Ground Up Builders helps Alhambra homeowners build fully permitted ADUs, including garage conversions, detached units, and backyard cottages. As a design-build ADU contractor, they manage design, permitting, and construction.

Ground Up Builders – ADU Contractor in Van Nuys, CA

About Ground Up Builders

ADU Builders Serving Alhambra Homeowners

Alhambra is recognized for its tree-lined streets, historic bungalows, and a lively downtown area. As property values continue to rise and housing options remain limited, many homeowners in the area are looking for practical ways to make better use of their existing space. Ground Up Builders works with Alhambra property owners to convert underused yards, garages, and backyards into fully permitted accessory dwelling units.

Whether the goal is a private studio, a guest suite, or a dedicated home office, Ground Up Builders approaches each project with the specific needs of the homeowner in mind. Their work as an ADU contractor covers a range of unit types, including detached ADUs, garage conversions, and smaller attached units — all designed to add functional living space without significantly altering the character of the existing property.

A Full Design-Build Process

Ground Up Builders operates as a design-build ADU contractor, meaning they manage the entire project from initial design through permitting and final construction. This integrated approach helps keep the process organized and reduces the back-and-forth that can come with hiring separate designers and builders.

Their team ensures that all projects are built to meet local building codes, covering both safety standards and quality requirements. Navigating the permitting process in Alhambra can be complex, and having an experienced ADU builder handle those steps can save homeowners considerable time and effort.

  1. Custom ADU design tailored to the property and homeowner's needs
  2. Permit acquisition and compliance with local regulations
  3. Garage conversion and backyard cottage construction
  4. Detached and attached accessory dwelling unit builds

Making Use of Underutilized Space

Many Alhambra properties have garages, side yards, or rear lots that sit largely unused. Ground Up Builders specializes in identifying these opportunities and turning them into livable, code-compliant spaces. A garage conversion contractor with local experience understands the specific zoning rules and setback requirements that apply in the area, which can make a meaningful difference in what's achievable on a given lot.

For homeowners considering an in-law suite, a granny flat, or a backyard cottage, Ground Up Builders offers a structured process that covers the key stages of development. Their experience as an accessory dwelling unit builder in the Alhambra area means they are familiar with the local approval process and what it takes to bring a project to completion.

Ground Up Builders focuses on helping property owners maximize the potential of what they already own — creating additional living space that is practical, permitted, and built to last.

Services

Ground Up Builders performs the following services

  • Architecture & Design
  • Permit Specialist
  • Construction

Ground Up Builders Reviews

Lauren Worsham

2025-11-22
"We cannot recommend Ground Up Builders enough! They converted our two-car garage into an ADU and did a truly amazing job. They finished ahead of schedule, communication was great throughout the process, and every single worker we interacted with was professional, kind and courteous. Uzi runs his business with both warmth and integrity. He generously answered every question we had even the stupid ones!, and offered a lot of valuable advice too. We particularly appreciated that he kept his promise to not go over budget. There wasn't a single change order, even when there was an unexpected issue with the sewer line - he explained that the contingency would cover the additional costs. Such a relief knowing that what he bid was what we'd pay! Special shout-outs also to Marvin, Raphael and Nathan who were a pleasure to work with. Highest possible recommendation!"

Heather Collins

2025-09-25
"We needed to remove a bathshower 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. Hes 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. Ive 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 were happy with the result but would have liked them to go a little slower to be more careful."

Angelo Di Fusco

2025-08-19
"Painted and replaced flooring Ive 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 ideashe 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."

Hector Herrera_11

2025-08-13
"I purchased my first home with my dad last year and really wanted a pool in my small backyard. I was worried it wouldnt 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 anybodys future home upgrades and projects. Thank you so much for also getting this done quickly and safely!!"

Jacquie Barnbrook

2025-05-29
"Ive worked with Ground Up Builders on several projects over the past 15 years, and theyve consistently delivered outstanding results. Most recently, they completed a full remodel of my homean 8-month project that was delivered on time and on budget. That alone speaks volumes in todays world. Uzi was incredibly helpful throughout the process, offering thoughtful ideas that made the design not only beautiful but also future-proof. His professionalism is unmatched, and he leads a team that is both reliable and respectful. They showed up consistently, communicated clearly, and always cleaned up after themselvesa small detail that made a big difference. Thanks to Uzi and his team, Im now living in my dream home. I wouldnt trust anyone else with a project of this scale and importance. Uzi and the Ground Up Builders team are worth every penny and more! Photo- new family room looking out to the deck"

Specifics

Licensed

Opening hours

Monday 8:00AM - 5:00PM
Tuesday 8:00AM - 5:00PM
Wednesday 8:00AM - 5:00PM
Thursday 8:00AM - 5:00PM
Friday 8:00AM - 5:00PM
Saturday -
Sunday -

Location

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