Proudly serving Sacramento, San Jose, Stockton, Oakland, Elk Grove, Santa Rosa, and the greater Bay Area.
Foundation Repair in Napa, CA
Are you in need of foundation repair in Napa, CA? If so, we can help! We’ve been doing foundation repairs in Napa since 2005. If your home is experiencing foundation problems, let us help!

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+ Years
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Places 2024 -
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We’re Bay Area Underpinning, an experienced, professional foundation repair and replacement contractor serving homeowners in Napa, CA. We handle everything from lifting sunken pool decks to full, or partial, foundation replacements. Scroll down to the bottom of this page and read our customer reviews!
Common Foundation Problems in Napa
We are able to repair all foundation problems in Napa, CA including…
- Drainage problems
- Wet basements or crawl spaces
- Improper grading
- Underpinning problems
- Earthquake damage
- Landslide damage
- Retaining wall failure
- Expansive soil (This is a common problem in the Bay Area)
- Beams and posts that have rotted
- Wall, ceiling, or floor cracks
- Bowed walls
- Rotated walls
- Doors and windows that stick
- Uneven floors

Your home’s structural integrity rests on the soundness of its foundation. If you’re having trouble with anything we’ve listed here – or even something we haven’t mentioned – contact us today and we’ll come out for an inspection.
Foundation Repair Services in Napa

- Concrete Lifting – Uneven sidewalks, patios, driveways, and other concrete surfaces are a trip hazard. The good news is most uneven concrete slabs don’t require removal and replacement. We can easily raise them in just a few hours using polyurethane foam injection.
- Drilled Concrete Piers – Drilled concrete piers are a common repair solution for homes built on hillsides that are experiencing lateral movement due to soil creep.
- Helical Piers – Lightweight foundations that are settling can be raised and stabilized using helical piers. Helical piers are excellent for supporting foundations built on problematic soil.
- Crawl Space Repair – A sinking crawl space can often be repaired using screw jacks. In most cases, the existing pier blocks are in great shape. So, we just remove and replace the posts or the damaged screw jacks. At that point, the floor can be lifted.
- Foundation Repair – Bay Area Underpinning offers foundation repair using push piers, helical piers, slab piers, and more. Contact us today for a free foundation evaluation
Our Process
Schedule Free Inspection
One of our contact center representatives will reach out to you to determine your problem and set the best time for one of our certified field inspectors to visit your home.
Consult with Our Certified Inspector
Our certified field inspector will visit your home to observe the problems in your home and inspect other areas of your home that may have been impacted.
Installation of Customized Solutions
Our professional production crew installs patented, American-made solutions in each home with care and strives to leave the area better than we found it.
Free Foundation Repair Inspection and Estimate in Napa, CA
If you think your Napa, CA home might have a foundation problem, contact us today to schedule a free foundation inspection and get a repair estimate.
Bay Area Underpinning prides itself on providing a quality product at a fair price in Napa, CA. A lot of consideration and care goes into each foundation repair job that we do, and we are very experienced in fixing issues such as misaligned or sticking doors, spongy or bouncy floors and leaning chimneys. If you have noticed any of these symptoms or other foundation problems, don’t hesitate to give the pros a call!
What Our Customers Are Saying
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Kept appointment after a long day, and although was not able to help with my problem, was very informative and gave great advice for me to…
Kept appointment after a long day, and although was not able to help with my problem, was very informative and gave great advice for me to follow up on. Great people.
James P.
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I had Joe inspect the crawlspace of my home, and I couldn't be more satisfied with the experience. First off, he did the inspection for…
I had Joe inspect the crawlspace of my home, and I couldn't be more satisfied with the experience. First off, he did the inspection for free, which is rare these days! Joe was professional, punctual, and thorough in his inspection, explaining everything he found in a way that was easy to understand. He took the time to ensure I knew what was going on beneath my home and didn't push any unnecessary services. I highly recommend him for anyone in need of an honest and detailed inspection. Definitely a 5-star experience!"
Summer X.
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Jim Rivera did a terrific job. His knowledge and professionalism really set him apart from the competition. Can't say enough good things…
Jim Rivera did a terrific job. His knowledge and professionalism really set him apart from the competition. Can't say enough good things about the quality service he provides.
Richard Weber
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We had Jonathan Falcone assess the foundation and sloping issues of our home, and he's been incredibly accommodating throughout the process….
We had Jonathan Falcone assess the foundation and sloping issues of our home, and he's been incredibly accommodating throughout the process. He thoroughly explained the necessary work and has been attentive and helpful with the quoting and planning stages. We're very satisfied with the experience so far and we are eager for the foundation and underpinning work to begin soon.
Elena F.
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This company gets a 10 out of 10 from me. From my initial consultation with Rick DeSoto to the work performed by foreman Raul, and his team …
This company gets a 10 out of 10 from me. From my initial consultation with Rick DeSoto to the work performed by foreman Raul, and his team Jonathan and Demareon, this was the best possible experience in working Bay Area Underpinning for the first time. The crew was professional and adjusted the leveling jacks (and even added a couple as was needed) with care and great attention. Pricing was very reasonable too. I'll never trust any other company to do this type of work at my home. 100% satisfied with the work and my interactions with the crew. A+ work performed = A VERY HAPPY CUSTOMER!!!
Lisa Carter
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BAU did a great job on my ADU that had a serious moisture problem that was causing the building to deteriorate. I couldn't remove the tile…
BAU did a great job on my ADU that had a serious moisture problem that was causing the building to deteriorate. I couldn't remove the tile without replacing it all at a large expense so they did the whole job in a very cramped crawl space. The guys they sent out were great and finished with everything in one day!!!
Laurel M.
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Isaac came out to inspect a rotten wooden post, and patiently explained the issues and recommended remedies. Great to know the damage is…
Isaac came out to inspect a rotten wooden post, and patiently explained the issues and recommended remedies. Great to know the damage is not structural. Impressed by their expertise, honesty and professionalism. Would recommend!
Joanna ..
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1. Call Center ***** – they took the call after 6:00 PM and were extremely professional. Guy on the phone (sorry I didn't write is name…
1. Call Center ***** – they took the call after 6:00 PM and were extremely professional. Guy on the phone (sorry I didn't write is name down), was so kind and emailed confirmation immediately. 2. Pre-Visit Confirmation ***** – Email, text and phone calls to confirm the time and prep me for the visit. Incredible. Nobody is doing this right these days and BAU absolutely has it nailed down. 3. Estimator ***** – I wish I could offer more than 5 stars. Joe Le Bel is the most professional tradesman I've met in a long time. Others are good too, but Joe is the gold standard. He sat with me to ask what I was concerned about and what was important to my family. Who does that???? Oh yeah, Joe did. So comforting. Joe was professional and respectful of our space. Was careful to be conscientious about where he placed his gear, tools and instruments. Super clean going under the house without tracking dirt and debris back into the house. (The inspectors from HomeGuard could definitely take notes on this!) Then, once Joe finished, he sat down with us and talked us through all the different aspects off his inspection. What an extremely positive interaction. I would 100% recommend BAU and Joe. Can't get any better than this. Thanks BAU for a great culture of excellence. Thanks Joe for being such a good human and professional!
Michael Wilson
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We recently purchased a home in San Jose. In the report it stated that our home was fine and no foundation issues were noted. Upon moving…
We recently purchased a home in San Jose. In the report it stated that our home was fine and no foundation issues were noted. Upon moving in my wife noticed some cracks started to appear on the walls around the house. We contacted Bay Area underpinning to have them come and inspect our house. A couple of days before our appointment, Jim Rivera gave us a call to confirm the day and time of the appointment. This was the first positive experience we had with Jim and BAU. On the day of the appointment Jim called to let us know that he was 30 minutes away and showed up right on time. Once he arrived he listened to the issues we were noticing and then he went to work. He brought in some hi-tek tools and explained to us what the readings meant. Jim was extremely thorough and personable. He clearly has a lot of knowledge and showed us a bunch of photos that he took while he was in our crawlspace as well as photos of some exterior things that he noticed. Overall he said our home was in great condition with only minimal issues that we should address. He was very patient in answering all of our questions and provided us with a quote when he was finished. We were pleasantly surprised that the cost was very reasonable and comes with a lifetime warranty. We will be giving our business to Jim and Bay Area Underpinning. As a new home owner we were terrified of what the cost could be to fix our home. Jim really helped us understand what was going on and we would suggest that anyone who is having similar foundation issues like ours, we highly recommend that you should call Jim Rivera and Bay Area Underpinning.
Calin Kalkai
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The team I worked with at BAU was great. I hired them to repair some minor vertical and horizontal foundation cracks that were found in a…
The team I worked with at BAU was great. I hired them to repair some minor vertical and horizontal foundation cracks that were found in a recent general home inspection. Everyone who came out was upbeat, professional, punctual, thorough, and highly detailed. Hunter came out first to check the entire foundation and give a free estimate. They then split the work up into two dates, and each crew was great. Michael and James came out first for the initial round, and then Alexander and Gabe came out to wrap up the last few areas. The guys were always on time, which is greatly appreciated. Both repair teams also did their own additional checks of the surrounding areas, also greatly appreciated. They were also able to provide before and after pictures, and were respectful of the property.
Anonymous Author
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I called in Bay Area Underpinning for foundation work. They were wonderful answering my many concerns, I received prompt return calls, the…
I called in Bay Area Underpinning for foundation work. They were wonderful answering my many concerns, I received prompt return calls, the work was completed within an appropriate time frame, and the best thing he stayed with the estimate to the dollar. I loved the engineer, time frame, and minimal damage repair. I didn't know how my house was going to respond and even the marble and windows handled well. Unfortunately I didn't get the exact lift I wanted in the office even though they tried their hardest. My advice — call them when the problem first arises and the outcome and the house will lift with ease. I definitely recommend BAU. Because I live on a hill one pillar had to be covered – done. I also had a French drain installed to divert the water which was recommended. Thank you
citticat2
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Thank you Bay Area Underpinning for saving the day! I was in a challenging and prolonged situation since going into contract with EagleLift …
Thank you Bay Area Underpinning for saving the day! I was in a challenging and prolonged situation since going into contract with EagleLift for the stabilization/lift for my house. After a long permit process and continuously delayed start dates, I was informed that EagleLift had been acquired by Groundworks and I’d have to wait a few more month before any progress could happen. It was a deeply frustrating process but the EagleLift team was able to connect us with Bay Area Underpinning (another Groundworks company) who were able to take over and expedite the project. To my surprise, James T. from BAU reached out quickly and assigned a team to come to my house within a week! The team that ended up working on the house, specifically Ish, John and Abel were exceptional. They were diligent, knowledgable, friendly and deeply considerate. They are truly pros who knocked the project out in no time which was reassuring since I was nervous that this project was gonna stretch into the rainy season. My house feels so stable now (minimal cracks too) and the considerable slope is now practically nonexistent! Thanks a lot James T., Ish, John, Abel and the BAU team for taking really great care of us.
Anonymous Author
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My inspection was done by Richard he was very friendly and professional. He is very knowledgeable of the solutions BAU offer and put my…
My inspection was done by Richard he was very friendly and professional. He is very knowledgeable of the solutions BAU offer and put my mind at ease after his inspection was complete.
Eduardo Garay
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Brandon and his crew were wonderful to work with. We had pretty extensive movement in our foundation, and Brandon was knowledgeable and…
Brandon and his crew were wonderful to work with. We had pretty extensive movement in our foundation, and Brandon was knowledgeable and took the time to carefully explain all of our options and how each would look. He and his crew were communicative and professional. Our biggest fear was that our new kitchen granite counters would crack in the lifting, but Brandon and his crew were extremely mindful of the situation, taking extra care and nothing cracked. Thank you, Brandon!
Leslie N.
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I can’t praise Bay Area Underpinning enough! Everything from their support team, to their customer service, and the quality of their work…
I can’t praise Bay Area Underpinning enough! Everything from their support team, to their customer service, and the quality of their work has surpassed my expectations. I’ve used other foundations companies in the past and they weren’t great for many reasons – Bay Area Underpinning has none of the challenges I’ve experienced elsewhere, and massive positive upsides! Would highly recommend!
Dan Le Messurier
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Job went very well with good communication and done quickly. My crew was Devone and Gabe – very nice, knowledgeable and respectful. My…
Job went very well with good communication and done quickly. My crew was Devone and Gabe – very nice, knowledgeable and respectful. My house is now level and feels stonger to me.
Anonymous Author
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We just had Bay Area Underpinning work on our house and we are very impressed with this company. They were very professional and got the…
We just had Bay Area Underpinning work on our house and we are very impressed with this company. They were very professional and got the job done efficiently. They kept us informed on the status and let us know what to expect. Thank you, Gustavo, Isaiah and Ramon for a job well done!
S Shulenberger
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The crew was was fantastic! They finished faster than expected and they communicated with us daily to keep us informed along the way. We…
The crew was was fantastic! They finished faster than expected and they communicated with us daily to keep us informed along the way. We are very happy with the results and the professionalism of the staff.
Sasha Mendenhall
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A team of technician with management of Juan Gowez did an excellent job.Thanks
A team of technician with management of Juan Gowez did an excellent job.Thanks
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Lance and his team were here this morning for screw Jack adjustment they did an excellent job. Thank youTodd for arranging this excellent…
Lance and his team were here this morning for screw Jack adjustment they did an excellent job. Thank youTodd for arranging this excellent service!
marilyn kerr

Proudly Serving Northern California
Northern California trusts Bay Area Underpinning for reliable crawl space, foundation, and concrete repair services. Contact us for a free inspection!
Top Cities We Serve

Our Locations
2333 Courage Dr. Suite C
Fairfield, CA 94533
1161 N Fair Oaks Ave
Sunnyvale, CA 94089