The Designer Guide
Your backyard is worth more than you think.
An accessory dwelling unit adds rental income, lasting value, and room for family — one licensed team designs, permits, and builds it. Learn how it works, then design yours in minutes.
Why build
One backyard. Three ways to win.
Monthly rental income
Southern California ADUs rent for roughly $2.90–$3.35 per sq ft — a 600 sq ft one-bedroom can bring in about $1,700–$2,000 every month, year after year.
Lasting property value
A permitted, new-construction ADU adds real square footage — and real equity — to your property, with potential tax advantages for rental use.
Room for the people you love
Aging parents, adult kids, guests, or a private office — a backyard home gives your family independence without distance.
The transformation
An underused backyard becomes a second home.
Real All Inclusive ADU projects — the same lot, before and after.
A wide, underused backyard becomes a modern one-bedroom rental.
Same lot, new income — a detached ADU tucked along the side yard.
What we build
Four ways to add a home.
Detached ADU
A stand-alone backyard home with its own entrance, kitchen, and real privacy — the highest square footage, rent, and resale value.
Up to 1,200 sq ftAttached / Bump-out
An addition built onto your existing home — ideal for tighter lots and lower budgets, matched to your house.
Seamless matchGarage conversion
Turn an underused garage into a fully permitted rental in the fastest timeframe — the structure already exists.
Fastest paybackJunior ADU
A compact unit carved from existing space — the lowest-cost path to rental income, skipping foundation and shell work.
Up to 500 sq ftPlan around $300 / sq ft, all-in — design, engineering, permits, construction, and standard finishes. Units under 750 sq ft are exempt from city impact fees by state law.
ADU 101 — California law
The state already said yes.
Allowed on nearly every lot
ADUs are legal in every residential zone in California — with no minimum lot size. If you own a home, you can almost certainly build one.
Guaranteed square footage
Every city must approve at least 850 sq ft (studio / 1-bed) or 1,000 sq ft (2-bed+). Many allow detached ADUs up to 1,200 sq ft.
4-foot setbacks
Your ADU can sit just 4 feet from side and rear property lines, up to 16–18 feet tall — most backyards qualify.
Your garage counts
Legally built garages and accessory structures can be converted — or demolished and rebuilt as an ADU in the same footprint.
No one can veto it
HOAs can't prohibit an ADU, neighbors' sign-off isn't required, and you don't have to live on the property to rent it out (30-day+ rentals).
Usually no extra parking
Conversions need no new parking, and new ADUs near transit are exempt too. When one space is required, a tandem driveway spot counts.
Current as of 2026 state ADU law. Every city adds its own details — we confirm exactly what your lot allows, free, before you commit to anything.
Your ADU journey
Move-in ready in about six months.
Free consultation
On-site assessment of your lot, goals, and budget — and a fixed-price quote.
Design & permits
Custom plans drawn and city permits secured — all handled in-house.
Construction
One dedicated crew, one project manager, one clear timeline.
Move-in & beyond
Final walkthrough, keys in hand, and a 365-day warranty behind every build.
“I own several rentals and wanted ADUs on three of them. All-In handled the entire package with one crew and one timeline — I never had to chase down a separate contractor for each property.”
Finished work
The finishes you’ll design — already built.
Every kitchen, bath, and detail in the designer comes from real All Inclusive ADU projects like these.
Financing
You may not need to pay out of pocket.
We work with preferred lenders who specialize in ADU and renovation financing. Many homeowners get approved using their existing home equity — we'll connect you and help you compare options as part of your free consultation.
Design your ADU in minutes.
Pick your layout, style, and finishes and watch your estimate update live. Get your detailed line-item breakdown free — no obligation.