Sierra Madre isn’t just any Southern California neighborhood. It has its own personality, charm, and zoning laws. That means a copy-paste approach to ADU construction won’t cut it here.
The city’s character is defined by its peaceful streets, historic homes, and strong sense of community. So, it’s crucial to approach any new construction, especially ADUs, with a deep understanding of both aesthetic considerations and city regulations. That’s where local experience and craftsmanship come into play.
Ground Up Builders has worked on ADU construction projects throughout Sierra Madre and nearby areas, and we know how to blend function with style, creating units that look like they’ve always belonged.
EXCELLENT Based on 178 reviews Nora S.October 21, 2025Verified We've worked with Uzi and the Ground Up Builders team on a number of projects in our home -- from gut renovations of two bathrooms to opening up walls in our kitchen, installing new lighting and electrical, mold remediation, and refinishing all the floors in the house. Oh! And when we had an emergency plumbing situation a week after moving in having nothing to do with his work, Uzi sent his team immediately to help. While Uzi is incredibly capable with major renovations, he approaches even the smallest jobs with the same level of care. Truly, no job is too big or too small for him. Uzi is smart, thoughtful, patient, and deeply experienced-- he's like a walking encyclopedia -- he has answers to everything! He's also an amazing communicator -- always available, always willing to explain every step. We're not the easiest clients (we're very particular and even more indecisive!), but Uzi never once made us feel rushed or like we were a burden. He always walked us through every option and every choice. His team of painters, tile installers, plumbers, handymen, and more -- are all so kind, skilled, professional, and respectful-- always putting on booties before entering and cleaning up after themselves when they finished. We always felt comfortable with the Ground Up team in our home. We appreciate Uzi more than we ever thought it was possible to appreciate a contractor. In short, we recommend him and Ground Up without hesitation. KC B.September 26, 2025Verified I had the privilege of working with Jacob and his team. He is incredibly dedicated and personally invested in his work. He truly listens, communicates with care, and pays attention to every detail. He and his team are meticulous, thoughtful, and hardworking, while also being very respectful of the home and space. They're not only trustworthy but also genuinely kind and caring--it felt like a real personal and collaborative relationship throughout the process. I highly recommend. Heather C.September 25, 2025Verified We needed to remove a bath/shower tile surround to re-waterproof and retile, and replace the fixtures. We went with GUB after getting their name from a tile vendor and meeting with more than one alternative. GUB were the most expensive by far but also were the most responsive and had the most professional and comprehensive bid. All of the legal paperwork and their license information was included, along with a detailed scope of work and examples of past work. Adi Aiish was our Field Manager. He's friendly and very responsive and our overall impression was that the additional cost would be worth it to have a professional job. To be succinct, here are the pros and cons from the project: Pros: - Responsive field manager - Very fast demolition and quick work overall - Crew was hard working and polite, especially Antonio - Tiling work looks good Cons: - When a piece of plumbing broke and flooded the ceiling below, the response was that things like this happen. It took 5 days for the field manager to take a look and offer an apology. - During demolition, the mess was off the charts bad, leading to a lot of cleanup for us afterwards. During the project only the floor was covered (and on one day not at all). I've had other renovations done that were much cleaner. - The finishing was not as polished as I would have hoped. The caulking around fixtures was messy, the tile tilted slightly revealing the old seam around the floor, painting that was in the bid was only one coat until I asked for more. I think the M.O. is to work very quickly and fine tune the finishes only after being asked. Overall we're happy with the result but would have liked them to go a little slower to be more careful. Kristy K.September 16, 2025Verified Ground Up Builders have been amazing to work with!! They are professional, offer great suggestions, and produce sold work. Jacob is amazing!! He truly cares about the work that is put into your home as if it's his own home. He treats you like family. For us, Jacob went above and beyond. We live in El Monte and the city is not easy to work with. They kept giving us problems with permits, etc. Jacob didn't just email them and wait around. He drove over in person time and again to resolve the issues and speed up the process for us. If you want something done in your home, you can trust the team at Ground up Builders! Aaron F.September 10, 2025Verified I had an excellent experience with Jacob Hirschorn and Ground UpBuilders! They came out to inspect a problem I was dealing with after I had already received a quote from a big-name company. Right away, I noticed how professional and detailed they were. They carefully assessed the situation, explained everything clearly, and recommended addressing the issue in two stages to make sure it was done right. Thanks to their honesty and thoroughness, I discovered that the big company's quote was not only overpriced but also wouldn't have fully solved the problem. Jacob & his crew saved our family a lot of money and gave me peace of mind knowing the job was done correctly. I highly recommend Jacob & Ground Up Builders if you're looking for a contractor who is professional, trustworthy, committed to doing quality work & a long lasting relationship. Barbara O.September 2, 2025Verified Jacob Hirschorn and Ground Up Builders did a high quality job on a residential apartment unit that needed mold remediation and tile abatement, followed by replacement of very old bathroom materials and fixtures with new of same. The finish product looks very professional. Jacob managed the field crew with Ground Up's long-standing pool of workers, including Manny and Cesar. Jacob did not over-promise anything and stayed on schedule. The office team was very helpful as well, including Mary Jane and Tish. It is best to determine ahead of time if you may need a THP with the City of LA and establish who will purchase materials. Thank you Ground Up Builders. You delivered. John F.August 26, 2025Verified We have now used Uzi and his team for three jobs: When a car crashed into a front bedroom, for a bedroom & den with flood damage, and a recent remodel including repairing hundred year old hardwood floors, windows, etc. He gets all 5 stars from us. He does what he says he will, and he does it on time. He has a fine crew that really came through for us. Absolutely 5 of 5 stars. Thanks for everything, Uzi!! Angelo D.August 19, 2025Verified I've worked with Ground Up Builders for many years, and Jacob has always been my go-to person. He is extremely knowledgeable, patient, and takes the time to share creative ideas--he recently spent a long time helping me plan my kitchen remodel. His estimates are fair, right in line with other general contractors, but what sets him apart is his honesty, integrity, and the value he brings to every project. Over the years, Jacob has replaced carpeting with LVT flooring (and even secured me a great discount with the flooring company) and corrected the poor work of a previous contractor on a decorative window. Every experience has been positive, and I truly trust his judgment and workmanship. Ground Up Builders is always the first company I call, and I highly recommend them to anyone looking for quality work and a contractor they can rely on. Hank C.August 18, 2025Verified Huge fan of Ground Up's work. Jacob and Uzi have guided us through planning and permitting for several residential projects with amazing know-how, attention to detail and professionalism. Certainly the most attentive and thorough contractors we've dealt with. And when we lost our home in the January 2025 Eaton Fire, they went above and beyond to help us navigate our insurance claim and to help prepare for our possible ground-up rebuild. Highly recommend them for any design or construction needs, big and small. Hector H.August 13, 2025Verified I purchased my first home with my dad last year and really wanted a pool in my small backyard. I was worried it wouldn't be possible just due to the huge dirt hill we had taking up half of the space. Adi Aiish at Ground Up Builders and Marcos Rojas took on this challenge and let me tell you, they absolutely did not disappoint. They took my plain backyard and turned it into an oasis, equipped with a heater for the pool AND the spa, as well as a built-in, natural-gas grill and countertop and tied it all together with a stunning planter and moody lighting that really brought the set up to life at night. I highly HIGHLY recommend these guys for anybody's future home upgrades and projects. Thank you so much for also getting this done quickly and safely!!
You might be thinking, “Is an ADU worth it?” In Sierra Madre, the answer is often a solid yes, and here’s why.
Property values are high in this area, but square footage can be limited. An ADU gives you room to grow, literally, without needing to buy a new property. Many residents use their new units as in-law suites, art studios, backyard rentals, or even short-term guest spaces. With proper planning, they can generate passive income while also boosting the overall value of the property.
The beauty of ADU construction in Sierra Madre is that it allows you to build smarter, not bigger. The footprint stays small, but the possibilities feel endless.
Let’s face it: construction can be stressful. But with the right planning and the right team, your ADU journey doesn’t have to be overwhelming. Here are a few local insights to keep in mind if you’re considering building in Sierra Madre:
Start With the Purpose- Are you building for family, income, or flexibility? Knowing this helps shape everything from the layout to the permits.
Design for the Lot- Sierra Madre has a variety of lot sizes, slopes, and architectural styles. Choose a design that complements your existing home, both visually and structurally.
Understand Local Regulations- Every city has its own permitting process. Sierra Madre is no exception. Working with a team familiar with local codes can save you weeks of back-and-forth.
Think Long-Term- It’s not just about today’s needs. Build with future resale value and adaptability in mind.
It’s not just homeowners who see value in ADU-style construction. Local Sierra Madre businesses, especially those in wellness, hospitality, and creative fields, are looking for ways to use their outdoor space more efficiently.
We’ve helped transform underused backlots into artist studios, consultation rooms, and short-term rental spaces. These custom builds add square footage without the costs and permits of full-scale commercial expansions. When done right, they blend perfectly into residential zones while supporting small business growth.
We’re not just another construction company; we’re your neighbors. Ground Up Builders brings years of local experience, design knowledge, and a commitment to quality that you can count on.
From the first idea to final walkthrough, we handle everything in-house: design, permitting, construction, and finishing. That means no gaps, no surprises, just a smooth process from start to finish.
Every ADU we build in Sierra Madre is treated like a personal project. We know how important your home is, and we’re here to elevate it with solutions that fit your lifestyle and budget.
With ADU construction, you’re not just investing in a structure; you’re investing in freedom. Whether that’s financial flexibility through rental income, emotional security with space for family, or creative liberty with a home studio, the impact goes beyond bricks and beams.
And in Sierra Madre, where the community is close-knit and space is precious, every square foot matters. ADUs give you room to breathe, grow, and enjoy your home in new ways.
Ready to take the next step? Ground Up Builders is here to help you explore your options, answer your questions, and map out a plan that works for your home and budget.
Your ADU construction in Sierra Madre doesn’t have to be complicated. With the right partner, it can be exciting, empowering, and even fun.
Let’s build something meaningful together. Call today for a free consultation or visit our site to schedule a site evaluation.
| Zip Code | Area Code | City | County | State |
| 91024 | 626 | Sierra Madre | Los Angeles | CA |
| 91025 | 626 | Sierra Madre | Los Angeles | CA |
We’ll contact you shortly to schedule an appointment convenient for you. We promise to never send you spam.