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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon41
    Verified basement remodels reviews

Top-Rated Basement remodelers in Madison - Updated Nov 2026

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

Serving Madison, 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
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Additional Photos

+12

176 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Everything Under The Roof LLC
Everything Under The Roof LLC
4.8(
43
)
Basement - Remodel

Serving Madison, CT and surrounding areas

Approved

In business since 2006

Free estimates

Customers say: True professional

"Our small master bathroom was renovated by EUTR a few months ago. The planning and work went smoothly and the job was completed on time. The work area was kept clean at the end of each day. We saved a bit of money due to their ability to obtain comparable materials at a lower cost. We are very happy with the work done. Jay and Kim were great to work with. We would certainly consider hiring EUTR again for another home project."
hickory kitchen
master bath
Maple kitchen
double vanity
walk-in shower with bench

+4

Response time2 days
Response rate100%
4 neighbors recently requested a quote
Avatar for SRC Partners
SRC Partners
5.0(
6
)
Basement - Remodel

Serving Madison, CT and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

New Home & Remodeling Contractor with the staff and Knowledge to customize your home on time and on budget. Licensed and Insured since 2015 with over 25 years experience in the new construction business. Let our on staff design team build or remodel the home of your dreams!!

North Haven Addition
Before Picture
North Haven Addition
Pantry area complete
Before Picture

+3

Response time1 day
Recommended by100%of homeowners
Avatar for TimberWolf Contracting LLC.
TimberWolf Contracting LLC.
4.2(
55
)
Basement - Remodel

Serving Madison, 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"
Additional Photos
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Additional Photos

+16

Response rate100%
1 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for JFJ Construction
JFJ Construction
4.6(
71
)
Basement - Remodel

Serving Madison, CT and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I hired JFJ for a kitchen remodel. I m very very happy with how it turned out. They were clean, professional and overall great! Will hire them again for upcoming projects and I will also recommend to friends and family."
Bathroom tile
Bathroom Tile
Bathroom Tile
Bathroom Tile
Bathroom Tile

+226

Response time2 days
Recommended by96%of homeowners
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Basement Remodel FAQs, answered by experts

Adding an extension or addition to your home costs more than a loft conversion in all but the rarest cases where the home's structural integrity is lacking. Because a home addition requires a new foundation section or significant structural upgrades to handle a cantilevered portion, the cost compared to almost any loft conversion is significantly greater for the same square footage.

Unless you have extensive experience in construction work, remodeling a basement is best left to a professional. There are several tasks associated with this project that require exact precision, including:

  • Replacing insulation 

  • Replacing carpet or other flooring 

  • Adding heating and cooling

  • Adjusting or adding walls and doors

  • Altering or adding plumbing elements

If any of these elements is done incorrectly, it could severely impact the quality of your basement remodel and be dangerous. Changing a basement often comes with code safety requirements, like egress windows and proper ventilation. Therefore, leaving it up to a professional is often the best decision.

Yes, in most cases, finishing a basement is worth the cost. The project adds valuable, usable square footage to your home and typically provides a return on investment (ROI) of 70% to 75%. For example, an average basement refinishing project costing $32,000 could add between $22,400 and $24,000 to your property's value. The final value added depends on factors like your location, the quality of materials and workmanship, and the features you include, such as a living space, bedroom, or bathroom. To be officially counted in your home's total square footage, the finished space must comply with all local building codes, including requirements for points of egress. However, in areas prone to flooding, a finished basement might be seen as a liability by potential buyers and could potentially decrease your home's value.

Yes, most general contractors require an initial down payment. A reasonable deposit is typically between 10% and 25% of the total project cost, although this can vary by project size and location. This upfront payment helps the contractor cover initial costs like materials, permits, licensing, and hiring subcontractors. The remaining balance is usually billed according to a schedule outlined in your contract, often tied to project milestones or completion dates. Be cautious of contractors who ask for a large deposit of 50% or more, as this could be a red flag for a scam.

If you don’t have a crawl space but have a partial basement you want to make deeper, you can expect to spend a little less—between $40,000 and $90,000 on average. However, if you’re not adding new finished square footage, you won’t see much in the way of ROI.

The Madison, CT homeowners’ guide to basement remodels

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