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Find Basement remodelers in Portsmouth

Avatar for JCS Remodeling LLC
JCS Remodeling LLC
5.0(
15
)
Basement - Remodel

Serving Portsmouth, RI and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"Jcs remodeling did a fantastic job on my bathroom I love their work.they worked really hard to bring out my vision and they exceeded all of my expectations. I will definitely recommend jcs remodeling for any home remodeling and will be using them for future projects."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+91

5 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for DC57 Construction
DC57 Construction
5.0(
68
)
Basement - Remodel

Serving Portsmouth, RI and surrounding areas

Approved

Super Service Award Winner

Emergency services offered

Customers say: True professional

"As all the previous reviewers have said, DC 57 Construction is definitely a 5 star company. Lucas came to my home 3 times and helped me plan out the job. The job included: rebuilding a wood ladder to the upstairs loft, installing a railing and a new door in the loft, and adding shelves in the bathrooms. In addition, Lucas installed two railings for my back deck. Lucas and Tiago are both finish carpenters and they do excellent work at a very reasonable price. I am having Lucas come back soon to install a new screen door. Hiring Lucas and Tiago was definitely a great decision as my home looks much better."
Finished Carpentry and Woodworking Project
Finished Carpentry and Woodworking Project
Finished Carpentry and Woodworking Project
Finished Carpentry and Woodworking Project
Finished Carpentry and Woodworking Project

+27

Response time1 day
1 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for RAM Builder Services LLC
RAM Builder Services LLC
4.9(
24
)
Basement - Remodel

Serving Portsmouth, RI and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

RAM Builder Services, LLC is an owner-operated Rhode Island contractor specializing in basement remodeling, framing, drywall, and interior carpentry with a focus on code compliance and structural soundness.\n\n**Basement Remodels: $20,000 minimum; most require permit-ready city prints.\n**Process: Detailed walkthroughs, written estimates, and structured communication.\n**Contact: Call or text 401-309-4155.

Basement Bathroom
Theater Wall
Entertainment Center
Game Room
Below Stairs

+4

2 neighbors recently requested a quote
Recommended by68%of homeowners
Avatar for Ocean Break Remodel, LLC
Ocean Break Remodel, LLC
5.0(
19
)
Basement - Remodel

Serving Portsmouth, RI and surrounding areas

Approved

In business since 1999

Free estimates

Small jobs welcome

"Ocean Break Remodel started our renovations in the Fall of 2020. Peter and his crew tore down our existing front porch and steps and replaced it with a new construction with trex decking and vinyl railings and posts. Their work was outstanding. Later that Fall they removed our hot tub in our master bathroom and replaced it with a beautiful fully tiled walk in shower. It came out wonderful. They also put down waterproof vinyl flooring in both of our bathrooms. They installed backsplash on the two long walls of our kitchen. Each task - OUTSTANDING work. This past two weeks (June 2021), they painted our utility room, kitchen ad dining room, put new waterproof vinyl flooring in the kitchen and utility room. This past two weeks they also built us a new deck (20' x 25') of gray trex decking with white vinyl railings and posts. Our new deck is fantastic. We are more, more than totally satisfied with Peter of Ocean Break Construction/Remodel. I can not express enough for Peter and his crew. They are a pleasure to work with, they are very punctual, clean and hard working."
kitchen remodel
Framing an Addition
finished addition
exterior cedar shingling Little Compton RI
wooden shingles siding

+90

Response time1 day
Response rate88%
Recommended by94%of homeowners
Avatar for L2 Homes
L2 Homes
5.0(
15
)
Basement - Remodel

Serving Portsmouth, RI and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"NML Legacy was very responsive and quick to schedule. They prepared our space taking care of our belongings, completed the task start to finish and followed up to ensure we were pleased with the final result. Would recommend!"
Rubber Roof Install
Roof Replacement
Roof Replacement
Roof Replacement
Complete Home Renovation

+8

8 neighbors recently requested a quote
Avatar for Cedar Coast Construction, Inc.
Cedar Coast Construction, Inc.
5.0(
20
)
Basement - Remodel

Serving Portsmouth, RI and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"We worked with Jeff on this project and were very pleased with the results. He was a pleasure to work with, always came when he said he would. Communication was great! He would text if there were questions and was a very HARD worker!!! He even responded quickly to a small issue with the fence, and corrected it promptly. We will most certainly hire them again for any construction needs. Very Impressed!!"
Burien Deck
Burien Deck
Burien Deck
Burien Deck
Burien Deck

+104

Response time2 days
5 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Oakley Construction
Oakley Construction
4.5(
38
)
Basement - Remodel

Serving Portsmouth, RI and surrounding areas

Approved

In business since 2016

Free estimates

Customers say: Quality work

"The company did an excellent job finishing a basement with a bathroom. It did take them a lot longer than expected as they did not do well communicating with City Inspectors thus it took them a lot longer than expected."
Oakley Construction 2016
Oakley Construction 2016
Oakley Construction 2016
Oakley Construction 2016
Oakley Construction 2016

+261

Response time2 days
13 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Clear Choice Home Improvements, LLC
Clear Choice Home Improvements, LLC
4.5(
976
)
Basement - Remodel

Serving Portsmouth, RI and surrounding areas

Approved

In business since 2004

Free estimates

Credit card accepted

"I had a roof replacement and new leaf guard gutters installed. Both projects went smoothly . They started and finished on time, and their workmanship was great. The team of people that worked the project - the initial salesman visit, the contract, the office project manager, to the site install team where all professional and truly dedicated to insuring the work was acceptable to my standards. I highly recommend getting a quote from Clear Choice when planning home improvement projects."
Exterior 1
Exterior 2
Exterior 3
Exterior 4
Roof 1

+132

Recommended by92%of homeowners
Avatar for Affordable Constructions LLC
Affordable Constructions LLC
4.8(
12
)
Basement - Remodel

Serving Portsmouth, RI and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

Affordable Constructions LLC is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

Affordable Construction
Affordable Construction
Affordable Construction
Affordable Construction
Affordable Construction

+17

Response time11 hrs
Response rate97%
38 neighbors recently requested a quote
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Showing 1-10 of 189
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.