1. Groundworks

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Sunnyvale, CA

Groundworks

4.1 (145 reviews)
Closed • 7:00 am - 8:00 pm

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Reviews are largely positive. People highlight professional and thorough inspections, clear project communication, and respectful and attentive crews.

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1 year ago

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1 year ago

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2 years ago

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2 years ago

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2 years ago

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2 years ago

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3 years ago

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2 years ago

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2 years ago

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2 years ago

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2 years ago

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2 years ago

Jason Dye was very helpful. Took a look at the foundation and answered all of my questions.

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2 years ago

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2 years ago

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3 years ago

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2 years ago

Scheduled an appointment and the inspector didn't show up or respond to messages. Unprofessional

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2 years ago

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2 years ago

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2 years ago

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2 years ago

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3 years ago

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3 years ago

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2 years ago

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Groundworks Inc.

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Page 4 of 4

Ask the Community - Groundworks

Did anyone use them for crawl space inspection?

They had to check my crawlspace for the foundation repair.

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Review Highlights - Groundworks

“Mark Brill from Bay Area Underpinning inspected my house very carefully and explained to me in detail.”

Mentioned in 14 reviews

Read more highlights

Foundation Solutions - Foundation Solutions offers repairs for all causes of foundation distress.

Foundation Solutions

(169 reviews)

Newhall

Foundation Solutions patched some cracking in our foundation and did an excellent job. Up front…read morethey gave the most accurate and realistic repair options available. They spent the time to explain how to regrade some of the areas around the foundation. They went above and beyond to make sure everything about the repair was done right, everything was fixed properly and we were very happy with it!

The foundation of my father's home in Concord was sinking, and we hired Foundation Solutions to…read moreremediate the issue. From start to finish, our experience was outstanding. This is an exceptionally well-managed company, and every step of the process was handled professionally and efficiently. We obtained three bids, and Foundation Solutions was by far the easiest and most competent company to work with. They were willing to work with us on their proposal, and throughout the entire project they demonstrated honesty, integrity, and a commitment to doing things the right way. They use Ram Jack which was minimally invasive. They truly run their organization like a well-oiled machine. Our project manager, Brett Everling, was excellent. He kept us informed every step of the way, from the project planning to the city permits and construction schedule. Communication was outstanding, and everything proceeded exactly as promised (and even a little ahead of schedule). For a project of this size and complexity, it's remarkable that everything went so smoothly. The Foundation Solutions crew was punctual, hardworking, and incredibly diligent. They hand-dug the excavation areas, which was no small task, and they treated the property with care. The amount of concrete that needed to be removed was kept to a minimum, and the concrete repairs afterward were done nicely. We did have one issue with the sprinkler system after it was reassembled, but Foundation Solutions responded quickly and resolved it without hesitation. That level of customer service reinforced that we had chosen the right company.

Golden Bay Foundation Builders - Financing Options with GreenSky

Golden Bay Foundation Builders

(43 reviews)

Golden Bay Foundation Builders has been excellent throughout my entire foundation repair and…read moreretrofit process. Our home required a few horizontal cracks patched, and a section of the foundation replaced. We also did a complete retrofit in the process. Darren the project manager has been very communicative throughout and just an overall joy to work with. Special mention to Kyndell who assisted with the inspection process to make sure everything passed. I would definitely recommend this company to any one looking for foundation work!

Seriously don't take the risk. I'll break this down into four categories for you to consider…read more 1. Knowledge of materials and methods of construction . 1 out of 5. Several issues related to the quality of the materials provided under the contract. Methods of construction were not standard nor acceptable. Not able to foresee problems in construction before they arise. 2. Honest and straightforwardness related to contract terms and full disclosure of documentation provided to city for permit approval. 1of 4 3. Preservation of property. IE the ability to minimize construction damage to unaffected property and structures. 1 of 5 . Several issues related to damage that could have been completely avoided if proper precautions and foresight were taken. 4. Quality control and on-site supervision. 0-5. Not nearly enough. Don't make the same mistakes I made. The project was supposed to be a few weeks and ended up being several months. Yes there were some change orders needed but nothing that justified the time overruns and quality control issues.

Foundation Repair of CA

Foundation Repair of CA

(423 reviews)

We were dealing with moisture issues in our crawlspace every rainy season, with water periodically…read moreseeping up through the floors and walls. We had a few folks out to assess the problem and Steve from Foundation Repair of CA was much clearer in communicating what the issue was than any of the others. He also offered us different options, giving us a straightforward assessment of the benefits and drawbacks of the different options. In the end, we went with drainage, encapsulation, and sump pump installation. Ernesto and his team (David, Juan, and Kelvin) came out for the installation and we were so impressed with the efficiency and quality of their work. Overall we're really happy we went with these guys, and are feeling so relieved that we don't have to worry about heavy rains anymore!

Foundation Repair of CA (FRC) is the most disreputable, dishonest company I've ever encountered. I…read morehired them because I didn't want to hire the lowest bidder for a change, and I regret it. I wouldn't sign the contract when told I'd have to do my own masonry repair until sales agent Jesse Marquez showed me FRC corporate material that indicated the brick facade would be removed with a masonry saw, in an approximate 2x2' square. That was false and deceptive advertising. This is what they did to my house. No masonry saw was used, only impact drills, which act as small jackhammers. FRC significantly damaged the entire brick facade, adjacent areas showed extensive cracking, entire areas had the brick facade knocked completely off the house, and the wall foundation was separated from the brick wall entirely. I told the work crew, headed by Luis, to stop using impact wrenches on the bricks immediately, then told them TWICE. Not only did they not stop, despite direct STOP work orders, they then took all of the bricks they'd destroyed, which legally is theft, called conveyance. Jesse Marquez explained that the bricks were so old they'd shattered. Luis returned the bricks after Jesse Marquez called, ignoring my several phone calls and texts. Jesse texted that the bricks were so old they'd shattered. Luis returned them, none were shattered, all were broken by the impact drills. Luis confirmed, texting that the bricks were "broken". They took the bricks to hide the damage. The day FRC received my Contractor's State Licensing Board complaint, FRC messaged that someone would come to assess the damage for repairs, and FRC would repair the masonry they'd destroyed. They first sent Robert Pagan, who acknowledged both that there were no masonry saw marks, and that the damage was excessive. According to FRC, Jesse stated Robert hadn't said this. It wasn't until I pointed out he'd said it while standing in front of a Ring camera did that lie die. FRC then sent Troy Knight, who acknowledged the same, and stated he was there to help, and would see that the masonry was repaired and more. I have several texts, voicemails and emails from FRC stating they will complete the job. They never did. FRC employee Mike Crites was sent to perform the repairs. He returned the following week with the wrong sized bricks in the wrong color, and proceeded to do more damage. This is the work that they did. FRC employee Mike Crites initially stated that he had retired as a mason, he later revised that statement, saying he'd only worked with pavers and concrete. The work performed was so substandard, FRC sent Jovincio, who was the only honest person in my entire dealings with FRC. Jovencio said he wasn't a mason, but had "some training". Jovencio replaced the work done by Mike Crites. This is Mike's effort, and Jovincio's replacement work. The work performed is clearly substandard and unacceptable. FRC acknowledged the workers sent lacked the skills, training and necessary certifications to perform masonry repairs. When I requested that FRC send a mason, and included photos of the work, FRC responded that they'd done me a favor; the workers sent were a courtesy. The very clause they'd ignored (and invalidated) by removing the bricks was cited. That they would do no more, leaving me with the bill for their damage. This is what they left. I obtained a second quote to repair the deficient masonry 'work' FRC workers had done - without a REQUIRED permit, with no mortar pins, odd-sized and broken bricks mortared in randomly, mortar lines that range from non-existent to more than an inch. Crites' also removed the brick facade foundation in several sections, replacing it with sloppy concrete. This is a code-violating 'repair' that is neither plumb nor square. The legitimate mason company from whom I obtained a repair quote updated the quote, which has nearly doubled BECAUSE of the 'repairs' performed by the unqualified FRC employees. FRC called this doing me a favor, saying the inept crew was sent as a 'courtesy'. This is not doing me a favor, this is not a courtesy, this is at best fraud. After signing the contract (under false pretenses), Jesse insisted I needed an additional pier ($3,155) because piers can no longer be placed under a window. A pier was placed under the window. Two other piers were not placed according to the county approved structural engineering ($1,850) diagram. Half the piers were installed in the wrong places, apparently according to Luis' whims. Yesterday Groundworks gave an estimate on properly placing those piers. That's how I learned that the improperly placed piers had lifted a joist completely off its foundation supports. This, too, will require additional expense to correct, before it damages my house - literally to the roof. I should have stuck with Groundworks. This is your cautionary tale - no one who values integrity, ESPECIALLY senior women, shouldn't hire FRC.

Avalon Structural - Avalon uses its excavator to install deep foundations through thick liquefiable layers of soil.

Avalon Structural

(51 reviews)

Avalon repaired foundation cracks and structurally enforced our foundation to competitive pricing…read more Great communication and professional, we'd hire them again.

Avalon Structural is a truly professional organization across the board - front office, inspectors,…read moreengineers, and on-site repair staff. If you have a foundation crack, save yourself the time and trouble and call Avalon Structural first. I got multiple estimates for my fairly extensive ~23' horizontal crack. I found there are three types of companies. The first type will do the minimum to chip out the rusted rebar, throw some fresh rebar in there, patch it up with a "band-aid", and charge you handsomely for a quick in-and-out job. The second will glance at your foundation and immediately tell you it has to be replaced, for an even more handsome price, of course. And then there is Avalon Structural. They will perform a comprehensive and highly structurally sound repair, removing all compromised material, charge a fair price, and stand behind their work with a strong warranty. If you visit their website, read the articles, and watch the videos explaining the right and wrong ways to perform foundation repairs, you will be well-equipped to choose the right company for your foundation job. Or, you can save the time and just call them. We couldn't be happier with our repair. The foundation looks great and feathers in perfectly with the undamaged foundation sections. The repair team was amazing and extremely respectful of our property. The city inspector signed off with zero issues, which speaks volumes about the quality of their work. A big thank you to Roger, MJ, and the entire Avalon Structural team!

Golden Gate Foundation Repair - Reinforcing interior floors and permanently stabilizing the foundation from further settlement.

Golden Gate Foundation Repair

(17 reviews)

Jonathan is an absolute gem. He is so down to earth, smart, kind, and you can tell he cares about…read morewhat he is doing and about the customers. He has over 19 years of experience, started from one of the first companies to do this well out in the bay and then branched out to his own company, where it's clear he wants to commit to doing a good job for the customers versus just making a large profit. We got a quote from another company who was running a ton of ads and it was very clear after meeting and talking to Jonathan that the other company was in it for the money and the biggest job possible. Jonathan came in, sat down, explained ALL the issues. Drew pictures for us to understand better since it was clear that we were over our heads(esp since we spoke with the other company that made it seem like our house was a danger to be living in) then he continued to explain all of the structural components of our house and how it helps with the safety/etc(NONE of this was done by the other well known/IG ad pushing company). He took his time, went over different options, gave us rough estimates for both. Suggested and gave a list of people he suggested for soil reports(Within less than an hour of meeting us). Broke down costs and said YOU SHOULD NOT HAVE YO PAY MORE THAN THIS and laughed as I added extra for what if's. He was such a lovely person and his quote was WAY less than the other company who only gave us one very expensive option and then didn't even bother to send a full estimate (groundworks) I immediately wanted to work with him right after and plan to. Highly suggest him for any of your foundation needs. Save yourself time, no need to get other quotes from other companies and just go with him:)

Golden Gate Foundation Repair is hands‑down the most reliable and professional team I've worked…read morewith. From the first inspection to the final walkthrough, their crew was punctual, transparent, and incredibly knowledgeable. They explained every step of the process in plain language, gave a fair and detailed estimate, and delivered exactly what they promised. The quality of their work shows, my home feels solid, level, and secure again. They treated the property with care, cleaned up thoroughly, and made the entire experience stress‑free. In an industry where trust really matters, Golden Gate Foundation Repair absolutely stands out. Highly recommend them to anyone in the Bay Area who needs honest experts and top‑tier craftsmanship. Way better than a "competitor" who came by and all they cared about was upselling, not knowing I have a background in foundation of course. Now, I know who to recommend to family and friends!

Groundworks - foundationrepair - Updated November 2026

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