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3 Years In Business

Company Details

  • Verified Licenses

Contact

Serving You Locally
Fairfield, CA 94533
https://www.groundworks.com/

Hours

  • Mon: 4:00 AM - 8:00 PM
  • Tue: 4:00 AM - 8:00 PM
  • Wed: 4:00 AM - 8:00 PM
  • Thu: 4:00 AM - 8:00 PM
  • Fri: 4:00 AM - 8:00 PM
  • Sat: 5:00 AM - 8:00 PM
  • Sun: 7:00 AM - 8:00 PM
View All Details & Credentials

Service Details

  • Residential Work
  • Commercial Work
  • Small Jobs Welcome

Areas of Expertise

  • Foundation Repair
  • Crawlspace Repair
  • Concrete Lifting
View All Offerings and Cities Served

Cost Information

  • Free Estimates
  • Warranty Offered
  • Credit Cards Accepted

Ratings

4.8
17 Verified Reviews
  • 5
    16
  • 4
    0
  • 3
    0
  • 2
    0
  • 1
    1

Highly rated for

  • Overall Rating
  • Customer Service
  • Quality
Showing 1-10 of 17 results
5.0 Gayle J. Fair Oaks, CA
3/19/2026

Anthony and. Runs from the Poly Crew were fantastic.

5.0 Karen N. Elk Grove, CA
2/3/2026

Yes and when he was done it looked super fantastic!!

5.0 Kristina S.
12/26/2025

Juan G was the Forman and Mike was our Piering crew. They were able to put in 7 jacks and complete the job within 1 week! I really appreciated how Juan kept me informed about the job and how they always left their work areas clean and tidy.

5.0 Kristina S. Wilton, CA
12/26/2025

Groundwork’s did a great job on our house. Luis G was an amazing Forman with Ken H and Mark P all waterproofed under our house. They worked quickly, efficiently and thoroughly left all areas in tact and clean. Luis communicated very clearly about the all aspects of the job until it was completed.

1.0 Dominick M. Berkeley, CA
6/10/2025

We hired Groundworks CA (fka Bay Area Underpinning) for what we understood was a full foundation repair. We paid $42K. They only worked on the rear and never informed us that the front wasn’t included. Months later, while selling our home, a third-party engineer found $189K in unaddressed issues at the front. We were blindsided, lost our buyer, and suffered major financial and emotional stress. Groundworks later admitted they hadn’t measured the front. Their rushed “final inspection” months later felt reactive, not professional. When asked for a partial refund, they refused. We feel misled and abandoned. Avoid.

5.0 Sam _. Crockett, CA
5/21/2025

Juanpablo H. & Alex C. provided excellent service. Their knowledge and transparency gave me all the confidence that they?re the best persons for the job. Transparency is a major trust driver for me, and their ability to have frank and informative discussion earned my loyalty. Thank you both!

5.0 Chris N. Vallejo, CA
11/21/2024

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.

5.0 Joseph V. Orinda, CA
11/6/2024

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.

5.0 Bob A. Sacramento, CA
11/3/2024

The permiting process took a long time, but that's not their fault. The cost was very high but competitive with another contractor.

5.0 Shivan B. Vallejo, CA
10/30/2024

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!

Photos

Groundworks
6
Crawl Space
5
Concrete
5
Foundation
4
Basement

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