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Find Basement remodelers in Cos Cob

Avatar for Design By Day, LLC
Design By Day, LLC
4.38(
8
)

Angi Approved

In business since 2010

Free estimates

Customers say: Quality work

"Eva is a true a professional, very thorough and helped us navigate through the covid process. She went through every point of the project with us prior to starting and updated us daily when she stopped in to check on progress and quality of the crew. She was very involved with all the details of the project and nothing was too small for her to discuss with us. From the start of our kitchen and bath remodel, she saw it through to a beautiful completion. Having worked with Eva on past projects such as our basement remodel, we highly recommend Eva and her crew; she is a pleasure to work with and a true professional."
Recommended by87%of homeowners
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Avatar for 203 Building & Remodeling
203 Building & Remodeling
5.00(
20
)

Angi Approved

In business since 1991

Free estimates

Emergency services offered

"FJS was hired after a comparison of the quality of his work compared to reasonable pricing. Timeliness was never a problem in that his crew showed up every morning and the project was never delayed . Quotes were all written and unforeseen work was handled in a professional way They will be my first call on future projects"
Recommended by55%of homeowners
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Avatar for Vulcan Basement Waterproofing & Flooring, Inc.
Vulcan Basement Waterproofing & Flooring, Inc.
3.71(
75
)

Angi Approved

In business since 1947

Free estimates

Customers say: Quick response

"The crew was professional neat clean they explained everything to me and the work was what they said would be and quality work they're very reliable they were on time and very communicative about what the exactly were going to do excellent job if you thinking of doing basement work these are the guys excellent work"
25 neighbors recently requested a quote
Recommended by78%of homeowners
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Avatar for Dynamic Design & Remodeling
Dynamic Design & Remodeling
5.00(
12
)

Angi Approved

Super Service Award Winner

Free estimates

Emergency services offered

Customers say: Quick response

"Justin, Jessica, and the whole Dynamic team were exceptional from start to finish. After shopping around, they offered the best price for our wall repairs, communicated well throughout, and the final product was better than we could have hoped for. we will definitely be using them in the future!"
5 neighbors recently requested a quote
Recommended by91%of homeowners
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FAQs for basement remodeling projects in Cos Cob, CT

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 Cos Cob, CT homeowners’ guide to basement remodelings

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

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