Burien Deck
Burien Deck
Burien Deck

+104

Response time2 days
8 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Owens Corning Basement Finishing System
Owens Corning Basement Finishing System
4.8(
347
)

Serving Portsmouth, RI and surrounding areas

Angi Approved

Super Service Award Winner

In business since 1990

Free estimates

Credit card accepted

"Our existing Owens Corning wall panels had been damaged in a basement flood. Although the framework and panels had changed since our initial install some 20 years ago, they custom made new panels that fit perfectly. Additionally, they replaced interior doors and repaired drywall. The work was done on our schedule and done to our satisfaction. Their customer service was great. They came back out to adjust a door that wasn't closing perfectly."
Media Room Before
Media Room After
Games Room Before
Games Room After
Living Room Before

+81

Response time11 hrs
272 neighbors recently requested a quote
Recommended by76%of homeowners
Avatar for JCS Remodeling
JCS Remodeling
5.0(
15
)

Serving Portsmouth, RI and surrounding areas

Angi Approved

In business since 2011

Free estimates

Warranties offered

" We hired JCS Remodeling to do our bathroom/bedroom renovation. Jeff and his team were AMAZING! Start to finish the project was perfect, we could not be happier with how it turned out. Jeff and his team worked with respect and professionalism across the board. They truly cared for our home and the project and had no problem giving their opinions when I asked for them. We have an older home with only one full bathroom on the main floor and no “master suite” so we wanted to completely change the layout of our house. When Jeff and his partner Chris came to quote us on the project I was immediately sold. They had so much vision! At every point of the conversation they listened to what we wanted and spent so much time bouncing ideas with us. It seemed like they were just as excited about the project as we were and I was sold! Angi’s won’t let me post the entire review, but it is also posted on google if you want to read all the good things about JCS!!!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+91

5 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Scott's Handy Services
Scott's Handy Services
5.0(
19
)

Serving Portsmouth, RI and surrounding areas

Angi Approved

In business since 1989

Free estimates

Emergency services offered

"Truly one of the best experiences we have ever had with home handyman services. Scott came by and scoped out the job expertly and listening carefully to our needs. He is amazingly knowledgeable and offered wonderful suggestions about our overall needs as well as the specific job we contacted him about. His colleague, Matt, followed up and actually did the work. He is a remarkable technician, understanding exactly what we needed (in this case cabinet remodeling and replacement) and followed up ensuring that the work was precise and not only met our requirements but also ended up looing better than we had expected. He is meticulous in his work, but also highly sensitive to ensuring that everything he does leaves the area cleaner than when he began. He gave us excellent suggestions on other work we were exploring. Scott and Matt are really wonderful people. I followed up with Scott with questions, and he said we are his customer now -- feels like being part of his family!"
Storm door replacement
Custom built in bookshelves
Raynham Jacuzzi Deck
Installed attic pulldown staircase
Patio Swing Mount

+84

Response time1 day
Response rate89%
6 neighbors recently requested a quote
Avatar for Oakley Construction
Oakley Construction
4.8(
30
)

Serving Portsmouth, RI and surrounding areas

Angi Approved

In business since 2016

Free estimates

Customers say: Quality work

"Preston did the work immediately and we were happy with the job he did. I asked him for an invoice and he sent it, but would only accept cash directly to him using the Cash app. I tried to see if he would accept Zelle or credit card or a debit card but he insisted on cash. I had to open a new app and give them my details. When it took longer than expected, he texted me several times, and I made arrangements to give him., cash in person. At that point the Cash app paid him. The whole thing seemed very unprofessional to me."
Oakley Construction 2016
Oakley Construction 2016
Oakley Construction 2016
Oakley Construction 2016
Oakley Construction 2016

+261

Response time2 days
5 neighbors recently requested a quote
Recommended by96%of homeowners
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FAQs for basement remodeling projects in Portsmouth, RI

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 Portsmouth, RI homeowners’ guide to basement remodelings

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