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TRUSTED BY COS COB, CT HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon53
    Verified basement remodels reviews

Find Basement remodelers in Cos Cob

Avatar for Connecticut Basement Systems, Inc.
Connecticut Basement Systems, Inc.
4.3(
589
)
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."
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+12

158 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Emerald Construction LLC
Emerald Construction LLC
4.9(
44
)
Basement - Remodel

Serving Cos Cob, CT and surrounding areas

Approved

Free estimates

Credit card accepted

Offers commercial services

Emerald Construction LLC is a professional company specializing in construction and renovation for residential and commercial clients. Our experienced team of contractors, designers, and project managers focuses on new construction, remodeling, and property improvements, ensuring top-notch craftsmanship and customer satisfaction. We provide services such as custom home building, kitchen and bathroom renovations, commercial build-outs, and exterior improvements like roofing, siding, and landscaping. We are known for our attention to detail, premium materials, and timely, budget-friendly project completion. With a client-focused approach, we collaborate with homeowners, business owners, and developers to realize their visions. Whether you need a complete property transformation or a simple upgrade, Emerald Construction LLC offers reliable, efficient, and innovative solutions tailored to your needs.

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+6

1 neighbors recently requested a quote
Recommended by95%of homeowners
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

"I did lots of research on contractors for my bathroom remodel and took a chance with A2Z and Im very happy i found them! Communication and follow up was high level from what i was accustomed to. Work was quick and quality."
bathroom
bathroom
bathroom
bathroom
bathroom

+5

Response time2 days
34 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%
5 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

"We recently had a complete kitchen renovation and main floor remodel done at my parents' home, and I can’t express how pleased we are with the results. From the very start, William and Miguel made the entire process a dream. William was simply exceptional to work with. He went above and beyond to make sure we were happy every step of the way. Not only was he incredibly helpful, professional, and available at all times, but he also took the time to accompany us to the store to help select the best products, tiling, and appliances—all while keeping us within budget. His advice was spot-on, and his eye for detail was invaluable. Throughout the project, he provided regular updates and checked in frequently to ensure we were comfortable with the progress. One of the biggest challenges was navigating the different perspectives of not only my parents but also myself and my three sisters, all of whom were involved in the decision-making. William handled it all with patience, diplomacy, and a calming presence, making sure everyone was heard and at ease. His guidance was steady and reassuring as he led us through the process with a professionalism that truly impressed us. William has clearly put in the effort to build a top-notch team. He surrounds himself with respectful, hardworking individuals who value trust, honesty, and family as much as he does. It's clear that he genuinely cares about creating bonds with his clients and helping them transform their homes—and their lives. Miguel, the man behind the magic, went above and beyond at every turn. His craftsmanship is excellent—truly top-notch. He was kind, dedicated, and worked tirelessly to get things just right. He arrived early, stayed late, and even came on Saturdays. Despite the language barrier, he used Google Translate skillfully to ensure we were always on the same page. Throughout the project, he kept us informed and even handled extra fixes at no additional cost. It was clear he took great pride in his work, and his attention to detail showed in every aspect of the renovation. By the end, we genuinely felt like we had made new friends in William and Miguel. They did a fantastic job bringing our 1930s house—never before renovated—into a modern and beautiful state. They tackled everything from a complete kitchen demo down to the framing: new insulation, ceilings, floors, walls, appliances, cabinets, a partial wall removal to make room for a gorgeous kitchen island with pendant lighting, and the meticulous restoration of the original hardwood floors. They even went above and beyond after the project was finished, coming back to help us set up exterior security cameras. Their recommendations were spot-on, and they always had an eye for aesthetics while staying within our budget. We couldn't be happier with the transformation they've achieved, and I wholeheartedly recommend them to anyone considering a home renovation. Thank you, William and Miguel, for your hard work, kindness, and professionalism. You made what could have been a stressful project a truly enjoyable experience."
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

32 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%
6 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%
9 neighbors recently requested a quote
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Showing 1-10 of 391
Basement Remodel questions, answered by experts

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.

There are several small, inexpensive upgrades you can make to upgrade your basement. Although you still need to adhere to building codes and obtain permits when necessary, you can complete small but mighty tasks like painting the masonry walls and installing entertainment devices to make the space more usable. 

It is generally more affordable to finish a basement than an attic, though it ultimately depends on how you plan to use the space. The average cost to finish a basement ranges from $7 to $23 per square foot, while attic renovation costs $30 to $60 per square foot. However, a simple attic conversion to a storage space will cost significantly less.

Efficient appliance positioning, optimizing existing plumbing, and sourcing energy-efficient materials reduce financial impact and increase sustainability.

Any bowing in a basement wall indicates a problem that needs to be addressed by a professional. If your basement wall bows more than 1 inch, it's time for an inspection. Generally, a wall can bow up to 30% of its thickness (around 2.5 inches for an 8-inch-thick wall) before it becomes an urgent situation. Bowing of 2 to 4 inches is more straightforward to fix than bowing of more than 4 inches, which will require significant repairs. If the bowing is more than 6 inches, the wall will likely need to be replaced. The sooner you address the problem, the easier and less expensive the repair will be.

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.