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.

My husband and I are very happy that we turned to Evgeny. He proved to be very professional and…read morepunctual. He came and inspected our roof, as we were planning to install solar panels with Tesla. However, Tesla refused to provide a 100% offset and only offered 66%, claiming that there were issues with our roof. So we started looking for an engineer who could assess the real condition of the roof. Evgeny arrived right on time and did a thorough inspection. All the paperwork was ready the very next day. We 100% recommend him!

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 went with Alpha Structural for my seismic retrofit and was not disappointed. They were openly…read morecommunicative with me throughout the whole journey as I had a lot of questions along the way. The whole team was hands-on deck in going over any concerns I had while providing updates through every step of the process. On the day of the installations, supervisor Eny and his team of Ronaldo, Daniel, and Casimiro did a great quality job in less time than I thought it would take. I'd highly recommend this company for any foundational projects you may have! At least get into open communications with them and you'll learn a thing or two.

What a great company been doing business with Challman engineering since 2007 bill Challman in…read morestaff is always professional engineering plans are always done in timely manner when in doubt use challman engineering they will get the job no engineering company does it better

Challman Engineering is the very best when it comes to customer service…read more They really know their stuff. I can always count on their amazing staff to handle anything from a routine RFI all the way to a complete set of professional plans. Thank you Bill for always taking the time to explain things to me in a Windows-for-dummies version, lol. - You guys Rock !!

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 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.

Sam is a star! We have a 115 year old home and a few elements were starting to warp and crack, so…read morefigured it was time to assess what was going on. Sam gave us a play by play for nearly every visible piece of wood, drywall and foundational crack across the entire house. What was "scary" to us, turned out to be no big deal, but some other aspects we'd been less concerned with, were a bit more serious. We have our marching orders and feel much more confident in how to monitor our home over time and what to expect, and ask for, with contractors, moving forward. I'm truly grateful for Sam's wise counsel.

I found Mr. Mercado to be very professional and thorough for the structural engineering…read morerequirements for my project. Highly recommend his services............

Mr. Mercado, an Engineer, is not a straight forward honest person. When I contacted him he required…read morea contract to make a site visit, that was OK but not common with many Engineers. Once the assigned date arrived, he called at the last minute he called to cancel and then said he was too busy for a small job, then I pleaded that he had already used up a month of my time. So he assigned a new date to be called in September, I emailed in September and he said he be back in office next week, next week came and no contact, I emailed again and he said next week. On Wednesday of that week he emailed and said September 29th and was mainly concerned about his travel time. If you don't have a job near Newhall do not call this flakey, irresponsible, unprofessional, want to be Engineer.

Ilya Engineering responds to emails within minutes and answers their phones. Surprisingly, once an…read moreengineer is assigned to your project you can contact him/her directly. I also want to mention that my project took less time than originally thought. As a result I was invoiced for three hundred dollars less to reflect the actual time spent. This is definitely the firm to use if you want great customer service, plans that meet LADBS requirements and charges that reflect the actual time spent on your project.

Service requested: architect plans/structural engineering and permitting process. The design was…read morehow we wanted. A few hiccups along the way with the final permit but Sam acknowledged the mistake on his end and said he would sign off the edits in the revision phase of construction. I will give an updated review once that time comes. Quality: quality of work was good. Efficient in communication and dealing with a difficult city in a permitting process. Took about 6 months for the permits and the city kicked back for corrections 2x which is pretty standard. Value: felt his pricing was fair and reasonable Customer service: always responds to phone calls. Even after our final payment when we had questions or needed assistance. So not a "take your money" and we are done type of guy Overall impression: would use him in the future for any architectural or structural engineering jobs

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!

One of the best architectural and engineering company in LA. I have done a few projects with them…read more All the project I have done it's really convenient and nice open floor design, they know how to do it to be convenient to live in it house with all the features you need in the house and a lot of times you don't even think about it but it's there. The drawing is very detailed if you want to find the measurements, it's there in front of you compared to other architects that cannot find any measurements Another best thing is that they are always there every time you call them. You don't have to hustle to be in touch with them for any questions you have. I highly recommend them

I personally don't leave reviews, but I must this time because Top Dog Certified Home Inspections…read more(Jerry) provided truly top-notch service. From srart to finish, the inspection was extremely thorough, professional, and easy to understand. The inspection, Jerry, took time to explain every detail, answered all of my questions and provided a clear, well-organized report. Thanks to his deligience, all identified issues were properly addressed by the seller, which gave me complete peace of mind moving forward. If you are purchasing a home in SCV area, you absolutely must use Top Dog Certified Home Inspections. Highly recommended!!! I definitely will order another inspection of my house a few month later, within the home warranty period of 1 year.

Top Dog Certified Home Inspections was excellent to work with. Jerry, the owner, completed an…read moreindependent roof inspection as well as other testing on multiple occasions, and he was kind, punctual, professional, and easy to work with every time. Jerry's reports are incredibly thorough, with detailed explanations and helpful pictures that made everything easy to understand. He is extremely knowledgeable and took the time to clearly explain his findings, answer our questions, and make sure we understood both the big picture and the smaller details. What really stood out was Jerry's honesty and integrity. He is thoughtful, straightforward, and does careful, high-quality work. We really appreciated his expertise and would highly recommend Top Dog Certified Home Inspections.