very professional and reliable from the office person to the estimator and to the lead man,…read moreSchyler. All were very good and the job was completed and on time.

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!

Greg is the best! We have now used Eleven Engineering for two major potential issues (both…read moreregarding foundations), once when we were the sellers of a home, and just recently as potential buyers. Greg is thorough, straightforward, and truly a kind and honest person. I would highly recommend them for any structural engineering issue! Feel free to message me for details!

From the owner: Eleven Engineering & Design, LLC (11ED) is a structural engineering and architectural consulting…read morefirm serving the Western United States, which specializes in the public and private realm of Government, Healthcare, Educational, and Commercial facilities.

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.