Chris came to advise and measure for a drainage system and was incredibly knowledgeable and…read morethoughtful about the project. His expertise and experience is valuable to us. In addition, we have to commend him for previous work. He is completed on our property on foundation work, including a retrofit. We will always have Chris come to the rescue. Way to go Chris.

I am so grateful to have crossed paths with Erinn and Kylie from Alpha Structural. They are…read morecurrently working one listing and the one today Erinn showed up and was so honest and straight forward with the property representatives that Im sure they too will hire him! Erinn is thorough, humble and extremely knowledgable. I am so appreciative for his help and expertise. I have only incredible things to say!!!! Thank You for showing up and helping! You guys are the best!!! Jennifer

Stop reading reviews. Art and Extreme Home Addition is the right choice when it comes to your next…read moreremodel. We needed an architect and a remodel expert. Art handled the entire project from securing permits, connecting us with an architect and executing the project with diligence and great results. Santos and Carlos were instrumental as well. Thank you for everything, Art! We hope to work with you in the future!

Can't say enough great things about Art and his group. From the very idea of redoing our bathroom,…read morewe were given thoughtfully considered insight into getting the best quality while also stretching our money as far as possible. Even though I know my wife and I were incredibly frustrating in how we changed some details mid-stream, everyone on the team was helpful, communicative, and always in great spirit to accomplish our dream bathroom. What more is there to say? There's too much money, too much unknown when you're renovating your house, and trust is the most valuable asset you can have in a contractor. Trust that they are working doggedly for you. Trust that the work is great. Trust you are getting way more than your money's worth. Well, we trust Art and Extreme Home Addition intrinsically. You should too.

I am the president of my HOA and was frantically looking for a structural engineer about 5 months…read moreago to review our blueprints for a homeowner's project. I looked through yelp and even left numerous msgs for various engineers. All of which were either uninterested or charged ridiculous fees. Arsen was recommended to me by a friend and he was perfect for the job. His expertise and knowledge helped us make the very important decision to not remove a structural wall. I recently just hired him again for another project which was in the works since October of last year. After being totally taken advantage of by another engineer, Arsen came by and offered more advise with patience, a detailed explanation regarding the integrity of our building and leveling of another homeowners floors and offered a great report to have on file. He is honest, sincere and above all has a great personality. I would recommend him over and over again!

I have worked on multiple projects with Structural AF. They have always been professional, easy to…read morecommunicate with, quick, and thorough. They are fantastic!

I found STEN engineering on google! Eugene returned my phone call he was able to provide…read moreinformation on an SOR request report for a project he delivered right away and was able to provide a honest price and work. I recommend doing business with this company 5 stars

We had multiple structural issues with our driveway gate that was poorly installed by a licensed…read morecontractor. We hired Evgeny to provide his expert engineering advice. He was not only highly professional but extremely helpful in guiding us how to resolve the issue. He even included a CAD design for us to present to the contractor for a reasonable price. We highly recommend Evgeny and would hire him again for engineering needs.

I'm building a hillside swimming pool...it's a night mare process…read more Needs...Soil Reports, Structural Calculations, Piles, Structural Observations, City Spacial Inspections...many more to come. Kobe engineering made the job process quicker and sufficient and very affordable. I highly recommend Kobe's Specialties. My very experienced my pool builder (Yaku Pool Builder) could be able to process building my pool so smoothly with Kobe's high quality Customer Service. I thank specifically Daniel who took all my text messages, phone calls & emails with in timely manners & excellent services.

I can't recommend this team highly enough. I'm building a new home with several complex challenges,…read moreand they worked through every detail with me to ensure city approval. They never nickel-and-dimed me and were genuinely committed to bringing the vision to life. This team truly cares about both the project and the people behind it.

I worked with Prostruct Engineering on a residential interior wall removal project. I was very…read morepleased with their professionalism and services. The project manager, Nithin and project success associate, Joshua were always in the loop of communication. In the process, Nithin was very responsive to answer questions and make necessary drawing changes according to the requests. The project was done in a timely manner with reasonable cost. Overall I was impressed with their performance, quality, schedule and cost!

We had a unique issue which required immediate attention. ProStruct was the only licensed…read morestructural engineering firm that responded quickly and that was able to perform the services in the timeframe we needed. Irvin and his colleagues took the time to walked us through the steps under difficult communication circumstances. We paid for the services but unfortunately, we were ultimately unable to use their services having to cancel 2 hours before they were going to execute the agreement. They were gracious enough to fully refund our payment. They were very understanding, and we will work with them in the future if the need arises.

We had a major renovation in my condominium complex in Hermosa Beach In 2024/25. We were undergoing…read morea $3 million renovation when it was discovered that we had serious structural issues in the rear portion of our building. Our contractor recommended KCE/Matrix engineering company with whom he had lengthy experience. This countermanded the advice of our architect, who wanted to choose his own architect named YT Engineering in Palos Verdes. It turned out that YT engineering didn't fully understand the issue, & proposed that we'd have to go through a seismic retrofit process in order to secure a permit. We decided to call in KCE/Matrix engineering and they provided a rather simple process to solve the problem and not over complicate the issue. Not only did it solve the specific structural engineering issue we encountered, but additionally, KCE/matrix engineering calculations, and felt that we might be able to solve some other seismic issues at a minimal cost based upon their findings. Their extra work saved us untold amounts of money, complications, time and future frustrations!!! This Isn't an exaggeration, it's a fact! As impressed as I was with the work that they did, it was backed up by the tone, the conversations and the professionalism with which this organization operated. I give particular credit to David Paiva at KCE/Matrix engineering: he was a pleasure to deal with, he was always calm, measured and followed through with his promises. Everything I asked, for within reason he provided without any problems or headaches. David Paiva and KCE/Matrix engineering were a pleasure to work with. If you ever have any questions about my review, please feel free to call me at 310-714-5930. My name is Robert.

My large condo complex has worked with KCE Matrix for decades and NEVER have we had a problem…read more They have been totally professional, knowledgeable, and I would recommend them to all. They are always "on our side"

I found Sam through Yelp. At first, we were both not sure whether we will work together because he…read morelives more than 20 miles away from where I live, and I'm the type of person who is always skeptical about what I read on the internet. But now I'm very happy that Sam decided to take on the job and develop the structural calculations and drawings for removing a load bearing and shear wall at my Condo. The Project started in September 2025 with initial submittal of permit application package to the City. It went into construction about four (4) weeks ago and was successfully completed today (5/8). During the process, we developed trust for each other. I contacted Sam numerous times for questions, problems and consultations and he was always responsive. He and my architect friend worked together to develop the initial design but had to modify it to overcome a major obstacle that came up during the construction. He came over for construction observations and gave instructions to the contractor how to strap the beams together for maintaining structural integrity of loading and shearing. His fees were much lower than another builder whom I also got a bid from, and his approach to things was much simpler and yet conservative to that from the other firm. I told Sam, whether it is good or bad, I don't usually do reviews for others. But for him, I will do one. I'm thankful to have a great team of Sam (the engineer), my architect friend, and excellent construction crew to help me complete this project.

I am a homeowner and have only good things to say about working with Sam. He was recommended by…read moreour architect to do the structural drawings and observations for our renovation project. Sam is easy to work with, responsive and explains things very well - even to someone like me who doesn't have an engineering or construction background. He gave me a time frame that he needed to complete the drawings and stuck to it, which I really appreciate. He communicated well with my contractor and considered different options for how to approach the structural challenges. I've worked with other structural engineers over the years, and I found Sam to be the most professional. I've had engineers disappear mid-project, deliver weeks/months after they said they would, and/or bill more than initially agreed upon - not Sam. He does what he says. Definitely would use him again.