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Helping Homeowners Build Smarter Living Space
If you are looking for an ADU builder in San Diego, IL Total Design & Build can help you plan, design, permit, and build your ADU from start to finish.
We help San Diego homeowners create custom accessory dwelling units that add living space, support family needs, and improve long term property value. Whether you want a detached ADU, garage conversion, granny flat, guest house, backyard cottage, or backyard home, our experienced team can guide your ADU project from the first idea to final construction.
As an ADU contractor in San Diego County, we handle the full process under one roof. That includes ADU design, ADU floor plans, permit support, city submittals, and ADU construction. If you are considering an ADU, we can help you understand what is possible on your property in San Diego before you move forward.
Top ADU Builder in San Diego County
Building an ADU in San Diego takes more than basic construction knowledge. You need an ADU builder who understands design, property layout, local rules, ADU regulations, permit requirements, and how to move an ADU project forward without confusion.
IL Total Design & Build works with homeowners across San Diego County who want to build an ADU, add an ADU, or turn unused space into a functional ADU. Our team helps you understand what can fit on your property, what type of ADU makes sense, and what steps are needed before construction starts.
If you are comparing the best ADU builders in San Diego, our goal is simple. We want to give you clear guidance, strong design, organized permit support, and quality construction from design to completion. We are also a San Diego ADU contractor that understands how homes in San Diego can benefit from smart ADU design build planning.
Our Services
Our ADU Building Process
Free Consultation
We assess your property, explain what can be built, and give you a real cost estimate with no obligation. This is a simple first step if you are considering an ADU project or looking to build an ADU.
Most consultations take 30 to 45 minutes. You leave with a clearer picture of what is possible on your lot.
Book NowPlan & Design
Our in house architect designs your ADU within local rules, with permit ready drawings prepared for review. This includes ADU floor plans, layout planning, and the design phase.
Design and permitting under one roof means fewer handoffs, clearer planning, and a smoother ADU process.
Learn MoreConstruct
Once permits are approved and the scope is clear, our crew starts ADU construction with steady communication. We keep the build process organized so you know what is happening next.
You get a detailed scope of work, project updates, and a team focused on doing the work the right way.
View ProjectsCompletion & ROI
Your ADU is ready for family, guests, rental income potential, or extra living space on your property. A completed ADU can also support long term property value.
A completed ADU can create flexible living space, rental potential, and long term property value.
Get Started
See Our Recent Work
Our ADU builds include detached ADUs, garage conversion ADUs, custom ADU designs, and accessory dwelling units built for rental income, family use, and long term property value.
Areas We Serve
IL Total Design & Build helps homeowners across San Diego and nearby communities plan, permit, and build ADUs. Whether you are building extra living space for family, rental income, or long term property value, our team can help guide your project from design to construction.
Latest News
In California ADU laws, practices, trends, & legislation
San Diego Military ADU Playbook: Put Your BAH to Work (2026)
Do You Have A Construction Project We Can Help With? Get a free quote What are you thinking of doing? Let's
Prop 19 & ADUs in San Diego: Protect Your Tax Basis (2026)
Do You Have A Construction Project We Can Help With? Get a free quote What are you thinking of doing? Let's
AB 1033 in San Diego: How the New ADU Condo Law Works in the City and Unincorporated County (2026 Guide)
AB 1033 in San Diego: How the New ADU Condo Law Works in the City and Unincorporated County Short answer: As of 2026, AB 1033 is live in both the City of San Diego (effective
Our Location
IL Total Design and Build is located in San Diego, CA, and helps homeowners across San Diego County with ADU design, permit planning, garage conversion ADUs, detached ADUs, and accessory dwelling unit construction. From design and permits to construction, our team helps you plan your project clearly and move forward with confidence.
- IL Total Design and Build
- 9655 Granite Ridge Dr #200, San Diego, CA 92123
- (619) 404-0125
ADU Questions From San Diego Homeowners
Thinking about building an ADU? Here are simple answers about design, permits, construction, garage conversions, and how IL Total Design & Build helps from start to finish.
We help San Diego homeowners plan, design, permit, and build ADUs. Our team handles the project from the first property review to final construction, so you do not have to manage separate designers, permit help, and builders.
We help with detached ADUs, garage conversion ADUs, custom ADUs, granny flats, guest houses, backyard homes, and ADUs over garages. Every ADU is planned around your lot, your goals, and how you want to use the space.
Yes. We start by reviewing your property, existing structures, access, layout, and goals. This helps us explain what may be possible before you spend time and money moving deeper into the ADU process.
Yes. Permit support is part of our process. We help prepare the plans, coordinate the permit steps, and guide your ADU project through the required reviews before construction begins.
Yes. A garage conversion can be a smart way to add living space using an existing structure. We can help turn a garage into a functional ADU, guest space, rental unit, home office, or bedroom layout when the property allows it.
Our ADUs are custom planned for your property. We do not just drop a standard box in your yard. The goal is to design and build an ADU that fits your lot, your main home, and the way the space will be used.
The timeline depends on the property, design, permit review, and construction scope. During your consultation, we can explain the main steps and give you a more realistic timeline based on your specific ADU project.
ADU cost depends on size, design, site conditions, utilities, finishes, and whether it is detached, attached, or a garage conversion. We start with a property review so you can understand the likely budget before moving forward.
You work with one local team for design, permits, and construction. That means fewer handoffs, clearer communication, and one group responsible for helping your ADU move from the first idea to the final walkthrough.