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Find Basement remodelers in Wilmington

Avatar for Owens Corning Basement Finishing System
Owens Corning Basement Finishing System
4.8(
535
)

Serving Wilmington, DE and surrounding areas

Approved

Super Service Award Winner

In business since 1990

Free estimates

Warranties offered

"We love our basement remodel. Peter, Alex and his team were here when they said theyâ d be here, completed the job as described, and kept us updated along the way. The basement now looks and feels clean and bright. The additional space doesnâ t feel like a basement at all and is enjoyed by the whole family. We highly recommend Lux Renovations."
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+40

Response time1 day
Response rate98%
197 neighbors recently requested a quote
Avatar for Quality 1st Basement Systems, Inc
Quality 1st Basement Systems, Inc
4.7(
176
)

Serving Wilmington, DE and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"my whole home feels fantastic. very courteous and knowledgeable individuals. I would hire them again for all my basement waterproofing and basement remodeling needs in the future. Its hard to find a family run business with amazing values and professionalism. these guys have it all."
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+129

Response time10 hrs
Response rate99%
3 neighbors recently requested a quote
Avatar for Martin's Home Improvement
Martin's Home Improvement
4.9(
79
)

Serving Wilmington, DE and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"We finally found the right contractor! We had 3 projects involving the basement, Master bath and front porch. Martin and his team are very skilled. The work is high quality, efficient and done correctly. Estimates are provided in writing in advance of the job. Martin is often onsite - either doing the work himself or supervising and guiding his team. He communicates well and often and he stands behind his work. We had a small issue in the Master Bath with the painting on the ceiling. He came immediately to inspect it, figured out the issue and had his team redo the ceiling paint. It's now perfect. He is also strategic in making suggestions and giving creative ideas on how to approach the job in ways we had not thought of ourselves. I highly recommend Martin's Home Improvements."
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+57

Response time1 day
8 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for ReImagine Renovation LLC
ReImagine Renovation LLC
5.0(
6
)

Serving Wilmington, DE and surrounding areas

Approved

In business since 2024

Free estimates

Warranties offered

"We decided to demo and redo our entire house. It involved taking down walls, drywall work, flooring, etc. Everything was finished beautifully and completed in a timely manner. Highly recommend for any interior home improvement projects. "
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1 neighbors recently requested a quote
Avatar for H&Y Contracting LLC
H&Y Contracting LLC
4.9(
15
)

Serving Wilmington, DE and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

"I hired H&Y Contracting LLC to remodel my kitchen and the results were tremendous, there work ethic was professional and efficient. well recommended."
Living Room Remodel
Living Room Remodel
Bathroom
Kitchen remodel
Kitchen

+75

Response time10 hrs
Response rate93%
14 neighbors recently requested a quote
Avatar for Groundworks
Groundworks
4.6(
393
)

Serving Wilmington, DE and surrounding areas

Approved (Corporate)

In business since 1997

Free estimates

Warranties offered

"BQ did an excellent job of waterproofing our basement last year. The men were fast and efficient and did an excellent job, This year they inspected the basement and everything was fine. Thank you for a job well done. D. Roush"
Protect Your Crawl Space
Protect Your Crawl Space
Protect Your Crawl Space
Correct Your Smelly Crawl Space
Protect Your Crawl Space

+16

570 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for All Angles
All Angles
4.7(
12
)

Serving Wilmington, DE and surrounding areas

Approved

In business since 1997

Free estimates

Warranties offered

"Omar knows everything about all aspects of remodeling! He certainly goes above and beyond to make sure everything is done right and saves you tremendous amounts of money! I would and I have recommended him over and over to friends and family! Tremendously trustworthy!!"
Old bathroom
Prep for Tile work
Finished Bathroom
Tub surround Finish
Work in Progress

+26

Response time3 hrs
Response rate100%
Recommended by75%of homeowners
Avatar for R.A BARKER
R.A BARKER
5.0(
17
)

Serving Wilmington, DE and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

R a Barker general contractor home remodeling. We offer everything from the ground up foundations, concrete, framing, siding, roofing, windows all interior work drywall, painting, trim, full kitchens, bathrooms additions to small handyman services. We want to provide quality services at a fair prices we sell products and services that home owners want or need nothing they dont. We have been servicing the area for more then 19 years owner operated small business

Finished basement
Finished
Basement Remodeling
Bathroom Remodel
New plywood

+113

2 neighbors recently requested a quote
Recommended by64%of homeowners
Avatar for Big Bad Wolf Construction Company, LLC
Big Bad Wolf Construction Company, LLC
4.4(
26
)

Serving Wilmington, DE and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"I was very hesitant to hire a contractor to finish my basement. Now that it is completed, I am very happy I selected John over the many others interviewed. The basement is beautiful and exactly as we had discussed prior to starting the project. He was very flexible with minor changes and completed quality work. I will contact John again should I have any additional home improvement needs. Nice work John!"
Whole House Renovation an
Whole House Renovation an
Whole House Renovation an
Whole House Renovation an
Whole House Renovation an

+171

Response time2 days
Recommended by92%of homeowners
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FAQs for basement remodeling projects in Wilmington, DE

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 Wilmington, DE homeowners’ guide to basement remodelings

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