Top-rated basement remodelers.

Get matched with top basement remodelers in Alton, IL

Enter your zip and get matched with up to 5 pros

Need a pro for your basement remodel project in Alton, IL?

Select your specific project to find the pro for you.

TRUSTED BY ALTON, IL HOMEOWNERS

  • Average homeowner rating star icon3.6
    Average homeowner rating
  • Verified reviews icon20
    Verified basement remodels reviews

Find Basement remodelers in Alton

Avatar for Prolifik Contracting LLC
Prolifik Contracting LLC
5.0(
7
)
Basement - Remodel

Serving Alton, IL and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Jonathan did an amazing job with our bathroom remodel. This was a complete remodel with an oversized shower, patterned ceramic tile, beautiful sliding glass doors, and of course the sink, toilet and flooring. The job was done very well and in good timing. He was very professional and kind. I would highly recommend his team for any work that you may need done!"
Full Kitchen Remodel
Full Kitchen Remodel
Full Bathroom Remodel
Full Bathroom Remodel
Open Floor Plan Remodel

+3

Response time2 days
Response rate100%
2 neighbors recently requested a quote
Avatar for JH Construction & Remodeling
JH Construction & Remodeling
5.0(
4
)
Basement - Remodel

Serving Alton, IL and surrounding areas

Approved

In business since 2009

Free estimates

"I can’t recommend Joe enough. After dealing with another contractor for 8 months who kept delaying just my roof and siding, Joe came in and completely turned things around. From signing with him to having the work fully completed was less than a month—and that included not only my roof and siding, but also a full master bathroom and master bedroom renovation, screen door replacements, all done in about 10 days. The before-and-after difference is incredible. My home went from stressful and outdated to feeling completely refreshed. Joe oversaw the entire project, paid close attention to every detail, and made sure everything was done right. Nothing felt rushed, even with the fast timeline. If you want someone reliable, efficient, and truly invested in quality work, Joe is the one. I would hire him again without hesitation."
4 neighbors recently requested a quote
Avatar for The Designer Craftsmen
The Designer Craftsmen
5.0(
5
)
Basement - Remodel

Serving Alton, IL and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

Hello there! I'm a Saint Charles/Saint Louis native and an experienced carpenter and remodeller of 17 years! Been in my own business since 2022. I love to do beautiful work at reasonable prices. I am focused on design-minded small construction and carpentry--this means that I am not primarily so focused on flashy features and the newest updates, and more focused on how I can create a project with you that makes sense with your specific house and it's architectural design. I love working with wood the most but really love doing most anything on a home and happy to do handyman work here and there as well. Please reach out so we can start a conversation! I'm happy to offer advice on how to navigate the construction industry or send you phone numbers of other great guys if you need other services. I focus on approachability and a down to earth experience. I love doing good work, i'm easy to deal with and show up when I say I will. Would love to work with you!

Saint Charles Re-Deck
Saint Charles Re-Deck
Saint Charles Re-Deck
Saint Charles Re-Deck
Saint Charles Re-Deck

+25

Avatar for Martens Painting and Home Remodelimg
Martens Painting and Home Remodelimg
4.3(
6
)
Basement - Remodel

Serving Alton, IL and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"AMAZING WORK! I was very impressed with the quality of work and the professionalism from this business. I not only had them powerwash my property, but they also painted the entire inside of the house. It looks like a brand new house thanks to these guys and it was all done in a very timely manner and at an unbeatable price! I would definitely recommend this business to any of my friends and family! GREAT WORK!"
Martens Penn
Bathroom renovations
Bathroom renovations
Bathroom renovations
3 neighbors recently requested a quote
Recommended by40%of homeowners
Avatar for Essential Concepts LLC
Essential Concepts LLC
New to Angi
Basement - Remodel

Serving Alton, IL and surrounding areas

Approved

We're a local small contracting company ready to take on your next project ? big or small.\nFrom kitchen & bathroom remodels, decks, and general repairs to commercial work ? we do it all with quality craftsmanship and honest pricing.\n? FREE Estimates\n? Reliable & Insured\n? Family-Owned & Operated\n? Serving Alton and surrounding communities\nIf you're thinking about a project, now?s the perfect time! Message us, comment below, or give us a call (618-915-9749) for your no-obligation free estimate.\nLet?s build something great together! ??\nEssentialconceptsllc.com\n

TNT Turnover Services
New to Angi
Basement - Remodel

Serving Alton, IL and surrounding areas

Approved

TNT Turnover Services isn’t just remodeling spaces—we’re transforming them.\n\nWe take outdated, worn, or underperforming areas and turn them into clean, modern, high-impact spaces built to impress and made to last. From kitchens and bathrooms to full property turnovers, our work is driven by precision, quality craftsmanship, and attention to every detail.\n\nAt TNT Turnover Services, we don’t believe in shortcuts—we believe in results. We bring reliability, speed, and professionalism to every project, delivering a smooth, hassle-free experience from start to finish. On time. On budget. Done right.\n\nWhether you’re upgrading your home or preparing a property for its next chapter, we’re here to raise the standard and exceed expectations.

...
Showing 1-10 of 139
Basement Remodel questions, answered by experts

It’s less expensive to finish your basement than it is to build an addition to your home. The average cost to refinish a basement is $32,000 (between $7 and $23 per square foot) while building an addition to your home costs $50,325 ($80 to $210 per square foot). Depending on the size of your basement and other factors, like moving plumbing and electrical, refinishing a basement is a more cost-effective option in most cases.

Home improvements that increase value offer a high return on investment (ROI) and can enhance your quality of life. Upgrades to your home’s curb appeal often add the most value, with garage door replacement having one of the best ROIs at 93%. Other high-value exterior projects include replacing your front door, upgrading siding and roofing, installing a stone veneer, adding new windows, and landscaping. For interior renovations, a fresh coat of paint provides an excellent ROI. Major projects like a kitchen remodel or upgrading appliances and HVAC systems also add significant value, as potential buyers appreciate the peace of mind that new equipment provides.

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.

Lifting a house and adding a basement is one way to add usable square footage. Lifting or jacking a house is a complex process, and it can be expensive, not to mention that you won’t be able to live in your house while it’s lifted, due to safety concerns. Lifting a house should only be done by experienced professionals.

Common mistakes when finishing basement walls include neglecting proper insulation, insufficient moisture management, and poor ventilation. Not addressing these issues can lead to mold growth, water damage, and discomfort. Additionally, inadequate planning, improper framing, and rushing the project can result in subpar outcomes. 

It's essential to follow best practices, seek professional guidance if needed, and prioritize thoroughness and attention to detail.

The Alton, IL homeowners’ guide to basement remodels

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