They responded quickly to my inquiry. They are very knowledgeable in what they do. We had a new…read morefrench drain installed. Worked was done in a day. Very professional.

Had a large, obtrusive puddle forming in my driveway every time it rained, which would stay there…read morefor several days during the winter, and which was also blocking the pathway to my back door. Paul at Allied worked with me over the course of four months figuring out the best way to deal with the problem. The solution was a channel drain that would lead to my existing gutter drainage system. Because of the topography of my existing driveway, I assumed that there would still be a fair amount of puddling even after the drain was installed and that I would just have to live with it. In the days just after the install however, it rained quite a bit, and the drain worked pretty much perfectly. The puddling has been reduced by about 95%, and the water that does collect is shallow enough to handle easily. After the rain stops, the remains evaporate after a few hours. The small lake that I used to have to walk around is gone. The guys who did the install were professional and very courteous and Paul was very knowledgeable and patient in response to my many, many questions and emails leading up to the install. Would definitely recommend Allied for any project, large or small.

All seasons was excellent to work with on a recent job. We had a complicated foundation situation…read morecaused by a plumbing blockage, not water table rising and they were the only company to take the time to properly understand the cause of the issue, what really needed to be fixed, and how they could help. That meant we got to the right fix for my needs vs a one size fits all solution that would've been more expensive and added risk of future failure if sump pumps failed. Their on site work was also professional and efficient, which I appreciated.

All Seasons was the way to go for us to get our crawlspace drainage problems fixed. All Seasons…read moreresponded quickly and the work was done quickly and efficiently and the problem was solved! We have gone through the wettest part of the winter and there is no longer any standing surface water under our house. The crew was very nice to have around and the exterior portion of the job was cleaned up each evening. Over the years, three out of four of our condo duplex units have had All Seasons fix drainage problems. We highly recommend these guys.

Bailey did a fantastic job inspecting my crawl space and designing a solution that fit my needs. I…read morereally appreciated his thorough evaluation, detailed explanations, and professionalism. I will keep TerraFirma in mind for future projects.

Unfortunately, I have to drop a negative review in the interest of warning other folks that their…read morework 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.

Misha and Slavik came to day to finish up--too cold last week and snow... did a great job slab…read morejacking my garage floor...some final touches to make it look better... Very satisfied.... Professional, competent, and left the garage cleaner than when they arrived!! Highly recommend

They never performed the promised work, and never gave me a refund. They are no longer accredited…read moreby the Better Business Bureau, have changed their location to Woodinville. I'm guessing new reviews are phony. In 2025, they likely performed promised work, but not now.

Eric and his crew are amazing! We're hired them for multiple jobs including a full french drain…read moresystem, trenches, water mitigation, garden bed dig-outs, etc. They do the work flawlessly at a great price. They are always punctual, respectable, and have a very high attention to detail. Eric used to work at Bodine Construction, where he got his experience. If you need any water mitigate away from your foundation, exterior piping, digging, trenching work done, this team is amazing. I would say Eric and his small crew are probably the highest quality team in the pacific northwest for this kind of work. Give him a try, you won't be disappointed.

Eric and his team did great work for me in home when I was in a time crunch. Eric visited to first…read moreview the work and then went above expectations. Eric kept me informed with any additional costs and still kept within budget and was affordable in services. You won't be disappointed with their quality of work. Thank you P4.

We had a railroad tie bulkhead that was failing . Trayton Ryan and their crew repaired it so it…read morewas upright and much more solid. Trayton was excellent in client communication and scheduling, their crew was polite, respectful of the property , hard working ,and efficient. This was an extensive job, lasting almost one month. Very pleased with this company, and definitely would recommend them- Trayton ,Ryan & crew deserve 5 stars!

I had these guys do some extensive work in my crawl space. I thought the price was more than fair,…read moreand looked great. They took great care in keeping everything clean while walking thru my house. I highly recommend them over the other companies to choose from.

excellent experience with insulation co - quick, affordable and excellent quality. Jo was very…read moreaccessible, informative and his team is stellar. Highly highly recommend

From the owner: We specialize in complete attic and crawl space services, including mold removal and remediation,…read morefull cleanouts, and insulation installation and removal. Our insulation options include blown-in, batt, cellulose, foam board, and Roxul (Rockwool) for attics, ceilings, walls, and crawl spaces. Our project expertise covers retrofit upgrades, remodels, additions, garages, basements, shops, and new construction. In addition to insulation, we also provide crawl space access door fabrication, heat duct sealing and repair, drill-and-fill insulation, air sealing, energy audits, and full cleanouts. Save money and save energy with available rebates! We work with PSE, PUD, and Cascade Natural Gas to help customers qualify for local utility incentives. Ask us how much you can qualify for — some homeowners receive up to $2,000 or more in rebates.

Thomas at Wu Construction was wonderful to work with. I was the buyer's agent on a transaction…read morewhere he had completed post repairs under the house for the seller. After closing, we asked him to take a look at a couple of posts that were touching the soil. Even though this was not part of the original scope of work, he went ahead and replaced those, along with a few others they found needed attention. That kind of good faith and professionalism was truly appreciated. Thank you, Thomas. Your integrity and willingness to go the extra mile did not go unnoticed. I would definitely reach out to them in the future.

Always pleased with their work. Have used them a couple of times over the years. They were…read moreknowledgable and professional.