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Find Basement remodelers in Alton

Avatar for Prolifik Contracting LLC
Prolifik Contracting LLC
5.0(
4
)

Serving Alton, IL and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"We hired Prolifik for our basement bathroom remodel, and the experience was outstanding from start to finish. Our project manager Jon was professional, respectful, and incredibly skilled. He kept us informed every step of the way and was always available to answer our questions. We are looking forward to final results after our glass shower doors arrive. This process had exceeded our expectations, and the quality of the work is top tier! We highly recommend Prolifik and plan to use them for future projects!"
Full Kitchen Remodel
Full Kitchen Remodel
Full Bathroom Remodel
Full Bathroom Remodel
Open Floor Plan Remodel

+3

Response time2 days
Response rate100%
6 neighbors recently requested a quote
Avatar for The Designer Craftsmen
The Designer Craftsmen
5.0(
5
)

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

3 neighbors recently requested a quote
Avatar for Eaton Brothers Construction, LLC
Eaton Brothers Construction, LLC
5.0(
14
)

Serving Alton, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Warranties offered

Small jobs welcome

"Their communication throughout the process was really excellent, they worked with me to really understand what I wanted and when things would come up that wouldn’t work how we hoped, they were quick to work with me to come to a solution. They did the work fast and cleaned up after themselves with minimal mess. Everything I could’ve hoped for."
STL Miami house
STL Miami house
STL Miami house
STL Miami house
STL Miami house

+62

Response time1 day
33 neighbors recently requested a quote
Recommended by42%of homeowners
Avatar for Redeemed Renovations
Redeemed Renovations
5.0(
2
)

Serving Alton, IL and surrounding areas

Approved

In business since 2024

Free estimates

Warranties offered

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs.\nIt is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project.\nIn order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer \nin a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Siding
Siding
Stairwell
Response time2 days
3 neighbors recently requested a quote
TNT Turnover Services
New to Angi

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.

1 neighbors recently requested a quote
Avatar for RDB CONSTRUCTION LLC
RDB CONSTRUCTION LLC
New to Angi

Serving Alton, IL and surrounding areas

Approved

Free estimates

Small jobs welcome

As 30+ years experience carpenters, we are always prepared to take on your projects with precision and care. We pride ourselves on being courteous and polite, ensuring a positive experience from start to finish. Our approach involves actively listening to your needs and preferences to deliver tailored solutions. ???? We understand the importance of clear communication and collaboration to bring your vision to life. From the initial consultation to the final touches, We are dedicated to providing exceptional craftsmanship. ? We are ready to start, so contact me today. \n

Response time10 hrs
Response rate100%
Avatar for Mosby Building Arts Ltd
Mosby Building Arts Ltd
4.6(
97
)

Serving Alton, IL and surrounding areas

In business since 1947

Free estimates

Warranties offered

"Mosby solved some sticky floor system issues in our 1924-built home. They then went on to design and install fit and finish in a bathroom remodel that we had started ourselves (50/50 gut/rehab). They were happy to install fixtures we had purchased and offered solutions and options for bringing the main floor bath to a great completion. Jake did a great job specing-out the job, liaison between us and the designers and site crew, and following up afterwards. Mosby isn't the cheapest, but they are among the most competent. You pay for the experience and team assets they bring to the job. Frankly, I'd rather pay up front and be done, than continue to pay over and over again because I went with the lowest bid. <br />"
Recommended by88%of homeowners
Avatar for Midtown Home Improvements
Midtown Home Improvements
4.4(
191
)

Serving Alton, IL and surrounding areas

In business since 1990

Free estimates

Warranties offered

"Had windows replaced by Midtown Home improvements and we are very satisfied with every step of the process, they kept us informed from signing the contract to installation of windows. I was very skeptical of contractors but Midtown Home Improvements won us over, even our building inspector told us they did a great job. We have decided to have Midtown Home Improvements to remodel our bathroom."
Recommended by84%of homeowners
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FAQs for basement remodeling projects in Alton, IL

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 Alton, IL homeowners’ guide to basement remodelings

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