Backyard Cottages in Orange County
A charming standalone backyard home — the cottage-style take on a detached ADU.
A backyard cottage is a detached ADU with character — a standalone home in your yard with its own entrance, kitchen and bath, designed to feel warm and complement your property. Before choosing a cottage layout, confirm the detached build envelope, setbacks, construction access, utility path, drainage, trees, privacy and whether coastal, hillside, HOA or fire-zone rules apply.
Real ADU build examples from the Orange County & Los Angeles area
Browse L Square ADU work across multiple completed examples, including exterior details, interiors and finish inspiration.
View real ADU construction examples
What a backyard cottage is
It’s a detached ADU — a fully separate small home with its own entrance, kitchen and bathroom — styled as a cottage rather than a plain box.
Design & character
We design the cottage to match or complement your main house and sit naturally in the garden, with finishes and a roofline that feel intentional, not catalog.
Cost, sizes & permits
Cottages range from compact studios to larger two-bed layouts. Cost scales with size, finishes, site work and utility distance. Compare detached layouts with the custom ADU page, 1,200 sq ft ADU guide, California ADU cost guide and Orange County permit guide.
Why build with L Square
Design, permits and construction under one roof. L Square is a licensed Orange County design-build team (CSLB #1095476). One contract covers architecture, engineering, city approvals and our own build crews — so your ADU moves on a fixed schedule from first drawing to final inspection, across Orange County and Los Angeles.
- 01 · Architect-grade design
- Every unit is drawn around your lot, light and privacy.
- 02 · Permit-ready, OC-savvy
- We know each city’s ADU rules and clear the approvals for you.
- 03 · Built once, built right
- Our own crews deliver on a fixed schedule, foundation to finishes.
Licensed · Insured · Bonded · CSLB #1095476 · Orange County & Los Angeles
Frequently asked questions
Is a backyard cottage the same as a detached ADU?
How big can it be?
What’s the cost range in OC?
Can it match my house style?
What’s the permit process?
Building an ADU in your Orange County city
ADU rules vary by city — we handle the specifics for your address. Statewide, California allows ADUs up to about 1,200 sq ft with 4-ft side and rear setbacks (CA HCD); your city may add its own details. For the statewide rules, see the CA HCD ADU Handbook.
Ready to start
your ADU?
Get a free, no-pressure quote from a licensed Orange County design-build team — and a plan drawn around your lot.
