Your backyard.
A beautiful new ADU.
Transparent pricing.
Garage conversions. Detached ADUs. Custom designs. Fixed-price, permit-ready plans by our in-house ADU designers — then build it your way, all across Los Angeles.
15 minutes · No obligation
ADU plans.
One fixed price.
Each Signature Home is a fixed-price, permit-ready plan set — architect-designed, refined from 126 Los Angeles projects. From a 400-square-foot studio to a 1,200-square-foot three-bedroom two-story.
The Wilshire
The Sunset
The Westwood
The Laurel Canyon
The Melrose
The Lincoln
The Fairfax
The Venice
The Culver
A finished design. Not a guess.
Most ADU companies sell you a quote. We deliver a complete, permit-ready plan set — designed by our in-house ADU designers, fixed in price, and backed by nearly a decade of Los Angeles ADU design and permitting. You build it yourself, bring your own licensed contractor, or build with one of our vetted construction partners.
Fixed-Price Plans, Always
Your plan fee is fixed and agreed before you commit — design plus full permit processing, for one clear number. The only thing that changes it is a change you ask for. Construction is a separate cost; we give you an independent-GC estimate up front so you can budget the build with the same clarity.
Built On Site, On Your Lot
Every Signature Home is designed to be built on your property by a Los Angeles framing crew — not trucked in from a factory. That means no truck access requirement, no crane staging, no neighborhood lots that don't qualify. If a contractor can build a backyard deck there, a Signature Home fits there.
The Two-Story Advantage
Some of our Signature Home plans are full two-story ADUs. No prefab ADU company offers a two-story design — factory and transport constraints don't allow it. On a tight Los Angeles lot, going up instead of out is the difference between a rental and a home.
The certainty of prefab.
The flexibility of custom.
Built for Los Angeles.
Most homeowners building an ADU end up choosing between two compromises. CALI ADU is built to be the third option.
Prefab ADUs
Fast, polished, but constrained.
Factory-built and trucked to your site. Pricing is predictable and timelines are short. But floor plans are locked — usually one or two options — and almost never two stories. Many Los Angeles lots can't accept the truck access or crane footprint required to set the modules. The home that arrives is the home you got.
Custom Construction
Flexible, but uncertain.
A home designed by our in-house ADU designers, drawn one-of-one for your lot. The floor plan is whatever you want it to be. But the design fee is open-ended, the build price is an estimate that becomes a real number eight months later, and the timeline depends on how many trades the contractor can keep moving. Custom ADU projects in Los Angeles routinely come in well over the original budget.
CALI ADU Signature Homes
The product approach to a custom build.
Architect-designed floor plans, refined from 126 Los Angeles ADU projects. Several are full two-story homes. All are designed to be built on site for your lot — no truck access required. Your plan fee is fixed before you commit, and you build it yourself, with your own licensed contractor, or with one of our vetted construction partners. And you'll have walked through your home in our 3D model before construction starts.
See the Signature Homes →
See your ADU. In your backyard.
Pick any model, see it placed on your actual lot to scale, and walk through the interior in 3D — all in a 15-minute Backyard Review.
Designed in-house · Transparent pricing · Your choice of builder
Four steps. One team. One fixed plan price.
Backyard Review
A 15-minute video call where we place any Signature Home on your actual lot so you can see exactly how it fits. We cover setbacks, placement options, and which models work for your property.
You receive a site mockup showing your ADU in your backyard.
Design & Contract
Choose your model, interior finishes, and exterior style. We finalize the site plan, coordinate the structural engineering, and lock your design and scope into a clear written agreement.
You receive a finalized site plan and a clear written design-and-scope agreement.
Permitting
We submit, track, and expedite your permit through your city's building department. You pay city fees at cost — no markup. Our pre-engineered plans mean fewer corrections and faster approvals.
You receive an approved building permit.
Build & Move In
Your permitted plans are yours. Build the ADU yourself, bring your own licensed contractor, or build with one of our vetted construction partners — you contract construction directly with the builder, at the estimated cost to build.
Your ADU gets built and you move in.
More home.
Same footprint.
Several of our Signature Homes — The Fairfax, The Venice, and The Culver — are full two-story ADUs. On a Los Angeles lot where every square foot of yard is precious, going up instead of out means a larger ADU, more yard, and more rental or resale value.
CALI ADU is the only Los Angeles ADU company offering a full two-story plan lineup at fixed pricing. No prefab ADU company can do two-story — factory and transport constraints don't allow it. If you want a two-story ADU in LA, your options are fully custom or one of our Signature Home plans.
One of one.
Most of our clients find the right fit in the Signature ADU Plan lineup. Occasionally, a lot, a vision, or a lifestyle calls for something entirely its own.
For a small number of clients each year, we design fully custom ADUs — the same team, the same standard of craft, shaped to your exact brief. The 1,200 sqft Mediterranean two-story above, with its 600 sqft rooftop deck on a tight West LA lot, is one example. Custom projects begin with a design fee and a conversation. If your project is a fit, we will tell you. If a Signature ADU plan would serve you better, we will tell you that too.
Built across Los Angeles.
Designed and built across Los Angeles — every neighborhood, every lot condition, every style.
In their words.
"We had a TERRIFIC experience with Charlie at CALI ADU. He was efficient, communicative and provided us with great blueprints for our garage conversion… Highly recommend working with him."
"I am so happy we chose CALI ADU to design and build our garage ADU… The consistent communication is so appreciated, and the outstanding quality of their work is exactly like the pictures."
"Charlie is professional, and he was always accessible when we had questions. He is adaptable and patient with changes. My wife and I highly recommend Charlie."
"Their design was perfect for the property and my budget, they kept me updated on the progress and promptly responded to my inquiries."
"We love it! The work crews were outstanding and the quality of the materials and craftsmanship is excellent."
"Highly recommend if you want a boutique experience!"
Before you book a call.
How does CALI ADU's pricing work?
How long does an ADU take from start to finish?
What happens if construction runs late?
Can I use an ADU as a rental?
Do I qualify for an ADU on my lot?
Can I customize a Signature Home?
See your ADU. In your backyard.
Pick a Signature Home, see it placed on your actual lot, and walk through the interior in 3D. 15-minute Backyard Review. No commitment required.
Designed in-house · Transparent pricing · Your choice of builder