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Find Basement remodelers in Darien

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

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."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+12

19 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for The Builders & Cleaners
The Builders & Cleaners
4.9(
119
)

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

+1784

Response time1 day
Response rate92%
Recommended by88%of homeowners
Hill Top Remodeling, LLC
4.6(
35
)

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%
8 neighbors recently requested a quote
Avatar for Pella Home Improvement
Pella Home Improvement
4.0(
35
)

Serving Darien, 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
Avatar for HammerTime Construction Group
HammerTime Construction Group
5.0(
9
)

Serving Darien, 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

18 neighbors recently requested a quote
Recommended by77%of homeowners
Avatar for Lasting Strength
Lasting Strength
5.0(
46
)

Serving Darien, 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 time3 days
Response rate89%
2 neighbors recently requested a quote
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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.