1. Groundworks

    1. Groundworks

    0

    Ontario, CA

    Groundworks

    4.6 (84 reviews)
    Open 4:00 am - 8:00 pm
    Updated 3 months ago

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    10 minutes

    Response rate

    100%

    Services - Groundworks

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    Recommended Reviews - Groundworks

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    Reviews With Photos

    Injecting expanding foam under the sunken slab.
    David K.

    Groundworks responded immediately to my need to lift a sunken 20x6 foot section of a concrete slab that had cracked and drifted 1 inch laterally and sunk 2 inches along the long edge. Alan Dawber measured the amount of sink with specialized equipment and provided a reasonable estimate to inject expanding foam to lift and stabilize the problem areas. Crew of Oscar Gonzalez and Riccardo Vargas drilled about 20 injection holes and in 2 hours leveled and stabilized the slab. They were efficient, clean and expertly leveled uneven sections. Much cheaper than demo and pouring new concrete

    Underground supports
    liz f.

    Professional team, hard working, got the job done in record time. Rob, in sales did a great job with the inspections and letting me know what my options were. Left the work area tidy and did a phenomenal job, shout out to Brandon, Edgar & Oscar.

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    4 months ago

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    9 months ago

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    1 month ago

    It seems like a very professional company. I thought it was very pricey for what they do, but they seem to have a good reputation.

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    8 months ago

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    5 months ago

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    5 months ago

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    2 years ago

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    7 months ago

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    2 months ago

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    6 months ago

    Awesome job. Price fair Happy with results of uneven pool deck. Went a nice and beyond. Jacob and his crew well done

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    6 months ago

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    9 months ago

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    8 months ago

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    2 years ago

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    9 months ago

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    10 months ago

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    5 months ago

    Oscar and Ricardo did an unbelievable job and we highly recommend them for any of your foundation needs!

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    1 year ago

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    1 year ago

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    7 months ago

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    6 months ago

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    8 months ago

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    1 year ago

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    8 months ago

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    10 months ago

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    11 months ago

    Manuel and Santos from Groundworks were extremely polite, accommodating, quick and neat! Thanks for the great work!

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    11 months ago

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    10 months ago

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    1 year ago

    Excellent crew show up on time very clean organized very good safety excellent knowledge of work , will recommend to my friends and family

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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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    1 year ago

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    1 year ago

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    1 year ago

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    3 years ago

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    2 years ago

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    2 years ago

    Joe extremely professional and helpful. I highly recommend this company to anyone in need. I also highly recommend everyone request Joe!!!

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    3 years ago

    Business owner information

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    Donald M.

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    3 years ago

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    Donald M.

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    Page 1 of 3

    Ask the Community - Groundworks

    Review Highlights - Groundworks

    . Jim called me about the above situation, and I told him I had exhausted my budget for this project

    Mentioned in 18 reviews

    Read more highlights

    RoofTek & Waterproofing Systems - As seen in the photo some of our workers are finishing up a Light Weight Concrete Tile project in the city of Tustin.

    RoofTek & Waterproofing Systems

    (461 reviews)

    My Mom's mobile home in Santa Ana needed a new roof so I reached out to Rooftek as one of the…read morebidders on the project. David from the beginning was amazing! I appreciated his thoroughness and communication through the project. He was the only contractor to bring up the permit we had to get for my Mom's mobile home reroof, which said a lot about the quality they bring, and knowing what a reroof project entails in a mobile home park. I collected 3 bids and Rooftek's was the most competitive. He worked with me on some pricing due to an unforeseen hiccup on the project, which speaks volumes on not dumping an unanticipated cost all on the client. Thanks, David and Tomas! You both have been amazing to work with. I will keep in touch if any work comes in SD, and recommend you to others as well! Also, the reroof turned out beautiful! Thanks guys!

    Unfortunately, my experience with this company was frustrating due to poor communication and lack…read moreof follow through from the technician, Arturo. When Arturo came out to inspect the roof, he provided a verbal quote, but no written estimate was ever sent. Since my husband and I were in the process of making decisions based on contractor bids, I later reached out and specifically asked if a written quote could be provided. After waiting without receiving anything, I followed up with Arturo by text and was told that he would send the quote later that day. Four days passed, and I still did not receive the written estimate or any update. I sent another follow-up message and received no response at all. The only positive part of my experience was communicating with their staff, Abigail. The person responding to my texts, who I believe was Abigail, was responsive and helpful whenever I reached out to the company's main number. Unfortunately, despite her responsiveness, I still had difficulty getting the information I needed from the technician assigned to my project. I understand that delays can happen, but timely communication and following through on commitments are important. Based on my experience, I was disappointed by the lack of responsiveness and would encourage the company to improve communication between their technicians and potential customers.

    Professional Drainage Experts - Garden Grove, CA- The team at Professional Drainage Experts

    Professional Drainage Experts

    (128 reviews)

    We had Professional Drainage Experts design and install a drainage system to protect our home from…read morewater intrusion, and the entire experience was outstanding. From the beginning, Foster was responsive, professional, and incredibly patient. He took the time to thoroughly evaluate our property, answered every question we had, and provided a detailed plan that gave us complete confidence in moving forward. Once the project began, Julio and his crew were exceptional. Julio was on site every day, kept us informed throughout the process, and his attention to detail was second to none. Early in the project, he even identified a previously unknown leak on our property that could have easily gone unnoticed and made sure it was addressed. What stood out most was the level of care the entire team put into their work. They weren't just completing a project. They were making sure it was done correctly and built to protect our home for years to come. Thank you to Shanese, Foster, Julio, and the entire team at Professional Drainage Experts. We couldn't be happier with the results and would recommend them without hesitation.

    I just had Inspection with them today, not my first time with them, but I'm finally writing a…read morereview because they truly made a difference. It's rare to find a company that combines professionalism, responsiveness, and genuine client care this well, I am a solicited agent once through a lot of companies who didn't follow up with what they preached. They were on time, highly knowledgeable, and communicated everything with clarity and intention. Most importantly, they gave my clients peace of mind--which is invaluable in this process. I would confidently recommend them. Thank you I'm looking forward to using them soon.

    Groundworks - foundationrepair - Updated August 2026

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