Quality First Builders offers full-service ADU construction across LA County since 2014. They handle design, permits, and building in-house for detached ADUs, garage conversions, JADUs, and in-law suites.

Quality First Builders, Sherman Oaks, CA

About Quality First Builders

ADU Construction Services by Quality First Builders

Building an accessory dwelling unit in Los Angeles involves more than hiring a general contractor. It requires a team with working knowledge of local zoning laws, lot constraints, and permit timelines. Quality First Builders has been providing ADU construction services across LA County since 2014, helping homeowners convert garages, backyards, and underutilized spaces into functional accessory dwelling units.

As an experienced ADU builder, Quality First Builders handles the full scope of work in-house. This includes custom design, permit documentation, construction, and final inspections. There are no handoffs to outside vendors, which means homeowners have a single point of contact throughout the entire project.

What They Build

Quality First Builders works on a range of ADU types to suit different property configurations and homeowner goals:

  1. Detached ADUs — standalone backyard cottages and granny flats built on existing residential lots
  2. Garage conversions — transforming existing garages into livable accessory dwelling units
  3. In-law suites — attached or interior units designed for multigenerational living arrangements
  4. Junior ADUs (JADUs) — smaller units created within the existing footprint of a home

Whether the goal is generating rental income, creating a guest house, or accommodating family members, Quality First Builders approaches each project based on the specific needs of the homeowner and the constraints of the property.

How They Work

Quality First Builders operates with licensed and bonded crews and maintains clear project timelines throughout the construction process. Their in-house approach means that design, permitting, and building are all managed by the same team, reducing the coordination issues that can arise when multiple contractors are involved.

For homeowners in LA County considering an accessory dwelling unit, working with a contractor familiar with local regulations can make a meaningful difference in how smoothly a project moves through the permitting and construction phases. Quality First Builders has built that familiarity over more than a decade of ADU work in the region.

Their services are suited to homeowners looking for a structured, managed process — from the initial design consultation through to the final inspection sign-off.

Services

Quality First Builders performs the following services

  • Architecture & Design
  • Permit Specialist
  • Construction

Quality First Builders Reviews

Tom Huang

2026-01-08
"Amazing job by Eli and Donna and the people they work with. We needed our garage converted to an ADU with a second level, and Eli came in, looked at what we needed, and provided everything that needed to be done to get the ADU we wanted. Very knowledgeable, with lots of experience, Eli was referred to me by a friend who happy with his work, and I'm glad I took the recommendation. His staff is great and gets work done, and Donna helped us figure out elements so we can create the interior design we envisioned. Eli gave us a quote that we were largely able to stick to, and he finished the whole project in 3.5 months, just as he promised. Would highly recommend Quality First for their service, professionalism and getting the job done... I heard lots of horror stories from friends not getting their jobs done by shoddy contractors, so it was quite the relief when we saw that Eli knew what he was doing and the job was going to get done."

Lafaye Brown

2025-11-04
"i hired Quality First Builders for a full kitchen remodel in our Studio City home and I couldnt be happier with the result. Eli was great about walking us through what actually mattered vs. what would just drive up the cost and also he kept the project running on schedule. Also Donna has a great eye for design! Donna helped us pick materials and colors that look amazing without blowing the budget. Their crew showed up on time every day and kept things clean and also made sure we could still use part of the house during the remodel. So..the last inspection all went smoothly and the new kitchen now feels way more functional than ever compared to before! I highly recomend Eli and Donna if you want a team thats just straightup honest and going to deliver on time."

Josie Bohorquez

2025-08-28
"Working with Eli and Donna was an outstanding experience from start to finish. Their attention to detail and their commitment to quality truly set them apart. Eli delivered the project on time and handled every phase of construction with professionalism and care. The entire team was respectful and punctual. There was always a big team working from Monday-Saturday. Donna brought our vision to life with creativity and expertise. The final result was not only beautiful but also functional and tailored perfectly to our needs. She was patient and guided me throughout the entire process. Couldn't have picked out my gorgeous backsplash and countertops without her! We couldn't be happier with the outcome and would highly recommend Eli and Donna to anyone looking for a reliable, talented team to bring their home or project to life."

George Chammas

2025-03-23
"My wife and I started our home renovation project in Oct 2024, and when looking for the right contractor, we really connected with Eli and Donna. We essentially tore our 1300 sq ft 2 bed2.5 bath home down to the studs and built it back up, so it was a big job. Eli and Donna were the only contractors we spoke with who seemed to take a genuine interest in our job. They were enthusiastic and took our thoughts and ideas in stride as we brainstormed the best way to tackle the renovation. Eli even took us to a similar project he was working on in the area to get a sneak peek at the type of work his team could handle. This really gave us some insight and peace of mind that they were a good fit. Eli and Donna were also very quick to reply compared to all the other contractors we were talking with. They took the initiative, helped us refine our design, and were super upfront about the scope of work and timeline. Another huge positive for us in deciding who to work with was the fact that Donna helped with the designfinishes. My wife and I had a specific aesthetic in mind, but with our day jobs and other life events, we didn't always have the time to really dig and sort through thousands of styles of materials and finishes. Unlike other contractors, Donna was able to provide extra help in guiding us to pick materials and finishes that we liked but also fit within our budget interior and exterior. So, while they might be more expensive than some other contractors out there, they really show their worth in the extra care towards design, and they are lightning fast. Our home was finished and move-in ready by Feb 2025, which was astonishing considering we had multiple unexpected items come up new plumbing mainline for the entire property, for example. Our house was originally built in the 1920s, with updates over the years from previous owners. The updates were sometimes shoddy at best. Eli and his team did an amazing job renovating all the sketchy past work. They turned our tiny galley kitchen into an epic and inviting dream kitchen. They opened the whole house up and made it functional and sharp. All in all, Eli and Donna were the right vendors for us for this job. I think if we went with any other contractor, it would've taken twice as long, and we certainly wouldn't have the attention to detail on things like kitchen cabinetry, floorplan design, customization, tiling, finishes, etc., If there were any specific feedback I'd give to make the experience even better, it would mainly be on the organizational side. I'd recommend a collaborative spreadsheet to increase transparency with the client in a more straightforward way. Other than that, we had a really solid experience and are extremely happy with our home!"

Larry Shoham

2024-12-18
"Where do I begin? At times it feels like my life is just a series of poor choices. But when it came to hiring a contractor, I finally made a good choicea really, really good choiceby trusting Quality First for my epic home renovation. When I met Eli, I saw something different from the other contractors who came to look at my home. I felt like I was talking to an artist rather than a contractor, someone with a strong vision for what my home could be. Eli had been recommended to me by a good friend of mine who had work done on his home, and the quality of Quality First was evident to me. Eli and Donna are experienced pros, and their team is exceptional. During the demolition, his foremen Gio and Wilder, came across some paperwork, pictures, and jewelry that they set aside for me. They could have easily tossed these things, but the fact that they didnt is a reflection of their thoughtfulness and integrity. The two of them and everyone who works with Quality First are professional, hard working, and just really good people, which is something I was not expecting at all in this business. Okay, so Im just this dude that doesnt spend a lot of time thumbing through design magazines or scrolling Pinterest. Choosing floors and tile and fixtures and vanities and lights is totally outside my comfort zone, and I was so grateful to have Elis incredible wife Donna help with the design and purchasing. Ideally, a person should go into a project like this with a clear picture of what they wantbut I didnt have this. I really didnt know what I wanted, so I depended heavily on Donnas suggestions, and I couldnt be happier with the result. Like Eli, she is a clear and responsive communicator, extremely patient with me. So many times throughout this build I had problems thinking through the myriad decisions presented to me. I cannot overemphasize Eli Donnas patience in dealing with me and my indecisiveness, holding my hand through the process. When it became during the build that the old stucco on my home couldnt be salvaged, Eli wanted to make it right. The quote he gave me for the stucco was far below what he should have charged me; he must have taken a loss. There were other things that Eli basically threw in that werent in the original contractan upgrade of the back patio overhang, cabinets in the laundry room, a linen closet. Throughout the entire build, I got the sense that he didnt want anything his hand touches to be anything less than his companys name would suggest, Quality First. As an educator, I try to teach my students that the principle of reciprocity is alive and well in this world. When others do something good for us, we feel an obligation to return the favor. Ive never written an online review on these sites ever before, but I feel an obligation to bring my experience of working with Quality First to light. Thank you!"

Specifics

Licensed

Opening hours

Monday 9:00AM - 5:00PM
Tuesday 9:00AM - 5:00PM
Wednesday 9:00AM - 5:00PM
Thursday 9:00AM - 5:00PM
Friday 9:00AM - 5:00PM
Saturday -
Sunday -

Location

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