Creating an Accessory Dwelling Unit (ADU) is an excellent way to expand your living space, accommodate family, or generate rental income. But without proper planning, an ADU project can become complicated, costly, or non-compliant with local codes.
At A1 ADU Contractor, we offer end-to-end ADU design services that ensure your project is functional, stylish, and built to last. From initial concept to permit-ready plans, our team provides expert guidance and customized solutions tailored to your property.
A1 ADU Contractor specializes in transforming homes with expertly designed ADUs. Our licensed and insured team brings years of experience, turning ideas into practical, code-compliant living spaces.
We focus on delivering solutions that are:
Whether it’s a garage conversion, backyard unit, or detached ADU, we tailor every design to maximize space and functionality.
My garage was just wasted space before this project. The transformation into a livable ADU was done quickly and looks high quality. Every visitor thinks it’s a brand new build, not a conversion.
We are thrilled with the ADU renovation A1 ADU Contractor completed for us. Chris was incredibly knowledgeable and guided us through the whole process seamlessly. The quality of work exceeded our expectations, and we couldn't be happier with our new space!
We wanted a backyard ADU for rental income, and choosing an A1 ADU Contractor in Sherman Oaks was the best move we made. They were patient with all our questions and helped us design something that truly fit our lot. Even after some light winter rain, they kept everything moving smoothly. The craftsmanship is solid and you can tell they care about the details. The space feels modern yet comfortable. We’re beyond grateful and would recommend them without hesitation.
I hired a contractor to build an accessory dwelling unit in my backyard. From the first consultation to the final walkthrough, the team was professional and knowledgeable. They helped design the unit efficiently, handled all permits, and kept the construction site organized and clean. The quality of work exceeded my expectations, and the project was completed on time. I’m extremely happy with the result.
We replaced our roof this winter in Sherman Oaks and couldn’t be happier. The team was respectful, hardworking, and detail-oriented. Even with occasional rain, they stayed organized and careful. Our home feels safer and looks refreshed. We highly recommend them for anyone needing roofing work.
We hired an A1 ADU Contractor in Sherman Oaks to build a detached ADU in our backyard, and the whole experience honestly exceeded our expectations. Even with the cooler winter mornings and a few rainy days, the crew stayed on schedule and kept everything clean and organized. They explained every step in simple terms so we always knew what was happening. The new space feels warm, bright, and perfect for our in-laws. It’s amazing how smoothly everything went from start to finish. We’re so happy with the final result and highly recommend them to anyone thinking about building an ADU.
I recently hired A1 ADU Contractor for a remodeling project at my home in Sherman Oaks and I couldn’t be happier with the results From the initial planning to the final walkthrough the team was professional communicative and detail oriented They truly did an amazing job bringing my vision to life. If you’re looking for a reliable contractor in the Valley I highly recommend them
Team worker made the process painless. The garage door conversion turned out seamless . Thanks a lot good service
I had a stressful lockout situation late at night, but AJ Locksmith is a game-changer. I called their emergency number, and the person I spoke with was calm and courteous. The locksmith, Robert, called when he was on his way and arrived in under 20 minutes. He was extremely professional and friendly, taking one look at the situation and unlocking my door without damaging anything. The best part was that the final cost was exactly as quoted over the phone. No surprise charges or hidden here somsd. I would highly recommend this company to anyone in need of a reliable emergency locksmith.
Professional team delivering solid ADU construction, clear communication, dependable timelines, and quality workmanship.
Expertise matters when planning an ADU. A1 ADU Contractor is fully licensed, bonded, and insured, giving you confidence throughout your project.
Homeowners choose us because we:
Our reputation is built on professionalism, precision, and client satisfaction.
A successful ADU starts with a detailed evaluation of your property. We assess:
Identify the most functional and efficient placement for your ADU.
Ensure your project complies with local building codes and HOA rules.
Assess water, electricity, and HVAC requirements for seamless integration.
Evaluate existing foundations and structures for safety and durability.
eate a living space that complements your home and neighborhood.
We start with an in-depth walkthrough, discussing your goals and evaluating potential ADU sites on your property.
Our team develops tailored layouts, considering structural, utility, and zoning requirements. Plans are designed for efficiency, style, and practicality.
We provide detailed design packages and estimates ready for permits and construction. Our plans guide your project smoothly from concept to completion.
Creative, multi-functional design layouts
Expert code-compliant planning
Professional evaluation and reinforced design
Efficient water, electrical, and HVAC planning
Designs that blend seamlessly with your main home
Each solution is fully customized to your property for maximum efficiency and style.
A1 ADU Contractor combines proven design methods, professional tools, and client-focused processes to deliver reliable results.
We’ve helped countless homeowners transform garages and backyards into functional, stylish ADUs. Every project begins with a thorough assessment and results in an efficient, compliant, and attractive living space.
Before & After ADU Design Examples
Customers praise A1 ADU Contractor for:
Our consistent 5-star reviews reflect our commitment to delivering high-quality ADU designs that meet every client’s goals.
Whether it’s a single-family home or multi-unit property, A1 ADU Contractor provides complete ADU design services. Every plan is tailored to maximize space, comply with regulations, and add lasting value.
An expertly designed ADU can transform your home and lifestyle. Contact A1 ADU Contractor today for professional ADU design services, permit-ready plans, and practical solutions that make your project stress-free and successful.
Call now or fill out our contact form to schedule your consultation!
The cost comparison between building an Accessory Dwelling Unit (ADU) and adding a traditional home addition is complex and highly location-dependent. Generally, a detached ADU can be more cost-effective per square foot than a high-end primary home addition, as it often uses simpler construction methods and materials. However, costs for both are heavily influenced by site conditions, foundation work, utility connections, and local permit fees. A key financial advantage of an ADU is its potential to generate rental income, which can offset the construction cost over time. For a detailed breakdown of the trade-offs between these two options, including long-term value considerations, we recommend reading our internal article The Pros And Cons Of Garage Conversion Vs. Home Addition.
Yes, Nevada does allow Accessory Dwelling Units (ADUs). State law, particularly through Assembly Bill 341 effective from October 2021, requires most larger cities and counties to permit ADUs in single-family residential zones. This legislation aims to increase housing availability. Key provisions typically include allowing one ADU per lot, which can be attached, detached, or a conversion of existing space like a garage. Local jurisdictions, such as Las Vegas, Henderson, and Reno, have adopted their own specific ordinances governing ADU size, parking, owner-occupancy requirements, and design standards. It is crucial to consult with the local planning department to understand the precise rules, permit process, and any recent updates to the code before starting a project.
Common mistakes when building an Accessory Dwelling Unit (ADU) often stem from inadequate planning and cutting corners. A major error is failing to secure proper permits, which can lead to costly fines and work stoppages. Many homeowners also underestimate the budget, not accounting for site prep, utility connections, and finishing costs. Choosing the wrong foundation or improper insulation for the climate are critical structural oversights. Critically, DIY electrical work is a frequent and dangerous pitfall. For safe and code-compliant installation, professional guidance is essential. We cover this in detail in our internal article, How To Handle Electrical Wiring In Garage Renovations. Finally, neglecting to consider parking requirements, privacy for both units, and long-term maintenance can create significant issues post-construction.
The cost comparison between building an ADU and buying a prefab unit is nuanced. Generally, a prefabricated ADU can be cheaper upfront due to controlled factory construction, which reduces material waste and labor time. However, site-built ADUs offer greater customization and may better integrate with an existing property's architecture, potentially increasing property value more significantly. Total costs for either depend heavily on site-specific factors like foundation work, utility connections, permits, and local regulations. A prefab might have lower construction costs but higher transportation and crane fees. A comprehensive budget must include all soft costs—design, permits, engineering, and site prep—for an accurate comparison.
Our service areas include: Glendale, Burbank, Van Nuys, North Hollywood, Reseda, Bel Air, Mission Hills, Sylmar, Pacoima, Sun Valley, Sherman Oaks, Encino, Studio City, Panorama City, Canoga Park, Tarzana, Valley Village, Toluca Lake, San Fernando, Valley Glen, Lake Balboa, Granada Hills, Winnetka, North Hills, the San Fernando Valley, and throughout Los Angeles County.
13701 Riverside Dr #200, Sherman Oaks, CA 91423
Based in Sherman Oaks, CA, we are your trusted partner ADU building and transforming garages into functional and beautiful spaces. Serving the San Fernando Valley and Los Angeles County.
Sun – Fri: 9AM to 5PM
Sat: Closed
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