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  • Average homeowner rating star icon3.7
    Average homeowner rating
  • Verified reviews icon21
    Verified basement remodels reviews

Top-Rated Basement remodelers in Alton - Updated Nov 2026

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

Warranties offered

"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 My home went from stressful and outdated to feeling completely refreshed.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."
3 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
1 neighbors recently requested a quote
Recommended by40%of homeowners
Avatar for OV Development & Construction Group LLC
OV Development & Construction Group LLC
5.0(
2
)
Basement - Remodel

Serving Alton, IL and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Great customer service they arrived on SAID time ON time. They didn't leave until the job was completed. I spotted one small flaw but nothing to complain about other than that they did a great job. They cleaned up behind themselves. I had to disposed of all the trash myself but they did put all the trash in bags and sat them outside nice and neat and it was also in the contract that the customer is responsible for disposal of trash. It was not a surprise. This properly why the cost was reasonably priced. I will use them again."
14 neighbors recently requested a quote
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.

Mueller Contracting LLC
New to Angi
Basement - Remodel

Serving Alton, IL and surrounding areas

Approved

Free estimates

Small jobs welcome

Offers commercial services

We are a small, family based company that provides excellent communication, and excellent work. We have a high attention to detail. We would be appreciative of your work. We have been in the construction industry for 20 years. We can provide select demolition, small structural demolition, and clean up services.

1 neighbors recently requested a quote
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Basement Remodel FAQs, answered by experts

Permits may be required for major repairs, structural work, or electrical and plumbing restoration after a flood. Check with your local building department to determine permit requirements and associated fees for your flooded basement cleanup project. Obtaining the correct permits helps ensure work is done safely and up to code.

When choosing materials for finishing basement walls, consider factors such as moisture resistance, durability, and fire resistance. Opt for materials specifically designed for basement environments, like moisture-resistant drywall or cement board. Insulation with vapor barriers can help regulate temperature and prevent condensation. Consider using mold-resistant paints or coatings. 

Research and consult with experts to select materials that are suitable for your specific basement conditions and intended use. Prioritize quality and compatibility to achieve long-lasting and aesthetically pleasing results.

Egress windows or doors are required in finished basements to meet safety and building codes. If your basement is unfinished and used as a storage space, egress windows are not required, but anything considered a habitable space must have an additional point of egress in addition to the stairs.

When considering finishing your basement, take into account a few pros and cons:

Pros

  • Can increase the value of your home

  • Separate space from the rest of the house 

  • Customize and personalize the basement to suit your needs and style

  • Increase the amount of living space in your home

Cons

  • May not regain enough value to cover the cost of finishing

  • Lack of natural light if it’s below ground level

  • Moisture or flooding can cause costly damage

  • Installing plumbing and electrical can be messy and costly

Since DIYing a basement remodel isn't typically advised, there are some ways that you can still save money on this project without putting yourself in danger. Some ways to save money on a basement remodel include:

  • Painting walls yourself versus including in the cost of the remodel 

  • Installing light fixtures yourself

  • Choosing prefabricated fixtures, like cabinets, over custom ones

  • Choosing a budget-friendly flooring option, like laminate or vinyl flooring, and add rugs where necessary

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.