Horrible place they really took advantage of an old couple, we just wanted a quality job done and…read moreall we got was . Very poor quality work, horrible customer service and overpriced. I do not recommend. They took advantage of us and lied.

From the owner: Epsilon Geotechnical & Material specializes in providing geotechnical, environmental, construction…read morematerials testing, and engineering solutions. Using our certified equipment, we are able to perform concrete slump tests and gather field densities for various construction materials. Thanks to our in-house lab, we are able to insource concrete strength testing as well as soil, AB, and asphalt analysis, providing curated, timely results at competitive prices.

I had a great experience with my kitchen renovation. I couldn't be happier with the final resultsread more

We recently had Bayside Home improvements do our kitchen counters, and install a new gas fireplace…read more The quality of the work, people, and products were outstanding. Paul our main contact was one of the best I have had in the Phoenix metro area. The communications, and timeliness were perfect. The crews that were assigned were very conscientious, and did beautiful wok, I couldn't be happier with the job. Do your self a favor, and hire this company.

Todd was very easy to work with and explained everything we needed to know about a home we were…read morepurchasing in Scottsdale. We needed a very short turnaround and Todd, made everything go smoothly so we could evaluate the condition of a home we had under contract and he delivered a report in less than 24 hours. If your looking for a structural engineer, Todd is your guy!

Todd is an absolute godsend and I couldn't be more grateful for him. I called him this morning at…read more8AM and received a callback within 45 min. I am selling my home and my buyers inspection report caught a cracked truss that they wanted reviewed. I'm in a tight timeline and Todd was able to make it out same day. He was quick, efficient and totally worth the cost/trustworthy. Thank you again, Todd!

We recently hired Kessler Engineers to complete our condominium's reserve study, and the experience…read moreexceeded every expectation. From the very beginning, their team demonstrated an impressive depth of expertise, a strong understanding of community association needs, and a meticulous approach to evaluating our property's long‑term capital requirements. Throughout the process, communication was clear, timely, and transparent. Their engineers asked thoughtful questions, conducted a comprehensive site inspection, and took the time to understand the unique challenges and priorities of our community. The final reserve study was not only detailed and well‑organized, but also presented in a way that made complex information easy for both the board and homeowners to understand. The highlight of the entire engagement was the presentation they delivered to our community. It was truly outstanding--professional, polished, and extremely informative. Their ability to break down technical findings into practical, actionable insights helped everyone feel confident about the long‑term planning process. Dan responded to questions with clarity and patience, ensuring that every homeowner walked away with a full understanding of the reserve study, the funding options, and the reasoning behind their recommendations. Overall, this company provided top‑tier service from start to finish. Their expertise, professionalism, and commitment to excellence made a significant positive impact on our community. We highly recommend them to any association seeking a reliable and highly qualified engineering firm for a reserve study or similar project.

Cruterium - Kessker Engineers work with our Canyon Trails HOA 1&2 in several different areas…read more They help us with the measurement our walls, the include the walls conditions, that help us get the proper measurement so we could get a real proposal from our painters. The also did our Reserve study, which was really needed and help us make sound and educated decision for our HOA home owners. Thank you Criterium-Kessler Engineers!! Lookin forward to working with you again. Bill Biggs Canyon Trails HOA 1 & 2 Board Member

In one word - AMAZING!…read more We needed an engineer to tell us if we could remove a large wall in a house we just purchased. John at Ridgeline Engineering was extremely prompt, knowledgeable, thorough, and accommodating to our needs. He was always available to discuss changes and options for what we needed. The cost was extremely competitive and we received the information in a timely manner. I would recommend Ridgeline to anyone who needs a structural engineer.

Horrible. At the risk of exaggerating because I'm so angry I'd say a crook. Got together. Seemed…read morenice. Lives in the neighborhood. Paid him, happily, to look at the site where we are building a new home. Gave him retainer money. He did nothing. Weeks and weeks went buy with me asking periodically about progress. He said he was busy and had not done anything. I asked for my money back and he said he'd be happy to refund it. Never did. Buyer be ware... BT

I was very happy with how all my questions were throughly answered…read more I am very happy. He got back to me in a very timely manner.

Chris is professional, communicative and knowledgeable. I had to hire someone to help my parents…read morewho live in Arizona while I am in Michigan. Chris was so easy to work with and gave me the confidence that my parents were going to be well taken care of. My mom can't stop talking about how thorough Rich was when he came to her house. Highly recommend this company.

Dave was super nice when we first starting working with him. after he got his money it went south…read morefast. he was supposed to do a grading and drainage plan for our new house. It took almost a year to get the plan approved and we had to threaten to get a lawyer for him to complete it. The county reviewer actually called me direct to console me about what he was not willing to change on the plans after they sent him a sample of what it needed to look like. he continued to claim he was right and the county was wrong. I even called other engineers and they did not under stand why it could not be fixed to the counties liking. Being in construction for 40 years I know that the grade around the house should not be 4" higher than the finish floor but he would not listen. I beg you all to look for another engineer and not waste your time here. you will be sorry.would give zero stars if I could.

These guys were great. After waiting for over a month for other engineering firms to commit to the…read moreengineering work, I gave them a call. They responded promptly and even though I didn't have a really big job, they came out immediately, gave me a reasonable estimate and finished the work a week early. I wouldn't hesitate to use them again.

WILL RENT AGAIN! Our experience with Blackstone has been very positive! The house was…read morecompletely remodeled when we moved in and the owner has been great to work with. It's nice to have a house that is in good condition when you move in, unlike a lot of houses in Phoenix that we viewed prior to renting from Blackstone.

DO NOT...I REPEAT DO NOT RENT ANY PROPERTY FROM THIS COMPANY, they are SLUM lords, they do not care…read moreabout their tenants they ONLY concern is collecting rent monies without making repairs. For example my air conditioning unit went out on Saturday when the degrees outside was a scorching 115, as of now my air is still out and its Monday. Rent at your own risk.