ST Construction - SandTech
2nd year as a Best Pick
certified company
Based on 121 reviews
Our Certification Process
Best Pick Guarantee
Verified General Liability Ins.
2nd year as a Best Pick Call
"Do your doors and windows stick? Do you have cracks in your brick, slab, or Sheetrock? Do you have plumbing leaks? We can help. We provide quality service and highly trained staff, and every job has a foreman to make sure your job is done right the first time."

Stacy Schaaf | Owner
Company Information
Services Offered
SandTech offers foundation repair services for residential and commercial customers. The company installs steel-reinforced concrete pilings and deep-drilled bell bottom piers in addition to performing pier-and-beam slab work and mud pumping. SandTech also installs root shields and yard drainage as well as provides under-slab plumbing services, concrete repairs, and cosmetic repairs.
The company offers a transferable lifetime warranty.
Company History
SandTech is family owned and operated. The company has been in business since 1968.
Areas Served
West Houston Suburbs, North Houston Suburbs, Fort Bend County & Southwest Houston, The Heights/Midtown
A selection of 121 homeowner reviews:
“I had an amazing experience. I liked everything about them. They were the best company I've ever worked with in terms of home repair. We were dealing with a very time-sensitive, stressful situation, and the owner of the company was available to me whenever I needed him. The whole company was all-star. Everybody that we worked with was super knowledgeable, competent, and trustworthy. I'd highly recommend them.”
“I loved how straightforward and honest they were. The technician is a super good guy. They're the most honest company I've ever dealt with, and I'd highly recommend them.”
“They were really thorough, and they explained everything to me. They showed up on time, had all the stuff they needed, and did a really good job. I'd give them an A+.”
“They were very responsive and showed up on time—good job.”
“They did good work, so I'll give them an A+.”
“They did some plumbing, and I liked that they didn't bother me. They did the work, and I didn't have to answer any questions, pick out anything, or go to the store. My next door neighbor, who's our decorator, called them up, said she needed a new toilet, and when I came home from work, there was a new toilet. I'd give them an A+. I wasn't here when they came, but I'm very likely to recommend them.”
“They did some plumbing work for me, and it's been a positive experience so far. I have no complaints, and I would recommend them.”
“They gave us good service and were dependable. They get an A.”
“They were great. We had to move out for all the repairs at our house, but I had no complaints with them.”
“I had a positive experience with SandTech.”
“They were very professional. I liked the people that did the work, and I liked the person that did the bids who I worked directly with. I liked them all. They did the foundation two years ago, and it probably took a week and a half. They did come back because I had a problem, but they came back and worked on it again. I'm still really having problems with the foundation, but I don't think that there's anything they can do about it. It's not them. I'd give them an excellent grade.”
“They have a very high sense of professionalism about their work. They were trying to find the cause of the foundation work, the water damage, and what had caused it. I heard about them from insurance, and I would grade them an A.”
“They were perfectly fine. It's been a while, but the guy that came out was very helpful, and they didn't have to do as much work as I originally thought, so I thought they were honest. They did foundation work and a little leveling on the garage. They get an A.”
“It's been a little while, but they came recommended. They were very professional and did exactly what they said they would do. Overall, they were just a good experience. I believe they do things that others don't, so the level of service is higher. They were replacing all of the sewer pipes for the house; under-slab plumbing, for example. It took them a couple of days because it was a lot of digging.”
“They're very through. I knew them from before when I lived in my old house, so there wasn't any doubt that they were going to be the ones that I wanted to work on this house. I felt they were very professional, and the estimates that they gave me were right. They really stuck to those estimates and still did quality work. They did a lot of plumbing work, and they worked in conjunction with the electrical contractor in a very professional way. I haven't had any plumbing issues since then, and a couple of times when I've called with questions, they've responded promptly, and they were not just informational, but educational—'OK, here's the kind of thing we did, and here's what you should watch out for. You should call us in any case, but if this happens, this is what it's going to look like; if that happens, it will look like something different, and we'll come out and help you.' I'd definitely grade them an A+.”
“I'd give them an A+.”
“This time they did our foundation and also repaired our plumbing in a problem that we had in our front bathroom. We had a leak in our front tub because the foundation had sunk, so they came in, raised our foundation, and rerouted our plumbing that had also sunk. They cleaned up after themselves and did a good job, so I also recommend them to any of my friends that need foundation or plumbing work. I would grade them an A+.”
“More than any contracting company that I have been in contact with, I liked that they did what they said they would do when they were going to do it. They kept me informed the entire way, and it cost what they said it would cost. They were respectful of my neighbors, and they were clean before and after. They replaced all the plumbing underneath a 1961 house that I bought. The job took them one to two weeks. I would rate them A+.”
“They got everything done in a timely manner, and all their workers were friendly with no issues. They did foundation repair. I chose them because they did work on the house back in the 1980s and I still had a warranty with them. They get an A.”
“They did the job, started on time, and finished on time. They did leveling. I was having some work done on my house, and the contractor showed me how the part of it was sinking. He got in touch with SandTech, and they do a great job. I have no complaints or negative things to say about them. I'd rate them as an A.”
“They were nice. They did everything I needed them to do, and they had worked on the house before. It was foundation problems. I haven't had any problems since then. They were really thorough. The head guy would always come talk to me at the end of the day and walk around the house with me. I think it was just a couple of days. They deserve an A.”
“They did a really good job, and they were really honest. I had to have some plumbing repaired underneath my house back in the spring. They were recommended by my contractor who did some work on my house. The customer service was very good. I'd give them a good rating—an A.”
“I had a positive experience with SandTech. They tried to make the work complete. They tried to do everything in a professional way. They worked on the foundation. We had a little problem, but that's to be expected. They did the even way out, but that didn't work, so then they came back and did something different. Overall, I'm satisfied. They're very professional, and they stand behind their work. I'd give them an A.”
“They did that a long time ago, but it was fine. SandTech was great.”
“They did a great job. The president came out himself and planned out all the work, and all of his workmen were really professional. There was some follow-up work that needed to be done, and he told me he'd come and do a couple of things, so I'm sure he will. He was very helpful in solving some other problems for us and helping us figure it out. The overall service was very, very good. It was plumbing work, so they did all our sewer pipes. They get an A.”
“They were very professional and kept us well informed. They repaired the plumbing underneath the house after we leveled the foundation. I haven't had any issues with it since then. I found them through our insurance company. I'll give them an A.”
“We were actually in the process of selling that house when we had them do repair work, and they got it done in a very timely fashion with good quality. They were replacing some pipes underneath the slab. Everything looked OK. I didn't have to call them back with any issues. I'd rate them as an A.”
“They did a great job. They did work for one of my mom's friends, so that's how I found them. They did water drainage in the backyard. They took care of everything. It was just one guy. He gets an A.”
“It was good. Everything was fine, so they just did a good job. They did plumbing and foundation repair. I found out about them through the insurance company. It took them a week or two to do the work. I'd give them an A.”
“They have good service. The main guy that I dealt with, Keith, has worked with us very well, so everything is going well. They were doing both plumbing and foundation work. I'm not really done dealing with it. They still got some other stuff, so they're still helping us with everything. Everything we've had them do so far has been good. I'd rate them as an A.”
“They came when they said they would and cleaned up very well. They did the foundation on the front. They were recommended by a friend. The customer service was great. It was very good. I'd give them an A.”
“It was really good. They just did good work. I chose them because I had a whole bunch of recommendations. They leveled my house. I'd say they get an A.”
“They were leveling a house just to keep it from settling any more. It took them roughly a week, and they had to put in more piers than they had thought. I liked that they showed up on time, worked their behinds off, and cleaned up when they left. They get an A.”
“SandTech is absolutely wonderful. I could not be happier, and I have recommended them to four people. They did foundation repair, and I would give them an A+++. They are amazing.”
“I love SandTech. I think they are wonderful, and I love the owner. He is as nice as can be, and he goes out of his way. It's a great, great company, and I highly recommend them—A+.”
“They did a good job, and they were excellent. I'd give an A+ to everybody. I had two different crews, and they were both fantastic. I mention them whenever I can.”
“SandTech did a great job. Their engineer explained it all to me, and he knew what he was talking about. They put 23 piles along the front of my house and raised it up because the foundation had cracked, and I haven't had any problems since then—it turned out perfect. They earned an A grade.”
“Everything's great with SandTech. Everything was wonderful. They did a fantastic job—no complaints. I'd rate them a 100 percent on everything.”
“They did everything they said they were going to do when they said they were going to do it, and they were very efficient. They repiped my house. I chose them from a recommendation. Their customer service was the highest you could ask for. I'd rate them as A+.”
“They were honest, did the job, and got it done. They came highly recommended. This is at least the third or fourth time I've used them, and the customer service is great. I'd give them an A+.”
“I?had a very positive experience with SandTech. I liked everything about them. I was pleased with the quality of their work, I was pleased with their salesman, and I was pleased with their supervisor. They've done a number of jobs in this neighborhood, so we were very pleased with them. In doing the foundation work, they updated my underground plumbing while they were down there. Someone had referred me to them, and I referred them to a couple of other people. Everybody's been pleased with them as far as I know. I'd definitely give them an A.”
“SandTech was responsive, and they took care of my needs. They worked well with the insurance company. I thought they did a great job. I had a leak under my slab that they were able to fix for me that caused foundation problems. I'd give them an A+.”
“They told me what they were doing, and they were just really friendly—good service. I felt comfortable with them working in my house. They had to go under my house to try to figure out where some water was, and it turned out there was a pipe that was leaking. I'd give them an A+.”
“SandTech did the work correctly after the first company we had did it completely wrong, so that was a plus. We had some broken septic pipe under our house that they had to dig under and repair. They were always very responsive whenever I called or if I had any questions. We understood what they were going to do, and they made it clear what we needed to have done. They were thorough in their plan. I'd give them an A+.”
“I felt they were very professional. They put in a new sewer and leveled my foundation. It was just very good. I chose them from a recommendation. I'd say they're an A.”
“SandTech did a great job. They are really detailed, and they really update you with every process, so you know exactly what's going on and how long it will take. They give you several options before they start the work, so you get to choose which one fits your situation. We really like them; they're really good. Their customer service is a ten out of ten. I'd give them an A.”
“SandTech did foundation repair. I liked that they cleaned up after themselves and seemed trustworthy. I would grade them as an A.”