ADU & Garage Conversion
Thinking about an ADU?
Check if you can build an ADU or convert your garage into a living space
ADU Builder in Simi Valley & Los Angeles County
ValleyBuild designs and builds high-quality Accessory Dwelling Units for homeowners looking to add value, space, and income. We manage the full ADU process from concept to completion, including plans, permits, and construction.
What Is an Accessory Dwelling Unit (ADU)?
An ADU is a separate living space built on your property. It can be a detached unit, an attached addition, or a converted garage. ADUs include a kitchen, bathroom, and living area, making them ideal for renting, family housing, or extra space.
Benefits of Building an ADU on Your Property
Building an ADU offers long-term value and flexibility:
Increase your home value
Generate rental income
Create housing for family or guests
Use space more efficiently
Take advantage of California ADU laws
Full-Service ADU Design and Construction
ValleyBuild is a design-build contractor. This means everything is handled in-house:
Site evaluation and feasibility
Architectural design and engineering
Permit submission and approval
Complete construction and inspections
You deal with one team from start to finish.
Custom ADU Floor Plans Built for Your Needs
We design ADUs based on your property size, budget, and goals. Options include:
Studio ADUs
One-bedroom ADUs
Two-bedroom ADUs
Garage conversions
Detached backyard ADUs
Every layout is customized and code-compliant.
Garage Conversion ADU Specialists
Garage conversions are one of the fastest ways to build an ADU. We convert existing garages into fully livable units while meeting all city and state requirements. This option saves time and reduces construction costs.
ADU Construction Process Made Simple
Our proven process keeps your project clear and organized:
Initial consultation and property review
Custom ADU design and planning
Permit approval with the city
Construction and final inspection
Move-in ready delivery
Why Homeowners Choose ValleyBuild for ADUs
Licensed and insured general contractor
Strong local permit knowledge
Clear pricing and timelines
Quality materials and finishes
Dedicated project management
We focus on clean work, strong communication, and lasting results.
ADU Cost and Budget Planning
ADU pricing depends on size, design, site conditions, and finishes. We provide clear estimates and help you plan smart upgrades that bring the best return on investment.
ADU Builder Serving Simi Valley, Ventura County & LA County
We proudly build ADUs in:
Simi Valley , Thousand Oaks, Moorpark, Westlake Village, Ventura County, Los Angeles County
Local experience helps us avoid delays and approval issues.
Schedule a Free ADU Consultation
Ready to build an ADU? Contact ValleyBuild today to schedule a free consultation. We’ll review your property, explain your options, and help you move forward with confidence.
Trusted by our customers on Google
How It Works
01
Design 3D
Every ADU project starts with a custom 3D design. We review your property, zoning, and ADU requirements, then create a clear layout that fits your needs. The 3D plans help you understand the size, flow, and design before construction begins.
02
Develop
After design approval, we prepare ADU plans, engineering, and permits. Our team builds the ADU from the ground up, including foundation, framing, plumbing, electrical, insulation, drywall, and finishes. All work follows California ADU codes and local city requirements.
03
Deliver
We complete the ADU construction, pass final inspections, and deliver a move-in ready unit. Your new ADU is built for long-term use, rental income, or family living, with quality materials and professional workmanship.
ADU Services FAQs
We provide full ADU design and construction services. This includes site evaluation, custom ADU plans, engineering, permits, foundation, framing, plumbing, electrical, insulation, drywall, finishes, and final inspection. We build complete, move-in ready ADUs.
Yes. ValleyBuild is a licensed, bonded, and insured general contractor in California. We follow all state ADU laws and local city building codes to ensure your ADU is built safely and legally.
The timeline depends on the city, permit approval, and ADU size. On average, design and permits take a few months, and construction usually takes several months after approval. We provide a clear timeline before starting.
We use quality materials and experienced trades. Every ADU is built to last, with proper inspections, clean workmanship, and attention to detail. Our goal is a durable ADU that adds real value to your property.
Yes. We help you choose the best ADU layout, size, and finishes based on your property, budget, and use case. We also provide 3D designs so you can see the ADU before construction begins.
Service Areas
Agoura Hills
Simi Valley
Calabasas
Thousand Oaks
Encino
Moorpark
WestLake
Oak Park
Hidden Hills
Woodland Hills
Tarzana
West Hills
Chatsworth
Porter Ranch
Northridge
Reseda
Van Nuys
Studio City
Los Angeles
