Why Homeowners Choose Fielding ADU Builders for ADU
Homeowners across Los Angeles, Long Beach, Anaheim, and the surrounding Southern California market choose us for one reason that matters more than any sales pitch: we put the price in writing before any work starts, and we stand behind the finished ADU for a full year under The Garrison Standard. Since 2006, our locations have built a strong local reputation by showing up inside the window we gave, doing the job by the book, and leaving the site clean and squared away. That reliability, backed by Reed Calloway’s leadership, is what makes us a top ADU company in Los Angeles and beyond.
6 Reasons We’re a Top ADU Company

Two Decades of Local ADU Experience
Fielding ADU Builders has been building additions and accessory dwelling units since 2006, which means we’ve worked through every code cycle, zoning change, and permitting shift Los Angeles homeowners have faced. Our teams know what the Los Angeles Department of Building and Safety expects before we submit a plan, and that familiarity keeps projects moving instead of stalling in review. For cities like Long Beach, Anaheim, and Riverside, our locations understand the local overlay districts and setback rules that trip up less experienced builders.
A Strong Local Reputation That Speaks for Itself
We don’t lean on a single flashy review. We lean on a consistent pattern: homeowners in neighborhoods from Santa Clarita to Huntington Beach tell their neighbors about us because the crew showed up, did what the contract said, and finished without drama. The Garrison Standard means every location works to the same disciplined playbook, so the experience a homeowner gets in Irvine matches what a homeowner gets in Fontana. When you call us about an ADU in Los Angeles, you’ll be connected with the local team that covers your address, and that team is held to the same standard as every other Fielding ADU Builders location.
Licensed, Insured, and Held to a Higher Standard
Every pro working under the Fielding ADU Builders name is required to hold the license and insurance their state requires, and each location is independently owned and operated within the Garrison Partners family. We don’t sidestep permits, and we don’t ask homeowners to sign off on unpermitted work to save a few dollars. In Southern California, where cities like Santa Ana and Moreno Valley have tightened ADU enforcement, doing it by the book the first time protects your investment and your ability to rent or sell the unit later.
Real Expertise with Abodu, Cover, and Dvele
Prefabricated and panelized ADU systems from companies like Abodu, Cover, and Dvele are changing how quickly a unit can go from foundation to finish in Los Angeles. Our teams know how these systems are engineered, how they connect to California plumbing and electrical, and what site prep they demand before delivery day. If you’re weighing a prefab ADU against a traditional stick-built unit, we can walk you through the tradeoffs in plain English, including the price range for each path in your city.
Transparent Pricing in Writing
The price we quote is the price you’ll see on the final invoice, no change orders for things we should have caught in the plan. Before any work starts, you get a written line-item estimate that breaks out site prep, foundation, framing, systems, and finishes, so you can see exactly where the money goes. That commitment is part of The Garrison Code: price in writing before any work starts. Homeowners worn out by prices that move at the door find that reliability worth more than a cheaper bid.
A Full-Year Written Warranty
Every ADU we build is guaranteed in writing for a full year. If something fails during that time, we come back and make it right at no charge. That’s not a vague promise; it’s The Garrison Standard, and it applies to every location in our network, from Oxnard to San Bernardino. We also back our workmanship with the plain-spoken expectation that the crew you let into your backyard is service-owned, disciplined, and accountable to you.
Our Promise to You
Every Garrison company works to the same standard, and Fielding ADU Builders is no exception. We arrive inside the window we gave you, we put the price in writing before any work starts, we do the job by the book the first time, and we leave the site clean and squared away. The work is guaranteed in writing for a full year, and if it fails in that time, we come back and make it right at no charge. We don’t ask you to trust us on faith; we ask you to hold us to the exact terms in the contract. Our locations are open Monday through Friday from 7:00 AM to 7:00 PM and Sunday from 7:00 AM to 7:00 PM. Call (361) 315-4177 to get your free written estimate started.
Frequently Asked Questions

We’ve been building ADUs and additions since 2006, and every location in our network works to The Garrison Standard: a written price before work starts, a site left clean, and a full-year written warranty on the work. Most homeowners who compare us to other builders in Los Angeles, Long Beach, or Anaheim end up choosing us because the discipline shows up in the details, from the line-item estimate to the way the crew manages the job site. Call (361) 315-4177 to get a free estimate and see the difference for yourself.
If something fails within the first year, we come back and make it right at no charge. That’s the full-year written warranty under The Garrison Standard, and it applies to every Fielding ADU Builders location. Before work even starts, you’ll have a written contract that spells out the scope, the price, and the warranty terms, so there’s no ambiguity about what “right” means. Call (361) 315-4177 and our team will walk you through exactly what the warranty covers for your project.
No, estimates are free. We’ll send the local team that covers your address to look at your site, talk through what you want in your ADU, and put together a written line-item estimate with the price range in dollars. You’ll see the cost for site prep, foundation, framing, systems, and finishes broken out, so you know where every dollar goes before you commit. Call (361) 315-4177 to schedule your free estimate.
Every pro working under the Fielding ADU Builders name is required to hold the license and insurance their state requires. We don’t ask homeowners to accept unpermitted work, and we pull permits where the job calls for them, whether you’re in Santa Clarita, Moreno Valley, or any other city we serve in Southern California. If you want to verify anything about our licensing or insurance for your specific project, call (361) 315-4177 and our team will get you the information you need.
When you call (361) 315-4177, a live coordinator connects you with the local Fielding ADU Builders team that covers your address in Los Angeles or the surrounding area. Our locations operate Monday through Friday from 7:00 AM to 7:00 PM and Sunday from 7:00 AM to 7:00 PM, and estimates are free. We’ll schedule a site visit at a time that works for you, then get your written estimate started.
Written by Reed Calloway, Owner at Fielding ADU Builders, serving Los Angeles and the surrounding Southern California market since 2006.

