
Get matched with top basement remodelers in O Fallon, MO
There are 26 highly-rated local basement remodelers.
Need a pro for your basement remodel project in O Fallon, MO?
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Verified Reviews for Basement Remodel pros in O Fallon, MO
*The Angi rating for Basement Remodel companies in O Fallon, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Remodel needs.
*The HomeAdvisor rating for Basement Remodel companies in O Fallon, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Remodel needs.
Last update on October 05, 2025
Find Basement remodelers in O Fallon
STL Rooftops
STL Rooftops
Home renovation and remodeling specialist. If you're looking for someone who can do practically everything in your home, give us a call. From electrical and plumbing, to framing and kitchen remodel, we've done it all!
Home renovation and remodeling specialist. If you're looking for someone who can do practically everything in your home, give us a call. From electrical and plumbing, to framing and kitchen remodel, we've done it all!
B and L Construction
B and L Construction
at B & L construction, we give money back for referrals, we guarantee our work. and at this time all we are taking is cash for pay
at B & L construction, we give money back for referrals, we guarantee our work. and at this time all we are taking is cash for pay
Starlight Remodeling
Starlight Remodeling
We are a small construction company based in the St Louis area. We can handle most jobs and able to work with any budgets.
"The tile floor was improperly laid. The grout did not match and clumps of grout were on the actual pieces of tile. There were broken tiles. The shower was completely installed wrong. The pipes were moved to the outer wall of my house with no insulation. The shower basin was cracked. Water leaked all underneath the floor and sub floor. The tiles were not cut evenly. They were not laid evenly. Was an absolute nightmare. I had to have another company come out and gut the entire bathroom and start over."
Mandie M on March 2020
We are a small construction company based in the St Louis area. We can handle most jobs and able to work with any budgets.
"The tile floor was improperly laid. The grout did not match and clumps of grout were on the actual pieces of tile. There were broken tiles. The shower was completely installed wrong. The pipes were moved to the outer wall of my house with no insulation. The shower basin was cracked. Water leaked all underneath the floor and sub floor. The tiles were not cut evenly. They were not laid evenly. Was an absolute nightmare. I had to have another company come out and gut the entire bathroom and start over."
Mandie M on March 2020
Marsworks Services
Marsworks Services
Service is in our name for a reason.
Service is in our name for a reason.
St. Charles Home Improvements
St. Charles Home Improvements
St. Charles Home Improvements is a partnership bringing together over 25 years of knowledge and expertise in the construction and insurance (as pertaining to construction) fields. We offer a variety of promotional discounts and savings pertaining to first-time and repeat customers, as well as special offers for referrals and reviews.
St. Charles Home Improvements is a partnership bringing together over 25 years of knowledge and expertise in the construction and insurance (as pertaining to construction) fields. We offer a variety of promotional discounts and savings pertaining to first-time and repeat customers, as well as special offers for referrals and reviews.
Missouri Ally Contracting LLC
Missouri Ally Contracting LLC
We are a 2-man team consisting of a master carpenter and a general carpenter. We pride ourselves in being professional, courteous, and clean.
We are a 2-man team consisting of a master carpenter and a general carpenter. We pride ourselves in being professional, courteous, and clean.
JK Consulting
JK Consulting
J.K. Consulting provides professional contracting services for repair or replacement. We specialize in helping homeowners and businesses with their insurance claims by offering no obligation inspections and professional assistance throughout the process. J.K. Consulting is comprised of a group of dedicated restoration professionals with over 30 years of combined experience. We're a local company that has discovered that the simple Midwestern small town values of honesty, integrity, and hard work are valued by customers now more than ever.
J.K. Consulting provides professional contracting services for repair or replacement. We specialize in helping homeowners and businesses with their insurance claims by offering no obligation inspections and professional assistance throughout the process. J.K. Consulting is comprised of a group of dedicated restoration professionals with over 30 years of combined experience. We're a local company that has discovered that the simple Midwestern small town values of honesty, integrity, and hard work are valued by customers now more than ever.
k4 konstruction LLC
k4 konstruction LLC
We offer all new home construction to remodeling and even handyman services
"He started by replacing the screen door. He hung it out of square but he denied there was a problem and made no effort to fix it. I insisted and finally the door was re-hung by one of his crew. He power-washed and sealed the deck. The product he used has sand in it, which I didn't know and it feels gritty when I'm barefoot. Densing told me to rent a small dumpster from a particular company, which I did. There was a lot of junk and trash in the basement, accumulated over 30 years, and he worked hard to haul everything up and out to the dumpster. My husband's workshop was of particular concern to me; I asked him to set aside anything that looked to be in usable/good condition so I could look at it. Unfortunately, he didn't do that, but just put it all in the dumpster, so I have no idea what was thrown out. I also needed to rent a second dumpster, which may not have been necessary if he'd done a better job estimating what he'd need. There were unanticipated problems in the basement, which were necessary but costly repairs. Densing required payment in advance for any supplies, plus 60% of the total when he started. There was mold in the drywall and in the insulation behind it. He said he would treat that, put up a vapor barrier, new insulation and new drywall. All of that was taken care of - it looks good and there is no odor. We also found quite a few cracks in the foundation walls, which he said he could repair with an epoxy-resin sealer. I did get another opinion and estimate and decided to have K4 do the work. Densing said he would give me a receipt and documentation that would satisfy any prospective buyer, if I decide to sell the house. I'd also like to mention that Densing and his workers used my refrigerator to store their soft drinks and went into my kitchen cabinets for glasses. Without asking or obtaining my permission. Densing suggested I replace the 2 basement windows and asked for the money to order them, nearly $500. I've heard a couple of different stories about why he hasn't gotten or installed the windows, but he did not reply when I asked for a refund. Work was also left undone after installation of a drain under a flagstone and gravel walkway in the backyard. The work was sloppy; a lot of the gravel disappeared and it's now too low (didn't replace enough soil) and the flagstones are so poorly set that some rock and none are the correct distance apart for anyone's stride. The chimney needed some tuckpointing Densing said, but the result is a sloppy job. No one has returned to fix anything, in spite of promises. I'm especially concerned because I have not received ANY paper work from K-4. I do not have contracts or receipts for the work done. He did not provide the documentation for the repair of the foundation cracks, as promised. He will not respond to phone calls or texts and has apparently instructed his crew to do the same. They've moved on to a bigger project and I don't expect to see or hear from them again. Although the workmanship, for the most part, was of good quality (with some re-do's), Densing's manipulative manner and boastful attitude were problems. He spoke derisively about everyone he has worked for, especially the owner of the paint company for whom he was working when he started his off-the-books work for me. I should have been more careful, but all of his talk put me off-guard, as he intended, and I foolishly thought he was trustworthy. He requested that I make all checks payable to his girlfriend, not to him or to the company. Although I know it's a huge red flag that something isn't legitimate about him or the company, I paid his girlfriend. I would not recommend K-4 Konstruction or Mark Densing to anyone."
Carol R on August 2018
We offer all new home construction to remodeling and even handyman services
"He started by replacing the screen door. He hung it out of square but he denied there was a problem and made no effort to fix it. I insisted and finally the door was re-hung by one of his crew. He power-washed and sealed the deck. The product he used has sand in it, which I didn't know and it feels gritty when I'm barefoot. Densing told me to rent a small dumpster from a particular company, which I did. There was a lot of junk and trash in the basement, accumulated over 30 years, and he worked hard to haul everything up and out to the dumpster. My husband's workshop was of particular concern to me; I asked him to set aside anything that looked to be in usable/good condition so I could look at it. Unfortunately, he didn't do that, but just put it all in the dumpster, so I have no idea what was thrown out. I also needed to rent a second dumpster, which may not have been necessary if he'd done a better job estimating what he'd need. There were unanticipated problems in the basement, which were necessary but costly repairs. Densing required payment in advance for any supplies, plus 60% of the total when he started. There was mold in the drywall and in the insulation behind it. He said he would treat that, put up a vapor barrier, new insulation and new drywall. All of that was taken care of - it looks good and there is no odor. We also found quite a few cracks in the foundation walls, which he said he could repair with an epoxy-resin sealer. I did get another opinion and estimate and decided to have K4 do the work. Densing said he would give me a receipt and documentation that would satisfy any prospective buyer, if I decide to sell the house. I'd also like to mention that Densing and his workers used my refrigerator to store their soft drinks and went into my kitchen cabinets for glasses. Without asking or obtaining my permission. Densing suggested I replace the 2 basement windows and asked for the money to order them, nearly $500. I've heard a couple of different stories about why he hasn't gotten or installed the windows, but he did not reply when I asked for a refund. Work was also left undone after installation of a drain under a flagstone and gravel walkway in the backyard. The work was sloppy; a lot of the gravel disappeared and it's now too low (didn't replace enough soil) and the flagstones are so poorly set that some rock and none are the correct distance apart for anyone's stride. The chimney needed some tuckpointing Densing said, but the result is a sloppy job. No one has returned to fix anything, in spite of promises. I'm especially concerned because I have not received ANY paper work from K-4. I do not have contracts or receipts for the work done. He did not provide the documentation for the repair of the foundation cracks, as promised. He will not respond to phone calls or texts and has apparently instructed his crew to do the same. They've moved on to a bigger project and I don't expect to see or hear from them again. Although the workmanship, for the most part, was of good quality (with some re-do's), Densing's manipulative manner and boastful attitude were problems. He spoke derisively about everyone he has worked for, especially the owner of the paint company for whom he was working when he started his off-the-books work for me. I should have been more careful, but all of his talk put me off-guard, as he intended, and I foolishly thought he was trustworthy. He requested that I make all checks payable to his girlfriend, not to him or to the company. Although I know it's a huge red flag that something isn't legitimate about him or the company, I paid his girlfriend. I would not recommend K-4 Konstruction or Mark Densing to anyone."
Carol R on August 2018
Green Tree Home Solutions
Green Tree Home Solutions
Green Tree Home Solutions is a General Contractor in the greater St Louis, and surrounding area's. We are a BBB accredited business with an A rating, and strive every day to keep it that way. We have around ten employees at peak season, and we are very passionate about what we do. We offer free estimates, and can even help you with financing your project. So when looking for a reputable contractor that you can trust, we will always be here when you need us.
"I was TOTALLY satisfied with the work Greentree did on my house. My contact guy was Mr. Bill Majers. He got up on the roof with the insurance adjustor and indicated all the places where there was hail and wind damage. They worked with my insurance company to get the entire project covered by my insurance. The roofers were fast and very efficient. I have nothing but praise for this company and for Mr. Bill Majers, who went out of his way to ensure everything was completed to my total satisfaction."
Ardelle R on December 2020
Green Tree Home Solutions is a General Contractor in the greater St Louis, and surrounding area's. We are a BBB accredited business with an A rating, and strive every day to keep it that way. We have around ten employees at peak season, and we are very passionate about what we do. We offer free estimates, and can even help you with financing your project. So when looking for a reputable contractor that you can trust, we will always be here when you need us.
"I was TOTALLY satisfied with the work Greentree did on my house. My contact guy was Mr. Bill Majers. He got up on the roof with the insurance adjustor and indicated all the places where there was hail and wind damage. They worked with my insurance company to get the entire project covered by my insurance. The roofers were fast and very efficient. I have nothing but praise for this company and for Mr. Bill Majers, who went out of his way to ensure everything was completed to my total satisfaction."
Ardelle R on December 2020
Pete Pagano
Pete Pagano
Pete Pagano (that's me) runs a small general contracting company that specializes in carpentry-related items, and making your house or structure better than it was before. We stick to what we know and are good at, while sub-contracting out the rest; this allows us to provide efficient, high-quality service, and ensure that we always have the right person for the job doing the work.
Pete Pagano (that's me) runs a small general contracting company that specializes in carpentry-related items, and making your house or structure better than it was before. We stick to what we know and are good at, while sub-contracting out the rest; this allows us to provide efficient, high-quality service, and ensure that we always have the right person for the job doing the work.
The O Fallon, MO homeowners’ guide to basement remodels
From average costs to expert advice, get all the answers you need to get your job done.
An unfinished basement has a lot of potential for a family room or guest suite. So how much does it cost to finish a basement? Read on for all cost factors.
- •
Discover the cost to finish a basement laundry room. Learn about average prices, key cost factors, and tips to budget your basement laundry remodel.
A basement remodel can often cost as much as adding another room. However, homeowners should consider the usefulness and ROI of a remodel.
Thinking about refinishing your basement? A bit of planning can go a long way. Here's everything you need to know to get started.
Thinking of refinishing your basement and looking for basement remodel ideas? Check out 25 ways to transform your subterranean space.
Need to know how long it takes to finish a basement? Find out the average timeline and some factors to consider to get a good estimate for your project.
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