Frequently Asked Questions - ADU
Straight answers to the questions Los Angeles homeowners ask us most about accessory dwelling units. If you don't see your question here, call (903) 568-7222 and we'll talk it through.
Pricing & Cost FAQs
An attached ADU conversion in Los Angeles typically runs $180,000 to $260,000, while a detached new-build unit usually falls between $250,000 and $380,000 depending on size, site conditions, and finishes. Those ranges reflect what we see across LA neighborhoods including the Westside, the Valley, and South LA. Your specific cost depends on whether you're converting a garage, building over an existing structure, or starting fresh on a sloped lot. Benson ADU Builders gives every project a written price before any work starts, so the number you approve is the number you pay. Call (903) 568-7222 for a free estimate based on your property.
A garage conversion is almost always the cheapest ADU path in Los Angeles, typically starting around $150,000 to $190,000 when the existing structure is sound. The foundation, framing, and roof are already there, which eliminates some of the largest line items. Detached new construction costs more because you're paying for everything from excavation to roof. Site work can shift the math quickly in hilly areas like Mount Washington or Echo Park, where grading and retaining walls add real cost. We'll walk you through which approach makes sense for your lot and your budget. The estimate is free, so call (903) 568-7222 to start.
Yes, when Benson ADU Builders prices your ADU, the written quote includes permit fees, plan-check costs, utility connections, and all required inspections. We don't hand you a low number and then surprise you with add-ons. LA Department of Building and Safety fees vary by project scope, and we account for them up front. Sewer, water, and electrical connections are line items in your estimate, not afterthoughts. If anything changes during the job, you'll see it in writing before we proceed. For a detailed breakdown specific to your property, call (903) 568-7222.
ADU costs are fairly similar across LA County and Orange County, generally within 5 to 10 percent of each other. Long Beach and Anaheim tend to track slightly lower than Los Angeles on labor, while hillside cities like Santa Clarita can run higher due to grading and soil work. What changes most between cities is the permit process and local fees, not the construction itself. Benson ADU Builders provides written pricing that reflects the specific requirements of whichever city your property sits in, from Long Beach to Riverside to Irvine. Call (903) 568-7222 for a number tied to your address.
No. Benson ADU Builders puts the price in writing before any work begins, and that's the price you pay unless you ask us to change the scope. If we uncover something unexpected behind your walls or under your slab, we show you photos, explain the issue, and give you a written change before touching anything else. You approve or decline. No surprise invoices at the end. This is what the Relay Visibility Guarantee means: a written price, photo updates along the way, and a digital invoice you can pay from your phone. To see our pricing structure in writing, call (903) 568-7222.
Service & Process FAQs
The process starts with a site assessment of your Los Angeles property, followed by design, permit submission to LA Department of Building and Safety, construction, and final inspection. We handle all of it. After the initial consultation, we produce a written estimate, then drawings, then the permit package. Once permits are approved, construction typically runs four to seven months for a detached ADU and three to five months for a garage conversion. You'll get photo updates at every major milestone. To see a timeline specific to your project, call (903) 568-7222.
No, you don't need to be home. Most of our Los Angeles clients keep their normal schedules while we build. You'll receive photo updates before and after each phase of work, and your written quote means you won't be asked to approve anything in person that you haven't already seen on your phone. We coordinate access for inspections and keep the site clean and secure at the end of each day. If you do want to stop by, your project manager can arrange a walkthrough. Questions about how we manage your specific site? Call (903) 568-7222.
A detached ADU in Los Angeles typically takes four to seven months from permit approval to final inspection. Garage conversions usually complete in three to five months. The permit phase itself can run two to four months depending on the city's current workload, and that's before any construction starts. Hillside lots with grading requirements in neighborhoods like Baldwin Hills or Silver Lake can add a few weeks. Benson ADU Builders gives you a written timeline with your written price, and you'll see photo updates throughout so you always know where things stand. Call (903) 568-7222 for a timeline specific to your project.
Yes, Benson ADU Builders prepares and submits the full permit package to LA Department of Building and Safety and manages it through approval. We draw the plans, coordinate structural and energy calculations, and respond to plan-check comments. You don't stand in line or chase down reviewers. Los Angeles has specific ADU standards under state law, and we build to those standards every day across the city, from the Valley to the Westside. Permits are included in your written estimate. Ready to see what your property qualifies for? Call (903) 568-7222.
Yes. The Relay Visibility Guarantee means you get a live arrival time before any crew shows up, photo updates of the work before and after, and a digital invoice you can pay from the link we text you. You won't chase anyone for status updates. This is how Benson ADU Builders works on every project, in every city we serve, from Los Angeles to Huntington Beach to Fontana. You'll know who is coming, when they'll arrive, and what the work costs. To experience this process from the first estimate, call (903) 568-7222.
Brands & Parts FAQs
We specify materials based on what performs best in Southern California's climate, and we're experienced with leading manufacturer systems. James Hardie siding is a common choice on detached ADUs since it holds up to sun and moisture without warping, and we use it on many exteriors across Los Angeles. For clients interested in prefab or panelized construction, we work with Abodu and Cover systems where they fit the site and budget. The right brand depends on your project type, lot access, and design goals. We'll make a specific recommendation in your written estimate. Call (903) 568-7222 to discuss options.
Yes, you choose your finishes. Benson ADU Builders provides a base specification in your written quote, then you select flooring, tile, fixtures, and paint within the allowances we set together. If you want something above the allowance, we show you the cost difference in writing before ordering. This keeps your budget controlled while letting you personalize the unit. Many clients in Los Angeles mix standard finishes with a few upgrades in the kitchen and bath where it matters most. To see our standard spec sheet and finish options, call (903) 568-7222.
Prefab ADUs from brands like Abodu or Cover can reduce on-site construction time, but they aren't always cheaper than conventional building once site work, foundation, utility connections, and installation are included. A prefab unit's factory cost is only part of the total. On tight Los Angeles lots with difficult access, a panelized or modular approach can save weeks and reduce neighbor disruption, which some homeowners value more than a small cost difference. We'll compare both paths for your specific property and show you the numbers side by side. Call (903) 568-7222 for a written comparison.
James Hardie fiber cement siding performs well across Los Angeles because it resists sun damage, doesn't warp in dry heat, and handles the occasional heavy rain without swelling. The local climate, with intense UV exposure and low humidity, is hard on wood and vinyl, so we lean toward fiber cement on most detached ADUs. Stucco remains popular too, especially on Spanish-style homes in neighborhoods like Los Feliz. Your exterior choice should match your main house and your long-term maintenance tolerance. We'll recommend the right material for your site. Call (903) 568-7222 to talk it through.
Licensing & Insurance FAQs
Every pro working under the Benson ADU Builders name is required to hold the license and insurance their state requires. We make sure your project is covered before anyone steps onto your Los Angeles property. You're welcome to ask for proof of licensing and insurance before signing anything, and we'll provide it. This is a standard we hold across every location, from Los Angeles to Anaheim to Santa Ana. Builder's risk coverage during construction is also part of our standard process. To verify credentials for your specific project, call (903) 568-7222.
Yes. Every ADU we build in Los Angeles is permitted through the proper city authority. That means plans approved by LA Department of Building and Safety, inspections at every required stage, and a final certificate of occupancy when the unit is done. Unpermitted work can block future refinancing, sale, or insurance, and it's not something we'll ever recommend. The permit package is included in your written price. Building a legal ADU protects your property value and your family. To confirm the permit path for your lot, call (903) 568-7222.
Benson ADU Builders coordinates every trade on your project, from foundation and framing to electrical, plumbing, and finish work. You won't be hiring separate contractors or chasing schedules. Each trade working under our name is required to hold the license and insurance their state requires. Your project manager handles scheduling, inspections, and quality checks, and you'll see photo updates as each phase completes. We've built this process across Los Angeles, Long Beach, Riverside, and the surrounding cities, and the experience shows. Call (903) 568-7222 to discuss your project.
Emergency & Response FAQs
You call us, and we respond. If there's a water leak, an electrical issue, or any safety concern during construction on your Los Angeles property, your project manager is your single point of contact. We'll send someone out, document what happened in photos, and fix it under the terms of your project. The Relay Visibility Guarantee means you're never left wondering what's happening. You'll have the written scope, the photo record, and a clear path forward. Our business hours are Monday through Friday 7:00 AM to 7:00 PM and Sunday 7:00 AM to 7:00 PM. Call (903) 568-7222 during those hours and we'll take care of you.
Yes, Benson ADU Builders can assess an existing ADU on your Los Angeles property and tell you what's working, what needs repair, and whether it was built to current code. Many older garage conversions in LA were done without permits, and we can explain your options for bringing one up to standard. The assessment includes a written summary of findings and a repair or upgrade estimate if needed. If you're planning to rent the unit, this inspection is a smart first step toward legal rental income. Call (903) 568-7222 to schedule a property review.
Benson ADU Builders serves all of Los Angeles and the surrounding cities, including Long Beach, Anaheim, Riverside, Irvine, Santa Ana, Santa Clarita, San Bernardino, Fontana, Moreno Valley, Oxnard, and Huntington Beach. Each area has its own permit office, hillside rules, and soil conditions, and our team works with the local requirements in each one. Whether your lot is flat in the Valley or sloped in the foothills above Santa Clarita, we'll price the project with those conditions in mind. To confirm coverage for your address, call (903) 568-7222.
Warranty & Guarantees FAQs
Your ADU project is covered by a workmanship warranty on the construction we perform, and manufacturer warranties apply to the materials and systems we install. The specific terms depend on your project scope and are detailed in your written contract before work starts. We don't bury the warranty in fine print or make you ask for it later. You'll see exactly what's covered and for how long, in writing, as part of your project documents. To review warranty terms for your planned ADU, call (903) 568-7222 and we'll walk you through them.
The Relay Visibility Guarantee is the promise every Benson ADU Builders location works to: total visibility on your project. You get a live arrival time you can track to your door, photo updates of the work before and after, and a written price before anything starts. You always know who is coming, when they will be there, and what it will cost. It's not a marketing slogan. It's how we run every project, in every city we serve, and it's stamped on every estimate and contract. To experience it from the first call, dial (903) 568-7222.
After your ADU is complete, workmanship issues on the construction we performed are covered under your project warranty. Major systems like roofing, windows, water heaters, and appliances carry their own manufacturer warranties, and we provide you all the documentation at handover. If something fails, you call us, we document it, and we coordinate the fix. You won't be told to call a separate manufacturer and figure it out alone. The terms are in your written contract before construction starts. Call (903) 568-7222 to discuss warranty specifics for your project.
Yes, we can connect you with past clients who have built ADUs similar to yours in the Los Angeles area. Talking to a homeowner who has already been through the design, permit, and construction process is one of the best ways to know what to expect. We're proud of the work we've done across LA County and Orange County, and our clients tend to be generous with their time. We'll arrange the connection once you have a written estimate in hand. To get started, call (903) 568-7222 and schedule your free estimate.
Written by Troy Eastman, Owner at Benson ADU Builders, serving Los Angeles and surrounding cities since 2006.
Still Have Questions?
We are happy to help. Call us - same-day and after-hours emergency service available.
(903) 568-7222