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Helping San Diego Homeowners Add Connected Living Space
If you want more living space or rental income that uses your existing space, without building a separate backyard unit, attached ADU construction may be the right next step. IL Total Design & Build helps San Diego homeowners plan, design, permit, and build attached ADUs that connect to the main home while still giving the new space its own purpose.
We help with attached ADUs for family, guests, aging parents, adult children, housing flexibility, home offices, and private living areas. Our team looks at your property, current home layout, entrance options, privacy, utility access, setback rules, zoning laws, maximum size options, your goals, your budget, and what can be built before construction starts.
As a local ADU construction team in San Diego, CA, we handle the full process under one roof. That includes ADU design, floor plans, permit support, building permit preparation, city submittals, construction, and project coordination from the first consultation to the final walkthrough.
Design, Permits, and Build Under One Roof
A good attached ADU should not feel like a random room added to the house. It should feel comfortable, private, useful, and planned around your existing space. That takes smart design, clear drawings, permit knowledge, and a construction team that understands ADUs in San Diego.
IL Total Design & Build can help you understand if an attached ADU makes sense for your property. We can review your primary home, side yard, rear yard, access points, utilities, existing walls, rooflines, local code, zoning requirements, building code, fire safety, and city requirements before the project moves forward.
Our goal is simple. We help you build a fully functional ADU with less confusion, fewer handoffs, and one San Diego design build team responsible for design and construction. If you are comparing local ADU teams in San Diego, choose a company that can explain the process, protect your budget, and build an attached ADU that feels right for your home.
Our Services
Our ADU Building Process
Free Consultation
We assess your property, review your current home layout, and explain what type of attached ADU may be possible. This is a simple first step if you are considering an attached ADU project and want clear guidance before moving forward.
Most consultations take 30 to 45 minutes. You leave with a clearer picture of what may be possible on your property, including zone, setback, height, and basic requirement considerations.
Book NowPlan & Design
Our in-house architect designs your attached ADU within local rules, with permit-ready drawings prepared for review, approval, and compliance. This includes ADU floor plans, layout planning, privacy planning, interior planning, and the design phase.
Design and permitting under one roof means fewer handoffs, clearer planning, smoother approval, better compliance, and a smoother attached ADU process.
View ADU Design ServicesAttached ADU Construction
Once permits are approved and the scope is clear, our crew starts attached 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 craftsmanship, preparation, labor coordination, and doing the work the right way.
View ProjectsCompletion and ROI
Your attached ADU is ready for family, guests, rental income potential, or extra living space on your property. A completed attached ADU can also support long-term property value.
A completed accessory dwelling unit can create flexible housing, rental potential, and long-term value in the San Diego real estate market.
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See Our Recent Work
Our ADU construction projects include attached ADUs, 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 housing for family, rental income, or long-term property value, our team can help guide your project from design to construction.
Attached ADU Construction Tips
Read helpful articles about San Diego’s ADU permits, design, construction, attached ADUs, detached ADU planning, garage conversion options, state ADU law, local rules, coastal zone restrictions, affordable housing, and smart ways to plan your project in San Diego, CA.
Coastal ADU Builder in San Diego: Permits & 2026 Rules
Do You Have A Construction Project We Can Help With? Get a free quote What are you thinking of doing? Let's
Why San Diego ADU Quotes Vary by $100K+ (2026 Guide)
Do You Have A Construction Project We Can Help With? Get a free quote What are you thinking of doing? Let's
How Long Does It Take to Build an ADU in San Diego? (2026 Timeline)
From first meeting to move-in, most San Diego ADUs take 10–18 months. Here's an honest phase-by-phase breakdown — design, permits, construction — and the specific delays that stretch timelines.
Our Location
IL Total Design and Build is located in San Diego, CA, and helps homeowners across San Diego County with attached ADUs, ADU design, permit planning, garage conversion ADUs, detached ADUs, JADU planning, 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
Attached ADU Questions From San Diego Homeowners
Thinking about building an attached ADU? Here are simple answers about design, permits, construction, private entrances, and how IL Total Design & Build helps from start to finish.
We help San Diego homeowners plan, design, permit, and build attached 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.
An attached ADU is a secondary housing unit connected to the main home. It can include its own entrance, living area, bathroom, kitchen or kitchenette, and private space, depending on the plan and what your property allows.
Yes. We review your property, primary home layout, access, utilities, setback rules, existing structure, zoning requirements, and goals. This helps us explain what may be possible before you spend time and money moving deeper into the attached ADU construction process.
Yes. Permit support is part of our process. We help prepare plans, coordinate permit steps, and guide your attached ADU project through the required reviews before construction begins.
In many cases, yes. A private entrance can help the attached ADU feel more independent for family, guests, or rental use. We can review your layout and help plan access that works with your home.
Our attached ADUs are custom planned for your property. We do not use one basic layout for every project. The goal is to design and build an attached ADU that fits your home, your lot, and the way the space will be used.
The timeline depends on the property, design, permit review, utilities, site work, and construction scope. During your consultation, we can explain the main steps and give you a more realistic timeline based on your specific attached ADU project.
Attached ADU cost depends on size limitations, square footage, design, site conditions, utilities, finishes, access, and how the new space connects to the existing home. 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 attached ADU move from the first idea to completion.