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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon52
    Verified basement remodels reviews

Find Basement remodelers in Cos Cob

Avatar for Connecticut Basement Systems, Inc.
Connecticut Basement Systems, Inc.
4.3(
397
)
Basement - Remodel

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"Very well done job! Service technicians were knowledgeable and professional, thorough and efficient, kind and polite. I highly recommend the company for basement service."
Additional Photos
Additional Photos
Additional Photos
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Additional Photos

+12

63 neighbors recently requested a quote
Recommended by91%of homeowners
Hill Top Remodeling, LLC
4.6(
36
)
Basement - Remodel

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"We interviewed four companies for our project. Hilltop Remodeling wasn't the most expensive or the least expensive. Bill, the owner, is very personable and we liked him right off. He and his crew are very professional and completed the job in a timely manner. They removed a tub in our sons' bathroom. They expanded, built, plumbed, and tiled a new shower stall. Hilltop also re-grouted our tile and painted the bathroom and our son's bedroom. We are very happy with the results and would rehire Hilltop Remodeling again."
Response time2 days
Response rate91%
21 neighbors recently requested a quote
Avatar for A2Z Contractors, LLC
A2Z Contractors, LLC
4.6(
133
)
Basement - Remodel

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"After a large water leak in the upstairs kitchen, Weslyn and his team did an amazing job repairing my kitchen cabinets, wood floors, installing a new window, back splash and recessed lights. In the basement, all the walls were repaired, new trim was added, everything was painted, and recessed lights were also added. The largest part of the job however was the newly renovated bathroom. A beautiful new shower system, glass door, recessed lights, double sink vanity, new exhaust with Bluetooth (for music in the shower), and gorgeous tiles were added and the end result was just amazing! The crew were friendly, cleaned up after themselves and did an awesome job. Very respectful and just nice guys. After the renovation I had an issue with my sump pump and Weslyn immediately had a worker come to my house and repair. I would 100% recommend A2Z!"
bathroom
bathroom
bathroom
bathroom
bathroom

+5

Response time2 days
46 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Lasting Strength
Lasting Strength
5.0(
46
)
Basement - Remodel

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1994

Free estimates

Customers say: Quick response

"We used Lasting Strength to perform a major renovation on a 1950's basement living/bathroom area. The project was literally a complete tear down and start back over. Adam & his team of professionals were attentive to all details, such as plumbing/electrical and accommodating daily life needs. They worked around our schedules and also accommodated the management of the project via the use of technology (FaceTime, text, email), which allowed for quick decision making and allowed us to view items as they were found. From the plumbers, Sheetrock, painting, and electrical - the final product is exemplary!"
tv cabinet built in
shower
wine cellar
built in
pergola

+116

Response time4 days
Response rate100%
8 neighbors recently requested a quote
Avatar for HammerTime Construction Group
HammerTime Construction Group
5.0(
10
)
Basement - Remodel

Serving Cos Cob, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Free estimates

Emergency services offered

"There are not enough great things I can share about HammerTime Construction, and every single member of their team. From consultation to project completion, the high level of professionalism, expertise, SKILL, attention to detail, and superior craftsmanship was exemplary! We contacted William via Angi (blindly!) in hopes of helping my elderly parents restore their kitchen, and he agreed to come by that same day - a weekend- to do an assessment, and provide a quote. He assured us he'd work within our budget, and he stuck to his word. We were in constant contact for everything from project concept to contract to which materials we'd be selecting. Our expectations were surpassed 10-fold!! Hire them. Just look at the photos! Our parents' home was completely transformed in the best possible way. It will now be a source of pride and an enjoyable gathering space for all who visit. On top of the kitchen remodel, they also restored our hardwood floors to a beautiful state we didn't even know was possible. Miguel, Ignacio and the entire team were speedy, efficient and completely caring as though this were their own family's home. We will be returning to this company for future projects, and we recommend them with zero hesitation!!"
This was a larger bathroom with two accent walls, a tub and sauna shower with jetted shower heads, a custom-cut ceiling, heated pebble flooring, and a mini wooden walkway.
The client wanted a tub sitting on pebble stones with an accent wall, wooden look custom shelving, and a smart floating toilet.
The image showcases a contemporary stand-up shower featuring frameless glass doors that provide a seamless, open look. The interior is adorned with large marble tiles in a soft, neutral tone, giving the shower a luxurious feel.

Built-in niches provide stylish and practical storage for toiletries, while subtle LED lighting enhances the overall ambiance.
Remodeling - General Project
Fireplace Renovation

+41

30 neighbors recently requested a quote
Recommended by70%of homeowners
Avatar for Jermaine C Home Improvement, LLC
Jermaine C Home Improvement, LLC
4.7(
26
)
Basement - Remodel

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Jermaine C Home Improvement LLC did an excellent job on a very long list of repairs and improvements including replacing damaged drywall ceilings, installing a butcher block countertop, rebuilding the side of a porch due to rotted wood, installing a new floor and trim. Overall I found the company to be reliable, honest, skilled at all aspects of home improvements, goes above and beyond and the prices very reasonable compared to other handyman companies I called. I highly recommend Jermaine C Home Improvement LLC, he definitely gets it right the first time."
Old Kitchen
Before repair
Cement board installation
Old roof ripped off and being prepared for new material
Repaired Old Deck

+17

Response time8 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for Pella Home Improvement
Pella Home Improvement
4.0(
35
)
Basement - Remodel

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

"Customer Service was by far above expectations. I felt my basement was as important to Pella as it was to me. Also, we were given great recommendations throughout the process. Quality of the work was very good. Only area for improvement was that the upfront estimate had a couple minor misses, and I would have liked the laminate planks to have been laid with 3-4 row repeating pattern rather than a 2 row; but I never made that expectation known upfront. Overall an excellent experience and I highly recommend!"
Bathroom Remodeling
Bathroom Remodeling
Bathroom Remodeling
Bathroom Remodeling
Bathroom Remodeling

+13

Response time2 days
Response rate100%
4 neighbors recently requested a quote
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Basement Remodel questions, answered by experts

Walkout basements cost more than other kinds of basements, and can also increase your risk of leaks as well as a loss of insulation, leading to higher heating and cooling costs. Improperly installed walkout basements may lead to structural issues with your foundation, so ensure you’re working with a contractor who has extensive experience with this kind of basement.

Renovations that add functionality or more comfortable floor space generally add the most value when remodeling your home. Attic or basement finishing can add floor space without altering the home's structure, saving you renovation money while adding valuable space. Smaller improvements, such as installing smart-home components or replacing entry doors and windows, also experience high ROIs. 

Making a window in a basement larger costs an average of $4,200. You’ll need to pay an average of $550 to have a structural engineer plan the project, $500 to $1,500 for the installation labor, and an average of $2,200 for the excavation and window well installation. The remainder will go toward pulling permits, installing trim, and repairing drywall on the interior.

Joists and beams are both part of the flooring system above your basement, with the beams spanning the length of your home and getting support from vertical posts underneath, and joists usually spanning half the width of your home with no support posts underneath. The floor joists provide even support to the subflooring and flooring above, and they distribute that load to the beams. The beams then distribute that load down through the support posts to the foundation.

Yes, you can add a bathroom to an unfinished basement, but you’ll want to take proper precautions if doing so. As with any bathroom addition, you’ll need to make sure that it’s approved by local building authorities first. With unfinished basements, you especially need to keep an eye on proper ventilation practices.

The Cos Cob, CT homeowners’ guide to basement remodels

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