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 !!

We had some concerns about the structural integrity of our house, Jim came out to assess the…read moreproperty. He answered all of our questions and addressed all of our concerns. He was thorough and professional yet very down to earth.

In LA county it is to say not easy to get a building permit. As a homeowner builder, we were told…read moreit was near impossible. So how do you thank someone who went not the extra mile more like 100 miles to get our building permit for our home. I guess this way to tell of Jim and Jose being there every step of the way until the end to make sure we got it. We definitely were not his richest or biggest, but he acted like we were. THERE ARE STILL GOOD GUYS AROUND I found one here my family can not thank them enough. Cynthia M

I didn't know much of the process and he walked me through. Got the permit approved in short time!!…read moreThank you

I scheduled a consultation with Eugene from STEN Engineering to discuss two very different…read morestructural issues at my house, and I was extremely impressed. The first was figuring out how to realign a very complicated roofline so that rainwater would channel properly. The house has been built and added onto in stages over roughly 100 years, so every addition and alteration made the roofline more complicated and less cohesive. I had literally spent hours sitting on the roof trying to figure out a workable solution. Eugene looked at the situation, thought it through for about 10 minutes, and sketched out an option that simply would never have occurred to me. It was practical, elegant, and made immediate sense. The consultation was some of the best $400 I've spent. The second issue was understanding how well the house is braced for earthquakes and how the existing foundation works structurally. Again, Eugene combined a strong engineering mind with real-world practical experience and explained everything in a way that I could actually understand. I almost never take the time to write reviews, but I was impressed enough that here I am writing one. Eugene is smart, thoughtful, practical, and very good at explaining complicated structural issues in plain English. I would absolutely call him again.

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.

I had an issue with my old stucco walls, and Jacob from Atlas came out to take a look. As we walked…read morethe property, he gave me a ton of helpful info about how my building was constructed back in the 1920s, what materials were used, and how they age. Really knowledgeable, straightforward, and professional. I'm still deciding on whether I need to move on my particular repair job, but the visit itself was super worthwhile and I'd definitely call them again.

When we moved to Oxnard, California two years ago, we did not realize that the parking rules would…read morebe so restrictive. It did not take long for the HOA to make it clear that we had a problem. After a few letters from the HOA delineating the parking rules for both the driveway and the street we searched for a contractor who could remodel the garage to accommodate our 24-foot Sprinter Van. After researching a few companies in the area, we decided on Atlas Builders and Development, Inc. and we were happy to sign a contract with Jacob Lankri, the owner. The first step was to decide on the basic design package. Once that was settled, we submitted the engineered plans to our HOA. After many months of wrangling with the HOA, Gilah Lankri, the project engineer, was able to produce engineered drawings that met the HOA's aesthetics and expectations. Jacob and Gilah submitted the plans to the city of Oxnard. Unfortunately, it took the city of Oxnard a frustrating 10 months to review and approve the plans. All the while, Atlas Builders and Development, Inc. stayed with us determined to get approval. Once we got approval to begin construction in December 2024, the demolition of the old garage was accomplished quite quickly. Even though we hit a snag regarding the Southern California Gas Company line, we eventually got approval to relocate and replace the line which delayed the project 5 weeks. Finally in March 2025 construction of the new Garage began in earnest. Jacob's team, led by an amazing foreman, Edgar, constructed a new elevated ceiling in the garage with new rafters and support beams as well as new tiled roof. The inside of the garage was completely refinished with drywall, texturing and fresh paint. New and improved lighting was installed in the garage along with assorted electrical outlets. The finishing touches included a new door to the backyard, matching the epoxy surfacing on the garage floor and patching preexisting holes in the walls. Outside, new stucco and siding had to be applied as well as painted. The disconnected solar panels and rain gutters were expertly reinstalled. In addition, an area of the driveway had to have pavers reinstalled looking better than before. I addition to the garage remodel project, Atlas Builders and Development, Inc. procured and installed a new sliding glass door complete with a doggy door for access to the back patio. They also removed a set of windows in the dining room and then procured and installed a beautiful set of French doors. Finally, Atlas Builders and Development, Inc. removed an old single front door and expertly installed a beautiful mahogany double front door. All the finishing details were expertly accomplished.

Received a call back in a short manner and was greeted with professional and quick assistance. I…read moredidn't feel rushed to have to just share all the details of my plans and they took the time to answer my questions.

I'm an owner of a Building located in Long Beach Ca. The…read moreCity send me a notification that the building was included in the SWOF Inventory list, If I want to removed it from their list I had to hire a Professional Engineer. I got different quotes and Loma Design gave me a reasonable price. Omar Mauricio the Engineer came inspected the building,took measurements, pictures, completed and signed Form 063 and presented to the City. Because of his excellent work The building will be removed from the SWOF inventory . I highly recommend this Company

I reached out to Uni construction based on their positive reviews online and they were definitely…read morevalidated. I had a small footing design I needed help with. Min is an excellent commutator which is huge for me. He also provided realistic timelines which he maintained. Above all, he knows his craft. I have more work in the near future and will definitely be using Uni construction again.

I'm currently in the beginning stages of my ADU project, and so far, working with Min Kang at Uni…read moreConstruction has been a great experience. Communication has been clear and consistent, and they've been very patient in making adjustments to the design based on my feedback. I'll update my review once everything is complete, but for now, I can confidently say it's been a very positive experience!

Ken asked great questions over the phone to learn as much as possible about my concerns. It's…read moreclear that he's been in this business for a long time and has a lot of experience. He is familiar with the area's geologists and related vendors. He was very upfront and honest about the right way to proceed with potential foundation issues. Even though he didn't think I had a problem based on house plans and documentation I provided, he was interested in coming out to see for himself. He arrived early, did some measurements, and gave me his opinion. It's not often a professional comes out and basically tells you, "everything is good here," but that's what I got! He gave me some other ideas of cheaper ways to diagnose potential problems (eg, leak test). I was very impressed with Ken's honesty and experience. He saved me a lot of time and money. I highly recommend that you call him if you think you may have a foundation issue.

Ken reached back out to me promptly. After a few minutes on the phone and after a getting…read moreinformation on my foundation concerns, he was able to conclude that it was likely not a foundational problem, but a leak causing moisture, swelling and subsequent shift in the structure of the home. Turns out he was right. After some investigation, the piping running near the water heater had a significant leak. Few people left like him. I appreciate your assistance Ken.

We used Dary Engineering for Architecture plans and they did a wonder job. Diaa was very…read moreprofessional and paid close attention to detail. These were my first set of plans that I had drawn up by an Architect and I was very impressed. We've even gotten compliments from contractors on how well the plans were. We summitted our plans to the City and they only needed minor corrections. He provided the corrections in a timely manner and they came back approved in a week. We would like to thank Diaa very much for the outstanding service that was provided. Their pricing was also very reasonable and we are happy that we found them. We definitely hope to use them again in the future.

Working with Dary Engineering was a great experience! They completed my blueprints for my ADU! They…read morewere very professional, communicated very well, and even made sure I had pointers on passing future inspections! Diaa is very knowledgeable in his field of engineering and building! I truly appreciate his welcoming personality! Looking forward to working with Dary Engineering on my next project!