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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon64
    Verified basement remodels reviews

Top-Rated Basement remodelers in Newtown - Updated Nov 2026

Avatar for Connecticut Basement Systems, Inc.
Connecticut Basement Systems, Inc.
4.3(
589
)
Basement - Remodel

Serving Newtown, 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

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

Serving Newtown, 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 K & X Services, LLC
K & X Services, LLC
4.9(
62
)
Basement - Remodel

Serving Newtown, CT and surrounding areas

Approved

In business since 2017

Free estimates

Small jobs welcome

"I've got a 112 year old hose that is pretty solid, but it had a cracked floor joist and part of the flooring wasn't properly supported. I hired Kristian and his team to install a couple of lally columns to support a carrying beam and sister a couple of floor joists. Many contractors wouldn't even return my call because I wasn't looking to complete a huge remodel job, but Kristian came over, gave me a fair verbal estimate on the spot, and worked with me on timing to complete the project. Not only that, but the solution wasn't overly complicated. The job was straightforward, completed exactly as described in the time described, and there was no scope creep. If I ever have a larger need, they'll certainly be my first call. I would highly recommend K&X construction if you need any services that they offer."
Basement remodel
Addition
Porch enclosure
Response time2 days
Response rate88%
Recommended by95%of homeowners
Avatar for Plow and Property Projects, LLC
Plow and Property Projects, LLC
4.3(
84
)
Basement - Remodel

Serving Newtown, CT and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

"I called them and left a message about what I needed done. I received a call from them the same day. They were Abel to come the second day. The job of installing a gable vent on my house was done in less than 2 hours. I will definitely use them for my next project."
Response time2 days
16 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for TimberWolf Contracting LLC.
TimberWolf Contracting LLC.
4.2(
55
)
Basement - Remodel

Serving Newtown, CT and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

"I’m very pleased with the service and work I received from Timber Wolf contractors and his crew. He contacted me and arranged a time to look at the work I needed done. He promptly sent me a quote. He set up a time between our schedules to build my spiral staircase and replace a window with a vent. He arrived on time and completed the job beyond my satisfacon. I was so pleased with the results and communication I received, that I hired them to come to my other home to install "Flooring for my sunroom, pantry and hallway. They also painted trim and upgraded my hardware on my kitchen cabinets. I felt very comfortable with Timber and left him a key so I could go to work. I highly recommend Timber Wolf contractors for your home projects, they are professional, polite and hardworking. Respectfully, A. Saint"
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+16

Response rate100%
1 neighbors recently requested a quote
Recommended by88%of homeowners
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Basement Remodel FAQs, answered by experts

Yes, most general contractors require an initial down payment, typically between 10% and 25% of the total project cost. This upfront payment helps cover the costs of materials, permits, and subcontractors. The remaining project costs are usually billed after specific project milestones are reached or on set completion dates, as outlined in your contract. Be wary of contractors who require a significant deposit of 50% or more upfront, as this could be a red flag for a scam.

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. 

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.

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.

The average cost to remodel a basement is between $12,100 and $33,400. Depending on the project's complexity, the price can be as low as $3,500 or exceed $50,200. For a simple project like adding a home office, you might spend between $500 and $3,000. However, a more extensive project, such as adding a bathroom, can range from $6,600 to $16,500. The final cost is influenced by factors like the basement's size and condition, the type of remodel, material choices, your location, and accessibility. For an accurate price, it's best to consult with a basement remodeling team.

The Newtown, CT homeowners’ guide to basement remodels

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