Our house is built in the SW hills of Portland originally in 1938, with a 2003 addition. TerraFirma…read morewaterproofing product has been a significant update to a shoddy home remodel that the January ice storm exposed. After this unexpected remodel and damage was exposed we had a delay of several months to get on their schedule. When the project date arrived, they showed up on time, cleaned well after the demolition/addition of interior floors to allow drainage and a sump-pump. My original review (4 star due to not adjusting the cost when less product was used) they owned the mistake and recognized their communication gaps. I do appreciate that attention and feel more confident in the company. I look forward to many years of DRY basement/master bedroom living.

Living in a 30-year-old home for the past two decades we've had several phases of upgrades, but one…read morething has always been absent from a 10x10 slab on our back porch: a hot tub. So, this summer, we decided to move forward with the plan to be "soakin' for the holidays" three months away. The only thing standing in the way of that dream: the slab and its neighbor had sunk a few extra degrees, roughly three inches, at the far edge. We were going to need to shore up and permanently stabilize this slab if our hopes of the (3-ton when filled) tub were going to materialize. I made a quick call to Terra Firma and they had an estimator out within a few days. The pricing was reasonable and had the standard 50% up front 50% when complete-type contract. Casey arrived spot-on at 8:00am yesterday morning and began doing his magic (the process involves boring 1/2" holes through the slab, then using high pressure and heat to inject a molten expanding foam under the slab.) The foam is rated to support about 5 tons (10,000 pounds) per pound of foam material, and....100 pounds later that whole slab is back to following the prescribed slope perfectly, raising almost three inches on the sunken side. He did a great job and was a great rep for the company, explaining what little was left to explain. He kept me up on the status of the (4-hour) job as he went along--because our slabs had previously cracked, he had to gently lift it up in small sections so as to not have the sections separate further. Perfect job. 24 hours later and the patched holes have dried to almost-invisible (see photos). Unless you know what you're looking for, you can't even really see that repairs were made. Now I just need to fill in the pre-existing cracks with concrete patching caulk and we're ready to schedule the hot tub delivery! Yippee! Thanks Terra Firma!

They are a family owned business and the person who came out for the courtesy assessment was…read moreprofessional and highly knowledgeable. All of my interactions with their people (3) was always excellent. From Pat to John to Jean, all experts.

Good price, good communication. Prompt to get to work and worked very diligently until the job was…read morecompleted.

While the price did go up once the contractors arrived and did their own inspection (this was…read moreduring an active Portland flood period so leakage was far more noticeable than when sales person inspected), Avori and his team where wonderful! Avori was very proactive in addressing the severeness of our crawlspace leak. The Portland flooding and our non-functioning French drain made it really bad, allowing water to literally flood into our crawlspace! Avori and his team worked through the water and mud, installing new posts and beams, redirecting the water to a newly installed sump pump. The job took much longer than originally anticipated but was done well and our foundation is now much more stable. I really would have given five stars if the original quote caught everything but it wasn't flooding when the sales guy, John, came out so he didn't see the extent of our foundation issues. Avori was able to keep the increase to a minimum and we really appreciated all he did for us.

I had this company install a sump pump, all new French drains and vapor barrier in my home's crawl…read morespace due to standing water. Less than 2 years later they came for an annual inspection and their sales rep told me due to visible mold, he urged me to get encapsulation for $26,000! I nearly had a heart attack! He didn't even offer a discount on the work they already did which would all have to be redone. But he sure pushed to finance it. Such a sham! I had an official inspector evaluate the condition and promptly told me there was no need at all, minimal mold and good air temp. Beware of this company's sales tactics and pressure. Unfortunately my warranty is through them so I'm stuck. But you can make a better informed decision!

I haven't used Better Basements and Waterproofing yet, however, that's because they were honest…read moreduring the inspection and told me I didn't need to use them! I had a sketchy company do work on my crawlspace a few years ago and they've since fallen off the face of the earth. I was nervous to have a new company come out and 1) find something wrong and 2) try to sell me on things I didn't need. Michael H. with Better Basements and Waterproofing was honest - what was done by the former company wasn't up to his standards, however, it's fine for now and we can probably wait a few years before having any work done again. He also said we could use Better Basements and Waterproofing for sump pump maintenance (since we can't use the original company), however, he reassured me there isn't a binding yearly contract and I can just call if I'm interested (no need to agree this moment). I appreciated how honest and thorough he was in his inspection and in his explanations of everything. I've had a lot of companies over the years try to sell me on things I don't actually need. Michael didn't, and because of that, I actually will probably use Better Basements and Waterproofing in the future if I do need work done.

The company responded quickly and efficiently to my request to address the vibration caused by the…read moresump pump at my property. The technician provided a thorough assessment report with several options for me to consider, which I really appreciated. On the day of construction, the team completed the work quietly and professionally. I'm very glad to have found them and look forward to working with them as my long-term crawl space service provider.

Cliff has done great work for us! Our house backs up to a mountain. We had a flood and 4 feet by…read moretwenty yards of debris and mud piled up to the back of our house. We could not get anyone to even bid the job. Cliff and his team cleared the mountain of sludge and branches and did it at a great price. Cliff did some other waterproofing work for us and we got competitive bids and he was the best. Cliff is also a good person who you can trust. Highly recommend!

Very fair price, Cliff was professional on time and fix our water problem and when finished looked…read morelike he hadn't been here at all, very clean. If I know anyone else who has a water leak or water problem I will certainly recommend AWATERPROOFING&DRAINAGE INC.

I recently discovered water in my crawl space and contacted Ability Plus Drainage after finding…read morethem online. Within two days, they sent an inspector to assess the situation. He developed a clear plan to install a French drain to route the water to the existing drain leading out to the street, or, if that wasn't possible, to install a sump pump. The crew arrived as scheduled and worked extremely hard to resolve the issue. They were able to tie into the existing drain, which ultimately saved me $1,800. Everyone I dealt with was professional, courteous, and took great care to keep my home as clean as possible--especially impressive considering most of the work was done through a 4' x 4' closet floor opening located at a far end of the house. I highly recommend Ability Plus Drainage for any water-related problems you may be experiencing in your home. Sincerely, Dennis Cloutier Forest Grove, OR

Had Ability fix a small crack on a section of our foundation that was causing some water to seep…read moreinto our basement. They did a great job, efficient and thorough. Would hire them again in a heartbeat. No water has seeped in since.

Horrible work never on time and lazy. Never finishes the jobs and charges too much for such a poor…read morejob... would not recommend to my worst neighbor... horrible service...

I highly recomend this company! The team of 3 came to my home and added a french drain around the…read moreinterior perimeter of my crawl space so the intruding water would reach the drain. They also correctly installed a vapor barrier with sealed seams and tacked up to the foundation wall. Additionally - before this these wonderful guys clean out every single price, no matter how small, of left over building material. This is important because that material would of rotted in the moisture. They worked with me hand in hand. They did a neat, clean, great job! Thanks for the hard work guys

I want to commend TerraFirma for their expertise in repairing the cracks in my driveway. Zack, Ken,…read moreand Tim are rock stars. I would recommend them to anyone looking for this type of service. Very prompt and professional. I would also like to thank Heather for everything she does for TerraFirma. Thank you again Rick Bacon

From the owner: TerraFirma Foundation Systems is trusted by thousands of homeowners in the Northwest to keep their…read morehomes safe, dry and stable. Foundation repair, crawl space and basement waterproofing and concrete repair backed by warranties that give you peace of mind. Contact us today to schedule a free evaluation!