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Find Basement remodelers in Darien

Avatar for Connecticut Basement Systems, Inc.
Connecticut Basement Systems, Inc.
4.5(
164
)

Serving Darien, CT and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"Great results from waterproofing. Turned my spring flooding anxiety to calm. As humidity rose in summer, I put in a small dehumidifier. Made basement noisy as it struggled to dry and produced a lot of heat. As temperatures rose to about 83 down there and the humidity rose to over 68%, I had same people put in a whole basement commercial-grade dehumidifier. The small unit dropped the humidity to around 50% in less than an hour. Incredible performance and have me peace of mind and peace and quiet downstairs. Temperature dropped gas as well. Weel worth the price to save my most expensive investment."
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+12

13 neighbors recently requested a quote
Recommended by84%of homeowners
Hill Top Remodeling, LLC
4.8(
27
)

Serving Darien, CT and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Bill came over and looked at my basement gave me a quote. I had 3 other quotes but not from Angie’s List. Bills was the best quote. He also noticed I had a water problem and my sub pump was not working correctly and he recommended Connecticut basement. I also contacted them. Thanks to Bill now I have a new basement and a lifetime warranty from Connecticut basement for my sub pump and water leak. If it wasn’t for Bill my basement would still have water problems."
Response time2 days
Response rate91%
7 neighbors recently requested a quote
Avatar for The Builders & Cleaners
The Builders & Cleaners
4.9(
95
)

Serving Darien, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"These guys were great! We got turned down by two large companies because our dryer vent was almost at the peak of our roof on the second floor, but these guys took it on. They came out the same day we spoke with them to take a look and draw up a quote and then came back the following day to do the cleaning on our dryer vent and put in a new vent on the house. The previous owners had on the wrong cover which caused most of our issues to begin with. I would recommend them to anyone we know. They were professional and explained out everything."
Dust out from the ductwork
Dust out from the ductwork
Clean vent
Clean vent
Dust in the return

+1777

Response time1 day
Response rate92%
Recommended by88%of homeowners
Avatar for Custom Pro Home Improvement LLC
Custom Pro Home Improvement LLC
5.0(
18
)

Serving Darien, CT and surrounding areas

Approved

In business since 2011

Free estimates

Credit card accepted

"Marcio was the general contractor for our bathroom remodel, hardwood floor installation. and interior painting/plaster repairs for a house in Eastchester, NY. He did an excellent job. His attention to detail was exemplary, and his communication skills are excellent. I was out of the state for most of the remodeling, and he was always quick to update me on progress with photos and e mails. He made smart suggestions about economical ways to deal with issues which arose during the remodel. I was so pleased with his work that I have used him for other smaller jobs."
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Complete Kitchen Remodeling White Plains NY

+25

Recommended by94%of homeowners
Avatar for HD Renovations
HD Renovations
4.9(
96
)

Serving Darien, CT and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Domenick is a professional craftsman. He kept to a tight schedule, always showed up on time and did a great job. He gave us creative ideas that would work in our space. Domenick and his team were pleasant to work with. From the moment they entered our home they worked a full day and showed up everyday. Domenick enjoys and takes pride in his work. We are extremely pleased with the final result. Our basement bathroom was transformed into an oasis with a spa feel. The main area in the basement and hallway leading to the basement was also transformed into a warm, welcoming living space. The work he performed in 3 weeks was: Build a new shower/tile with a design/create a shower bench/install shower panel/tile behind the vanity with the design trim/install the vanity/move plumbing, gas and electrical for the shower and vanity with light fixture/tile the floor/install a stackable washer and dryer/build out a wall to divide the storage area and heat unit/install a sliding barn door/paint the bathroom, main room and hallway up to the kitchen door/ installed 3 windows, an air conditioner and installed recessed lighting in the bathroom/installed interlocking vinyl flooring in the storage area, main room and stairs (repaired two broken stairs and lots of extras, e.g. installed a lighting fixture in the hallway by the stair landing, a make up/shaving mirror in the bathroom, installed window treatments and assembled a 70 inch TV storage cabinet). We have booked him for future projects. We highly recommend Domenick and his team."
Kitchen and Bath Remodeling Project
Bathroom renovation
Accessible shower two days
Complete demo of existing shower or bathtub area completed in two days.
Bathroom and kitchen remodel

+94

Response time1 day
2 neighbors recently requested a quote
Recommended by95%of homeowners
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FAQs for basement remodeling projects in Darien, 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 Darien, CT homeowners’ guide to basement remodelings

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