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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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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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We had an amazing service experience from David and Rico of Bay Area Underpinning. David and Rico were very professional, super nice, and…
We had an amazing service experience from David and Rico of Bay Area Underpinning. David and Rico were very professional, super nice, and worked hard on leveling my floor. They arrived on time after giving me a call earlier to let me know they are on the way. They put on shoe covers to make sure my floor is protected. They patiently listened to my inputs and addressed my concerns with competence and great care. And they would not leave until all the uneven floor areas are fixed to my satisfaction. This team deserves my 5 star rating.
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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
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I recently scheduled an inspection after concerns around my foundation and worked with Jim Rivera on my home. Jim was super helpful and…
I recently scheduled an inspection after concerns around my foundation and worked with Jim Rivera on my home. Jim was super helpful and knowledgeable in assessing the severity of my foundation issues, while also assessing other parts of the home that might be contributing to potential damage in the future. I was surprised how helpful he was in helping me understand different scenarios, planning for near-term/long term fixes, and putting my mind at ease over the foundation issues. I'd definitely recommend working with Jim and his team!
Zach C.
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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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Bay Area Underpinning is OUTSTANDING!! Cody, Andrew, Francisco, David and their underpinning and concrete teams did exceptional work…
Bay Area Underpinning is OUTSTANDING!! Cody, Andrew, Francisco, David and their underpinning and concrete teams did exceptional work installing underpinnings to stabilize our house, then replacing the concrete patio that had to be removed to do the stabilization. Everyone on the teams were efficient, courteous, highly skilled, and thorough. I cannot recommend Bay Area Underpinning highly enough- through each step of the process, from the initial assessment and work quote, to the work and follow-up itself, the staff and crews of Bay Area Underpinning ensured that I was informed, reassured, and we’ll take care of. They were thoughtful about doing their work efficiently and cleaning up after the work was completed. I cannot recommend them highly enough!
Julie Fong
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I recommend Bay Area Underpinning for an important reason: honesty. After careful inspection, their agent, Richard, told me the truth,…
I recommend Bay Area Underpinning for an important reason: honesty. After careful inspection, their agent, Richard, told me the truth, which was that my crawlspace was fine, that I had no problem with moisture or settling. And then he took the time to show me why. He could have tried to sell me on doing a lot of work, but he didn't. This kind of honesty is impressive! Call Bay Area Underpinning to inspect your crawlspace. You can trust them. If they say it needs work, hire them to do it. I am almost sorry I couldn't!
Randy Cook
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Jim Rivera did a terrific job. His knowledge and professionalism really set him apart from the competition. His analysis was concise and…
Jim Rivera did a terrific job. His knowledge and professionalism really set him apart from the competition. His analysis was concise and really made the situation clear. Can't say enough good things about the quality service he provides.
Richard W.
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We had a fantastic experience with Bay Area Underpinning, lifting our foundation four and a half inches of our old 1958 Napa house! After…
We had a fantastic experience with Bay Area Underpinning, lifting our foundation four and a half inches of our old 1958 Napa house! After careful review of several contractors, we chose Bay Area Underpinning and so glad we did! The entire process was smooth from the sales engineer estimate to the completion of the job, the communication was outstanding all along from day to day and ourblift was a big job with a full week of labor intensive work. I especially want to thank Foreman Cody Summers, Co-Foreman Ken Hamlin, and Installer Nikolas Klein for their outstanding work and customer service! They are the best and ensured that I was happy with the progress and completely satisfied. I also want to thank Superintendent Kevin Gaeden for his outstanding communication! My wife and I are completely satisfied and happy with the outcome! It was a great choice with great value after the job was complete! We would hire Bay Area Underpinning all over again! Thank you very much for a job well done!
Jason Galbraith
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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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My friend recommended this company and their tech Jason Dye to me, so I requested a foundation inspection/estimate. Jason is very…
My friend recommended this company and their tech Jason Dye to me, so I requested a foundation inspection/estimate. Jason is very responsive. He would text me and let me know the ETA when he was on the way. After he arrived, he checked everything very carefully. He gave me some good suggestions to help maintain foundation in a good shape, and even helped me set up the extension pipes from gutter downspouts. I enjoyed our communication and is very happy with his service. And he is super friendly to my dog!
Ying W.
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We just had our home's foundation lifted and leveled by Bay Area Underpinning. Raul and his team did an awesome job. Great communication,…
We just had our home's foundation lifted and leveled by Bay Area Underpinning. Raul and his team did an awesome job. Great communication, respectful, hard working, clean, very professional and competent! Raul really knows what he is doing! Everyone I have dealt with in the company have been great to work with! I highly recommend Bay Area Underpinning (Sunnyvale) for your foundation issues!
Dana M.
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Review for Tyler and Luis who came and knocked out the piers and slab leveling in short order. Super professional, clean, accommodating,…
Review for Tyler and Luis who came and knocked out the piers and slab leveling in short order. Super professional, clean, accommodating, showed up and left on-time and stayed on task so much so that they were able to shave a day off the assumed schedule. Was a pleasure to work with these guys.
Bobby Roumiguiere
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I will sleep much better tonight. I noticed a crack in my foundation and called Bay Area Underpinning. Hunter came out and walked the…
I will sleep much better tonight. I noticed a crack in my foundation and called Bay Area Underpinning. Hunter came out and walked the entire property and went underneath. He identified one other issue that I knew about besides the crack and told me they could fix that too. I had no idea you call structural engineers for chimneys. His quote was fair to me and you can't beat the warranty. Today Jesus Villagomes and Erick Baez came out and fixed the crack, they also looked around underneath and reassured me AGAIN that my house was in good shape. Because I caught it early they were able to fill the crack and then add a carbon fiber exposy seal. They also sealed the crack from the outside, even though they had already filled it in under the house. They were professional, answered all my questions, no matter how many and honestly were just pleasant to work with. They also explained my maintenance plan so I knew what to expect. I would absolutely recommend this entire team, to stay professionally kind in high heat is amazing.
Lisa E.
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Our house is 85 years old and has some cracking on the stucco, so I called for a free inspection to see if the problems were something we…
Our house is 85 years old and has some cracking on the stucco, so I called for a free inspection to see if the problems were something we need to be concerned about. Daniel, our inspector, was prompt and friendly and explained everything he was doing and seeing as he took measurements and inspected the foundations. He said that while there are things we can do for earthquake retrofitting (and he did recommend a separate company for that if we wanted to do it) our problems were mostly cosmetic and nothing to worry about. He also took his measurements to be scanned in at his office and kept on file so that we can have him back out for another inspection in the future to compare, again, purely at our discretion. He was respectful, friendly, and straightforward and answered all of my questions. I'd definitely recommend them.
Harmony Obeso
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Working with BayArea Underpinning was a great experience. Ron Hobbs was professional and so easy to work with. Their crew especially Mike…
Working with BayArea Underpinning was a great experience. Ron Hobbs was professional and so easy to work with. Their crew especially Mike was detailed and on time. Very honest company. They rebated me back money on something that I would have known about but Mike was honest enough to tell me. Very impressed. Call them they did a great job!
Lorraine Scharff
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Within a few months of buying our first home, we noticed some troubling signs: bedroom doors swinging open or closed on their own,…
Within a few months of buying our first home, we noticed some troubling signs: bedroom doors swinging open or closed on their own, “bubbles” and creaks in sections of the newly renovated floors, and significant cracks splitting the concrete in our garage. Although two general inspectors assured us that our house was level, we reached out to Bay Area Underpinning (BAU) for a more detailed assessment—and we're so glad we did! Inspector Christopher Murray conducted a meticulous inspection with radar equipment. While technically our house was level, Christopher uncovered that our foundation was sinking by inches in multiple areas, explaining the issues we were experiencing. Though the news and associated repair cost were a bit daunting as new homeowners, Christopher’s knowledge, professionalism, and clear answers to all our questions reassured us that we were in good hands. With confidence, we decided to proceed with BAU for the repair. Fredy Mora and his crew did exceptional work with the demo of the old concrete slabs and the prep for lifting, working quickly and efficiently. Fredy’s positive attitude made the process smooth, and his team was thorough and dedicated from start to finish. A special thank you to our lift project manager, Kevin Gaeden. Kevin was an outstanding communicator, keeping us fully informed and addressing every question promptly. His attentiveness made a huge difference throughout the project, and we felt reassured every step of the way. Esteban Ibarra, a crewmember on the lift team, also did superb work, handling the hands-on details with skill and care. Both Kevin and Esteban even went above and beyond, taking time to fix a jammed bedroom door that had shifted with the house lift. While foundation issues are never easy, we couldn’t have asked for a better team. We’re incredibly grateful to Bay Area Underpinning for their expertise, professionalism, and exceptional service. Thank you, BAU!
Anonymous Author
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Inspector Jason Dye came out and gave an honest, efficient and informative inspection. Friendly and knowledgeable
Inspector Jason Dye came out and gave an honest, efficient and informative inspection. Friendly and knowledgeable
Evan Doxtad
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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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Last week, my car cut off while exiting the highway in Dixon, and I was stranded in a dangerous spot. Fortunately, your employees who were…
Last week, my car cut off while exiting the highway in Dixon, and I was stranded in a dangerous spot. Fortunately, your employees who were driving a Bay Area Underpinning truck, Erick Baez, Jesus Vallegomez, and Wesley Almaza stopped to help. They worked hard to try and troubleshoot my car and even pushed it out of the street to a nearby gas station while I waited for AAA. Their professionalism, kindness, and respect were incredible. I'm so grateful for their assistance, especially since I’m a woman who was alone in an unfamiliar area in the evening. Thank you, gentlemen!
Desiree Roberts
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Superindentent Juan Gomez was very professional and quick to fix our problem. He educated us on how to find a solution and why these things …
Superindentent Juan Gomez was very professional and quick to fix our problem. He educated us on how to find a solution and why these things happen.
Dominic Benitez

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