ADU Construction in the South Bay
An ADU is one of the biggest things you can add to your property — a detached backyard unit, a garage conversion, or a junior ADU inside space you already have. State law has made these much easier to build than they used to be. But an ADU involves more moving parts than most remodels: the city, the utility companies, and sometimes the wiring and pipes already on your lot. We have built enough of them to know where the surprises hide, and we tell you before you spend money on plans.
ADU Construction in the South Bay
An ADU is one of the biggest things you can add to your property — a detached backyard unit, a garage conversion, or a junior ADU inside space you already have. State law has made these much easier to build than they used to be. But an ADU involves more moving parts than most remodels: the city, the utility companies, and sometimes the wiring and pipes already on your lot. We have built enough of them to know where the surprises hide, and we tell you before you spend money on plans.
We expand your living space with exquisite ADU construction services.
Deco Construction offers top-tier Accessory Dwelling Unit (ADU) design and construction services to maximize your property's value and potential. Whether you are looking to build a detached backyard cottage, execute a garage conversion, or add an attached guest suite, our team brings a fine sense of aesthetics and expansive zoning experience to every ADU project in the South Bay area.
We blend contemporary design trends with smart, space-saving layouts to maximize your ADU's livability, storage, and natural light.
From independent structural foundations to exquisite interior finishes, we use high-quality materials to ensure your ADU is built to last.
Our step-by-step process handles everything from zoning laws to utility hookups, minimizing disruption to your primary home and completing the job on time.
Building an ADU requires more than just standard construction experience; it requires a dedicated team that understands local city setbacks, height restrictions, and utility requirements. We handle every single aspect of the build, from the initial architectural drawings and permit approvals to the final walk-through, ensuring your newly constructed ADU is exactly what you envisioned.
- Detached ADU Construction (Backyard Cottages)
- Garage Conversions (Attached & Detached)
- Attached Guest House Additions
- Junior ADU (JADU) Conversions
- Two-Story ADU Planning & Building
- Custom Floor Plans & Space Optimization
- Independent Foundation & Structural Framing
- Utility Hookups & Electrical Panel Upgrades
- Full Kitchenette & Bathroom Layouts
- Title 24 Energy-Efficiency Compliance
- 3D Architectural Space Previews
- HOA & City Permit Management
With 25 years of proven excellence, Deco Construction takes pride in delivering the most magnificent detached and attached ADUs. Trust us to increase your property’s value, rental potential, and overall functionality with a building experience that is both rewarding and stress-free.
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Building an ADU requires specialized zoning knowledge and expert coordination. Trust Deco Construction for an exquisite and fully compliant backyard home.
We Walk Your Lot First
Before you commit to anything, we come out and look at the property — setbacks, access for equipment, where the utilities run, and what your lot can support. This is where we catch the things that change a budget, like whether your electrical panel can handle a second unit or whether a separate meter is required. It is much cheaper to learn this on day one than after plans are drawn.
What Makes Us Stand Out?
Our top priority is customer satisfaction and we work closely with clients to understand their unique needs and goals.
Attention to Detail
Every square foot, custom utility line, and interior finish is meticulously checked for spatial efficiency and perfection by our skilled workers.
Safety First
We strictly adhere to the highest local building codes, fire separation rules, and zoning standards to protect your investment and property during the build.
25+ Years Experience
Over two decades of residential building experience allow us to effortlessly navigate the complexities of South Bay city permits and custom ADU regulations.
FAQ
Frequently Asked Questions
Got questions about your next residential structural upgrade? We have gathered direct answers to our most common inquiries regarding budget setups, planning structures, and project management timelines.
Most single-family lots in the South Bay can support some kind of ADU under current state law. The only way to know what yours can take is to walk it, which we do before you pay for anything.
It depends on the type, the city, and utility timelines, some of which are outside anyone’s control. We give you a real schedule once we have seen the property.
That is the conversation we have on the first visit. Each has different costs, timelines, and rules, and the right answer depends on your lot.
Deco manages the whole project. Design is in-house, and the construction is carried out by our team and the trusted trade partners we stand behind.
Thinking About an ADU?
Start with a lot walk-through, not a sales pitch. Call (310) 864-1200 or request a free estimate, and we will tell you what is actually possible on your property.