One Structural did a really good job with the SB 721 inspection and repair on my rental property. Their project management team were very professional and stayed on top of all the necessary building inspections during the course of the repair work. And their friendly work crew also worked very diligently and cleaned up the area very nicely. The repair work turned out pretty good. I can actually feel the increased structural rigidity on my 2nd floor walkway now when I walk on it. So, that's a relief to me. I know the required SB 721 EEE inspection can be a major hassle for many rental property owners, so I would definitely recommend One Structural to any landlord or property manager that is need of this inspection and/or is out of compliance with this safety regulation. Be sure to schedule your SB 721 inspection early as there is Jan 1, 2026 deadline for this. read more

I am a real estate agent and I recently had a transaction that was in danger of falling through because the lender misinterpreted the balcony inspection report and had major structural concerns with a balcony. We called David and 2 hours later David was at the site, inspecting the balcony. He recorded his findings, confirmed safety of the balcony and provided the paperwork with video evidence on the spot. Lender was satisfied and we were able to proceed. Impeccable service and understanding of urgency in real estate transaction from One Structural. read more

One Structural has an amazing staff and has really streamlined communications which is crucial for success as a property manager and for resident satisfaction! Juliana and Patty have been a dream team! They are super accessible and ready to answer questions my Board Members have! Thank you guys for caring about clients and integrity! These guys are definitely one of go to's when projects require that extra attention to detail! read more

Helen and her ON-SITE guys were very helpful and understanding in coordinating with me and my HOA in finding the water intrusion. They were fair in charging me a fair price since I had to do mutltipe tests to satisfy HOA. read more

Besides having a few names dealing with this company was not only emotionally frustrating, it cost me too much money of my own as well as added un needed stress to my life. I am a tenant in a building. Retrofit1 took almost 9 months, place my car in jeopardy when it didn't need to be parked on the street, people did not show up when we were asked to move our cars too many times. Yes I know I dont know details about inspections. But if they wouldve shown up more often I believe the project would not have taken us through the summer where I didnt have access to my pool. If they werent showing up we shouldve received another text. All insulation was removed from under my whole apt and neither the retrofit company or of course my building management took any responsibility or even cared. My dwp went up over $200 a month and I was cold all winter. Workers continued to leave equipment in my way of entering my apartment. Now no one was disrespectful but this was a miserable experience. And this is not to be classist or issues pertaining to language but no one spoke english and I couldnt communicate. Grant it I was and am only a tenant but I have rights as I pay my bills and no one seemed to communicate or care about how this project not only added stress. I physically got ill. When they painted no one told us they were going to be spray painting and the dust was all over my apartment, my cats got sick, I got an upper respiratory infection and covid. Im sure living on a construction site is never a fun experience. Now if they wanted to send me a check for $800. to cover my winter bill and an apology I would change my opinion. But to be discounted and at times I became an annoying hysterical tenant as I couldn't see where they were replacing the insulation but I don't think they could even once put themselves in my or our shoes as to what we were dealing with. A quality company tries to understand the frustration of the experience not ignore it or ask apt manager to tell us to leave them alone. And currently this building is even more dirty than ever. read more

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ADU1 added a unit to an existing building by taking out 2 garages. They were very professional, followed their timeline, and did excellent work. read more

I'm really happy with this company. They just completed work on my building and it went very smoothly. I didn't receive any complaints from my tenants either, which is extremely rare, haha! I actually only heard good things from them about how nice the guys have been, how good the work looks, and that they're excited the building is getting up to code. The work looks so clean and it was very easy having their crew here the last month or two. I can barely tell work was even done. I think the whole construction took about 7 weeks. Their engineer did the plans for me too so that was nice not having to use a different company. I was working with Diana in the office and she was very helpful throughout the whole process. Someone even took care of all the city paperwork for me which was a huge relief. The tenants were able to use their parking after hours so it didn't cause any problems regarding parking. Most of the residents were at work anyway and all the construction was covered up and put away in the evenings/weekends. I didn't lose any parking spots either which sometimes happens during these types of construction. They kept their word about everything and that's all I need. Just stick to the contract, be reliable and honest, and do a good job. Retrofit1 did exactly that. I believe they also do plumbing and other construction so I will make sure to tell my friends and family to go with them. They really took away the headache of having to go through with this! THANK YOU!! read more

I love working with Helen at Balcony1 on my multifamily properties. She's attentive and thorough and their company doesn't gouge you like another company I had a terrible experience with regarding my balcony inspections. I wish I went with them from the outset as I would have saved time and money and a lot of frustration. I'm looking forward to having Helen bid on ADU conversions for my apartment building's garages and hoping to have continued great service and pricing. read more

Our HOA Used Balcony1 for our SB 326 Mandate & their team did great work, this was a quick and easy process although our hoa had over 100+ units they still managed to complete everything on time! They showed up on time, worked hard, cleaned up, and completed the report! read more

Retrofit 1 with strong Engineering Analysis and persistence was successful in convincing city government our building met their new Earthquake codes! My hats off to them! They didn't give in to govt bureaurcracy and their persistence to understanding what's required saved us 10s of thousands of dollars! Go with Retrofit one ans Save Money and hassle of govt overreach! read more

This company just finished doing construction work on the building I live in. I was pretty annoyed when I found out our building was going to have construction going on for weeks but it actually wasn't bad with them. They were super nice, CLEAN, and respectful and I don't think it even took very long. The area around the building and parking spots look way better and stronger now. Even the new paint and materials match the old one. I thought it was going to ruin the building but it actually looks better than before. Great timing, too, because I was feeling really scared after the last earthquake around the 4th of July and now I feel much better and safer. I'm glad our building did this now and didn't wait since I was in Los Angeles after the Northridge earthquake and that ruined so many building, lives, and was just terrible. I feel safe and comfortable now that our building is finished. read more

Everything went perfect with the planning and timelines. Everybody is very helpful and responsive on your concerns. Very coordinated company. The cost is very reasonable. read more

I own an apartment building in West Hollywood, and I had been dreading the retrofit that the city required. I called out several companies for estimates. Retrofit1 gave a fair price, and the communication was exceptional. Maria, in particular, was especially helpful. So, I went with Retrofit1, and they were exceptional! EXCEPTIONAL!!!!!! They took care of all communication with the tenants, were professional, and they made the entire process much smoother than I expected. They finished ahead of schedule, and I received absolutely no complaints from the tenants regarding the company. Highly, highly recommended. read more

I reached out to retrofit1 to request an estimate to retrofit and they were able to get my building exempt at a very reasonable price. If you're looking for retrofit company I highly recommend Retrofit1. read more

One Structural - Excellent Job done - Structural Engineers Near Me - Los Angeles, California

ADU1 is top-notch, I initially spoke with Helen and she walked me through the stages. We looked at many local contractors that do design-build and no one came close to their detailedness in designing what we needed! Great Accessory Dwelling Unit Company! read more

We were very pleased with Retrofit1. We had do a retrofit for our parking garage in West Hollywood and we got a good price and very good service as well. They were on top of the process, communicated well ahead of time with our tenants and us, and got the job done pretty quickly and easily. We would certainly recommend them. read more

After asking friends and looking through reviews, I contacted Balcony1 to provide us with a 326 bid for our hoa, chana walked me through the process, we eventually signed and they are keeping me in loop every step of the way. Scheduling went well, the team was attentive and clean through every phase. read more

Last year, the City of Los Angeles mandated retrofitting of all "soft-story" buildings citywide to be completed in the next seven years. Our family company decided to proceed 'sooner than later," in retrofitting our 16 unit apartment building, recognizing the industry would get busier as time went on. Early on we had our engineering done with a reputable company, but then decided to get several other bids for the construction, including Retrofit1. Retrofit1 came in with a highly competitive bid - in fact, they were our lowest bid! We were advised by other business people to pick the company with the mid range bid. But, after seeing and hearing Retrofit1's presentation, we decided to award them with the contract to retrofit our building. From the owners, the engineers and the project managers to the foreman and workers, everyone on the RETROFIT1 team expressed high levels of quality of work, professionalism, dedication and problem solving. They certainly seemed the best solution for our situation. Scheduling was perfect --they could do it when it worked best for our tenants (we mostly house UCLA students.) The communication between the staff and us was stellar. Because of our particular set-up (in an area where parking is at a premium) we felt the need to keep our tenants informed on the parking situation for the next day. Sometimes we would text the project manager late at night for the next day's schedule, and she would find out quickly what the plan was, so we could inform our tenants. We were so grateful for that! All in all, Retrofit1 did a beautiful job! We are so happy with the end result of this project! We would highly recommend Retrofit1 for a "soft-story" retrofit! And we'd encourage other owners to do it 'sooner than later' with Retrofit1. read more

I don't usually write reviews but I was worried about retrofit happening to my building because of the dust, that was not the case, Retrofit1 was very clean! they answered all my questions and concerns in a timely manner...Once the job was completed everything was left spotless! We would definitely recommend them! read more

We inherited my father in law's building, which I thought was a good thing until the city sent us a notice that we had to do some retrofit work on it for earthquakes. We were about to sell the building but decided to get some estimates to see what we could do. I met with 3 companies to get a good feel for what this project would cost and Retrofit1 made the most sense. They covered all the city jargon, tenant stuff (which I did not want to deal with) and met us at the building to explain the work. We needed something from an engineer and the actual retrofit work and they did all of that for us. The actual construction didn't take too long and the building looks nice. The paint and finished work look really good and match the rest of the building which is great. read more

Thank you Retrofit1 for saving our building! We didn't even know we had to retrofit because they sent the letter a couple years ago. My grandpa had no idea that he even received it. Someone from retrofit1 called us to offer a free estimate and when we told them we didn't know anything about this, they researched everything for us. The lady on the phone really held our hand through the whole process and requirements, even telling us about all of our deadlines. Of course I wanted nothing to do with the city so when we finally signed, they sent someone to the city for us to handle all the paperwork. Our retrofit is almost done and everyone has been happy, including the residents. They're painting right now and it matches perfectly. We are super relieved that it's almost over and went very well even when the city inspections were tricky. Everything was great. read more

Retrofit1 just finished work for my family's 2 buildings. The first one is in West Hollywood and we started with that one before the LA building to see how it would go. Everything went pretty well. Julia was our contact person in the office and she was super helpful through everything. We already did engineering with another company but Retrofit1 redesigned it because there were too many extra things on it that would've cost a fortune. Their engineer designed something cleaner without using as many columns I think. I was worried at first if it would be approved by the city but everything was approved. It saved us a ton of money for construction because the quotes we got first were really high based off the first set of plans. The construction didn't take too long for each building and our tenants were still able to park every night. The paint looks just like the building and it looks back to normal. They took care of everything we needed and are super professional unlike some other companies we dealt with who don't even answer their phones. Would definitely recommend this company. read more

We own a 4 unit apartment building in Santa Monica. We got in touch with Helen from Retrofit1 upon receiving a notice that the city required us to retrofit our building. From our very first phone call to our final payment which was today, we had nothing but smooth sailing. Everything was super organized, we had a point of contact for all questions and any email/phone call was responded to within hours every single time. I recommend their services and would use them again should the need arise. read more

We used Retrofit1 for a soft story retrofit of a smaller multifamily building in West Hollywood. It very rare that you find good value: combination of excellent end product, great service and the best price in a competitive bid process. They delivered on all 3 of those fronts. They were on top of the process, communicated well ahead of time with our tenants and us, and got the job done quickly and easily. We would recommend them highly. read more

Interviewed several companies and Retrofit1 came up with a very fair bid to do the mandatory earthquake retrofit of my 20 unit apartment building. They lived up to the representations and schedules set forth in the contract, handled the tenant relationships during construction, timely finished the job and obtained city completion permits. As with any construction job, there was some "pick up" work that needed to be done at the end, and they handled that with no fuss. They made sure I was happy with the result and I highly recommend them. read more

They're almost done working on the building I live in and it's been easy with them here. We did have to park on the street during construction hours, but I had work anyway so I didn't really feel it. They leave the construction zones covered up and clean at the end of the day. Our next door building has another company doing their work and it looks like crap. I thought that's what would happen to us but luckily our manager went with this company and not the one doing our neighbor. I'd chat with some of the workers sometimes and they were always super nice and respectful. They were even working here during the super hot days, I don't know how they do it. I'm on the 3rd floor and super happy this is done now because I didn't want our building to collapse during an earthquake. My parking spot wasn't affected even though they did work next to it. My car still fits just fine and I finally don't feel like the roof is going to collapse lol. read more

This company worked on 3 of my dad's buildings and not once did we see any of the behaviors the other review described. We actually only saw the opposite from start to finish. When their project manager first came out, I think her name was Maria, she was very professional and helpful. After getting a few estimates from other companies, we felt confident going with this company. Not only was their pricing fair, especially for the quality of work and materials, but they were one of the only companies that really know what they were talking about and were not trying to rip us off. Another company offered us a lower price and then tried to add almost $14,000 after! Beware of low estimates like that. So greedy! Retrofit1 didn't add anything else after signing which was a good sign. We started with one building to test things out and it took about 7/8 weeks to complete construction. Before they were even finished, we knew we wanted to sign the other buildings up with them. Very clean work, respectful workers, and out tenants were extremely satisfied with the work and didn't report any issues. Every time we had a question someone was there to help. Even the owners would come out to meet with us any time we needed. All the girls in the office have been helpful too and took care of city stuff for us. We were initially surprised and nervous when the city told us we had to do this, but now I'm glad it's over and our buildings are stronger than ever thanks to Retrofit1 read more