ADU Builders in Irvine, California
Whether you want a rental unit, a home for aging parents or a studio for adult kids, building an ADU in Irvine has never been easier under California's ADU laws. Our team plans every project around the ocean breezes near the coast and warmer foothill valleys typical of Irvine.
Typical cost
$186k–$421k
Permit time
8–14 weeks
Est. rent
$2,250+/mo
Population
314,000
Popular ADU types in Irvine
Our most requested projects in Irvine are two-story ADUs over garages and detached backyard cottages. Many Irvine parcels built between the 1950s and 1980s have wide rear yards that fit an 800–1,200 sq ft detached unit without touching the main house.
Design-wise, Irvine homeowners in the Orange County tend to favor clean coastal contemporary and Mediterranean styles that satisfy HOA-minded neighbors.
Building an ADU in Orange County
Every Irvine ADU we build is engineered around local conditions — especially HOA covenants, coastal commission review and tract-home utility layouts. We prepare complete plan sets so the city can approve within the state's 60-day review window, typically 8–14 weeks here.
At $2,250–$3,650 per month in rent, a new ADU in Irvine can pay for itself in roughly 8.6 years.
Irvine ADU FAQs
How much does it cost to build an ADU in Irvine?
Most Irvine ADUs we build land between $186k and $421k, depending on size, site work and finishes. Garage conversions sit at the low end; custom two-story units at the high end.
How long does ADU permitting take in Irvine?
State law requires cities to act on complete ADU applications within 60 days. In practice, Irvine permits typically take 8–14 weeks when plans are submitted complete — which is what our in-house drafting team focuses on.
What can I rent an ADU for in Irvine?
Based on Orange County rental trends, a new 1-bedroom ADU in Irvine commonly rents for $2,250–$3,650 per month, putting typical payback around 8.6 years.
What are the biggest challenges for ADUs in Irvine?
In Irvine and the wider Orange County, the issues we plan around most are HOA covenants, coastal commission review and tract-home utility layouts. We review these during a free feasibility check before you commit.
Is two-story ADUs over garages a good option in Irvine?
Yes — two-story ADUs over garages are among the most popular projects we build in Irvine. Newer subdivisions in Irvine often have tighter side yards, so we frequently recommend attached ADUs or converting an existing garage to keep costs down.
ADU builders near Irvine
Get a free ADU feasibility check in Irvine
Tell us about your lot. We'll review zoning, setbacks and utilities and send a ballpark budget — no obligation.