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    Excavation

    Trench digging

    Foundation repair

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    3 years ago

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    TerraFirma

    TerraFirma

    4.6
    (47 reviews)

    ***Please note -- I updated my review from 1 to 5 stars. Terra Firma took the initiative to reach…read moreout and assess any next steps needed to correct the problem. Trust is 100% restored knowing that if problems come up they will take any action needed to follow up. I will also say that the work they originally did was actually to code, and we agreed that the moisture problems arose due to the nonstandard setup of my dehumidifier, NOT because of errors in Terra Firma's work. Thank you Terra Firma.*** Unfortunately, I have to drop a negative review in the interest of warning other folks that their work has gone downhill. I previously had an excellent experience with Terra Firma for management of a water problem in my crawlspace. I hired them without question again for my current property for management of moisture issues, and I didn't check their work upon completion as thoroughly as I should have. Unfortunately, about 1 - 2 months after completion of work, I discovered a large mushroom growing out of one of the structural posts in my crawl/basement. On closer inspection, I noticed that the dehumidifier water discharge line they installed was dumping less than a foot away from my foundation, corresponding to the exact spot the mushroom was growing. Moisture was the exact problem they were supposed to fix, but now they have created a severe structural problem secondary to moisture with the dehumidifier line dumping large quantities of water right next to my foundation. In other words, they created the exact issue they were purporting to fix by collecting the moisture and depositing it into my foundation. Once fruiting bodies are growing out of wood, this is an indicator that the wood is severely compromised and the fungus network has grown extensively. I now have a very expensive and serious problem to fix. I called to let them know about the problem, not sure if I will hear back from the coordinator/ the team who did the work. I am not sure if I would trust them to fix the issue after the damage they have caused, but I would accept financial remediation. If they take steps to make things right, I would update my review. I would not hire Terra Firma again for any crawlspace work, be it structural or moisture related because of the big problem they have caused. Again, just would like to warn others.

    Hired to correct sinking floor throughout the home, to the point doors couldn't close or would…read morestick and could feel significant change in the floor height while walking. TerraFirma sent over an estimator, then scheduled repairs. They were done in less than one working day and provided photos. They laid down paper to protect the floor as they were working. Due to another issue found, had to reschedule a second day to come out and install a supporting beam in the crawlspace. Different crew but were as professional and clean as the first. Folks in the office were helpful and responded quickly. Would hire again if needed.

    Groundworks

    Groundworks

    3.8
    (146 reviews)

    I was on the Steilacoom ferry and saw Ricardo C. and Zack M. help a stranded driver push his broken…read morecar quite a distance to clear the road so the ferry could be loaded. They saved the day and their efforts reflected well on your company. Well done. They deserve a pat on the back for being good guys.

    Awful company. I got work done a year ago and decided not to leave a review however I'm STILL…read morehaving issues, so here goes. Original plan was not followed. I had to get all the way to a supervisor to get the crew to stop working. They did in fact need to change the design but never reviewed it with me. A third design had to be done and they still put the sump pump right in front of my hot water heater, they did not pitch the one side enough so water sits there, left my driveway full of small and large metal shavings (and I have 2 young kids and 2 dogs who run in the backyard), did not clean up other materials, did not remove the dirt they dug up in the basement (told me I had to pay extra, you would think for 24k it'd be included. They also went to dig up my patio to run the water line, which could have been adjusted a few feet to not dig up an entire patio- again, no one would listen until I spoke to that one supervisor again, it was unreal. There were multiple times they were scheduled to come and never showed or showed on a different day then was scheduled, at least 4 times, and the crew had no idea. Fast forward to my yearly inspection, where he recommended I get a dehumidifier, and I was confused bc I paid to get one (that was one of my main things before I got talked into upgrading to a 24k job). They NEVER installed the dehumidifier and there has been new mold growth. They were not forthcoming with pics but sent a crew to spray, the crew had no idea what they were spraying for. They finally installed the dehumidifier and now I'm waiting for them to return to fix the encapsulation which is pulling apart, for the thousands of dollars it was, it was not worth it. The entire job was not worth it (3 columns designed to hold up large buildings, used to hold up my tiny house), encapsulation, dug around the edges, put in a sump pump, and now the dehumidifier. I would NOT recommend!!!!

    Groundworks

    Groundworks

    4.5
    (45 reviews)

    You will be satisfied with your experience!…read more We recently completed a large foundation project with Groundworks in Edmonds, WA -- a roughly $70,000 job involving permits, engineering reports, and significant structural work. Given the scope and importance of the project, I wanted to share a complete and thoughtful perspective. Overall Experience From intake through execution, the experience was strong. The consultation was detailed, the proposed solution was clearly explained, and the permitting and engineering process -- which took a couple of months -- was handled smoothly with consistent updates. The crew worked efficiently, and the quality of the foundation work itself was solid. The Consultation & Planning Our home sits on a steep slope, and an addition at the back had begun to settle. Groundworks sent out Jerry for the initial consultation, and he was excellent. Jerry was knowledgeable, energetic, and charismatic, and he took the time to clearly walk us through the problem, the proposed solutions, and what a job of this scale would realistically involve. He explained the engineering considerations in plain language, answered questions thoroughly, and helped us understand both the risks and the long-term benefits of doing the work properly. From an intake and planning standpoint, we felt confident moving forward. The Project The scope of work was extensive and involved foundation reinforcement along the entire back of our house, as well as drilling and post installation outside of the foundation to properly support a failing rear addition. Because much of this work needed to be performed beneath and adjacent to our back deck, deck access was required. We discussed these access needs ahead of time, and I even removed the top decking myself to reduce labor costs, based on our shared understanding of what would be necessary. A Miscommunication (and What Happened Next) While I was out of town during part of the work, a miscommunication occurred on site regarding what deck changes were permitted. As a result, the deck was dismantled more extensively than any of us had anticipated. This was understandably frustrating -- not because anyone did something wrong, but because the situation was genuinely complex and confusing. It was a conversation that perhaps should have been extremely clear about what was happening, but it wasn't -- and it wasn't the fault of any single party. Once the issue was identified and elevated, senior leadership stepped in, and this is where Groundworks truly distinguished itself. Leadership Response & Resolution We ultimately worked directly with Nathan Malsch, the General Manager, who was professional, attentive, and genuinely committed to making things right. Initially, we discussed a 50/50 split on replacement lumber for rebuilding the deck. Nathan went well beyond that agreement. Groundworks purchased more than enough lumber for a full deck rebuild, had it delivered directly to our home, and even provided a Milwaukee impact driver/screwgun set along with Milwaukee bits to help with reconstruction! That level of ownership was frankly unexpected and deeply appreciated. It wasn't just about compensation -- it was about leadership taking responsibility and ensuring we felt supported after a frustrating situation. Final Takeaway Large foundation projects are complex. What ultimately matters is how a company responds when challenges arise. Based on the quality of the work, the professionalism shown during consultation, and the accountability demonstrated by senior leadership, I feel confident recommending Groundworks. We ultimately walked away satisfied and appreciative of the effort made to ensure we were truly taken care of.

    Tucker was very professional, pleasant, kindly answering our questions and spent 2.5 hours…read moreevaluating our house before giving us a quote. I would recommend

    Cobalt Geosciences - masonry_concrete - Updated July 2026

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