I contacted Alpha Structural for concerns about the recent development of uneven flooring…read morethroughout the house, and today they sent out Ken Crown for a free inspection. After pointing out the areas of concern to him, Ken offered a couple non-serious possibilities for the phenomenon, and was able to assure me there was no threat to either the structural integrity of the house or the cement slab foundation - and pretty much bottom-lined it, saying there's really nothing to worry about. I really appreciated Ken's easy-going demeanor, and sensed zero interest in him trying to sell me a repair service that wasn't needed. Ken is just an honest guy offering his experienced opinion - in no doubt, putting yet another homeowners' unwarranted concerns to rest. Would be nice If all companies sent inspectors who operated the same way as Ken.

No,! we called these guys out for some water mitigation and talk about egotistical know it all with…read morethe price four times more than the next guy. Terrible attitude and the office staff was just as bad or worse. After I told him I would never do business with them. I'm pretty sure they sold my information and now I have all kinds of people bugging me about similar jobs. Run from this company

I hired Prime for a job to modify a structural wall in my home…read more They offer a friendly, professional service. Honest pricing. Quick turnaround time. Very happy with Ron and his team. Would highly recommend them for any of your engineering needs.

We were looking to add a bedroom a pantry and a bathroom to our current house. Not knowing where to…read morestart, we're glad we found Ron. He's very knowledgeable and has the patience to show us the rope since this was our first remodeling project. His understanding of the city and construction requirements is very helpful in achieving the look we want. His pricing is upfront and, while communication can be improved, his attention to detail is top notch. Looking forward to work with Prime Studio again for future projects

I had the pleasure of working with an exceptional engineer Hamid who drafted the plans to convert…read moreour kitchen into an open-concept layout, which required removing a previously load-bearing wall. From start to finish, the level of professionalism, expertise, and attention to detail was truly outstanding. The engineer demonstrated a deep understanding of structural integrity while also respecting the design vision for the space. He carefully evaluated the existing structure and developed precise plans to safely support the load while allowing us to achieve the open, modern kitchen we wanted. His calculations and documentation were thorough and well-organized, which made the permitting and construction process much smoother. What impressed me most was his ability to balance technical precision with practical solutions. He communicated clearly, answered all questions patiently, and ensured the plans were easy for the contractor to follow. The result was a seamless transformation--our kitchen now feels bright, spacious, and beautifully integrated with the rest of the home. If you need an engineer for structural modifications, especially for projects involving load-bearing walls, I highly recommend his services. His expertise, reliability, and commitment to quality truly set him apart.

I had a roofer tell me that my entire roof support structure was in danger of failing and they had…read moretheir structural engineer come out. The estimate was astronomical and would take months to complete. I brought in Distinguished Structural Engineers to give me a second opinion. They give me a written analysis with lots of pictures pointing out some issues, but they gave us peace of mind that the structure was fundamentally sound and only needed attention in a few areas. We used one of their recommended roofers and spent a tiny fraction of the first roofer's estimate to correct the issues. I highly recommend Distinguished Structural Engineers for any work you're considering.

Absolutely highly recommended!!!!! I worked with them on too…read moremany previous projects, and it was just a perfect experience every time, they are always ready to prepare architecture plans and have it ready for submittal to the cities planning department in no time, and get it approved, very knowledgeable and up to date with the building code requirements, and have an excellent manpowers that can get your projects done up to your satisfaction! This is a one stop shop for all of your construction project needs

Mustafa was great to work with.. I highly recommend his services and I will continue to go to him…read morefor future needs. He is fair on pricing & excellent in delivery, communication, and friendly professionalism. 5 stars *****

We hired Ben to create a drawing plan for our guardrail, and we couldn't be happier with his work!…read moreThe project was completed incredibly fast--he's responsive to our inquiries, very helpful. Ben not only handled the calculations but also took care of the installation. His pricing is very reasonable. Highly recommend ACC for any similar projects!

"ACC & Engineering exceeded my expectations. After my previous engineer missed some details and…read moreignored my requests, I reached out to Ben through Yelp. He responded rightaway, came to the site the same day, and provided a quote on the spot. Within a week, he delivered precise drawings, and the city approved them without any corrections. Impressed by their efficiency and professionalism, then I found out they are licensed to do construction too!! Not only design or only engineering like most firms, so I also hired them for construction as a returning customer I felt taken care of even more! Their in-house team handled everything seamlessly. Great communication, fair pricing, and outstanding work--highly recommend!"

Working with Ellen, Julian, and others from JZ Structural was great. They were extremely…read moreresponsive. They also diligently worked with the city, project manager, and other contractors to get the job done. Ellen and Julian also provided a very personal touch with guidance in hiring contractors, materials to use for the project, and design. They explained everything to us in detail and were always available to answer any questions and address our concerns. Overall, JZ Structural provided us with a great experience. Would highly recommend getting in touch with them if you need help with building and large renovation projects.

I moved into a fairly old house recently and had concerns about various cracks on the property. I…read morecontacted Ellen, and she arranged for Julian to come by my house for an inspection. He arrived on time. I showed him the areas of concern. Julian took his time to explain to me which issues were natural and expected for a home this age and what I should have someone take care of.

I had a great experience working with them. They were professional, responsive, and really took the…read moretime to understand my vision. The design came out well-organized and exceeded my expectations. Communication was smooth throughout the process, and they made everything much less stressful. I highly recommend them!!!

I am very disappointed with the level of service provided. The week prior, we had a detailed…read moreconversation regarding a resolution for an existing structure on our 5-acre property, and the engineer agreed to schedule an in-person consultation. We confirmed an appointment from 12:00 PM to 1:00 PM in the Temescal area of Corona. Despite his office being located in Corona, he stated he was unable to find the property, even after I provided clear directions. My elderly parents were present at the property to assist, and I had arranged to meet him during my lunch break from work. Upon arrival, I found no issues accessing the property there were no "large rocks" blocking the entrance as he claimed. Unfortunately, he had already left before the scheduled time without proper communication. Instead, he states that we send photos of the structure. This experience was a significant waste of time and demonstrated a lack of professionalism, reliability, and respect for our schedule. I would not recommend this service based on our experience.

Emad Makar did a Soil Analysis and Engineering report so that we could replace a retaining wall…read more His fee was reasonable and he quickly worked on the project at our property. He set expectations on when he could deliver the report and met the timeline. It is a detailed report that will be used by LA County to authorize a permit. We are happy with the quality and timeliness of the services provided. We appreciate Emad's effort and the quality of the report. We will use his services again if we have projects in the future

Emad came out to inspect a property we are in the process of buying. He did a thorough inspection…read moreand sent me a report the next day! He was very detail oriented and great with communication. Super friendly and would recommend for any engineering tasks you need done!

I didn't have a great experience with ProStruct. The manager who handled my case, Irvin, was nice…read moreenough, but otherwise, I would advise looking elsewhere. I specifically requested a civil engineer to look at the drainage situation at our house, along with the waterproofing at our exterior doors. Their web site states that they have civil engineers on staff, and I therefore thought they'd be able to help. In my case, however, they sent a structural engineer and he didn't have a whole lot to say and was apparently unable to comment with any level of detail about the concerns I had regarding drainage or waterproofing. It was honestly just an $1100 waste of time.

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!

I recently had an addition built onto my home and I can't say enough great things about this…read morecompany. From start to finish, they were professional, respectful, and truly dedicated to delivering quality work. The crew showed up consistently -- they even worked on July 4th -- which really showed their commitment to staying on schedule and doing things right. The workmanship is flawless. Every detail looks clean and intentional, and the finished space blends perfectly with the rest of the house. To be honest, the quote was so good to begin with I thought it may have been too good to be true but it wasn't. I had a good handful of modifications throughout the project and Fawaz didn't charge me an extra dime. Everyone I interacted with was friendly, honest, and easy to communicate with. It's rare to find a team that does excellent work and is this pleasant to work with. I would absolutely hire them again and highly recommend them to anyone considering a remodel or addition. They made a big project feel smooth and stress-free. Also, they completed a full 400 square foot addition to my house in just over two months.

They started out well. I liked them but the owner & project manager hovered over their workers and…read morekept them moving constantly. They also kept adding on costs because they did not quote accurately. Pretty sloppy overall. They need to get it together. Not good quality or value.