Author name: Brian Leung

Last reviewed: August 11, 2026. Planning ranges are based on contractor experience and are not city service guarantees. Rules and […]

Last reviewed: August 11, 2026. Planning ranges are based on contractor experience and are not city service guarantees. Rules and

The short version A prefab ADU is built in a factory and delivered to your lot; a custom (stick-built) ADU

Last reviewed: August 11, 2026. Planning ranges are based on contractor experience and are not city service guarantees. Rules and

The short version Yes — but far less than most homeowners fear. Adding an ADU in California does not trigger

Last reviewed: August 11, 2026. Planning ranges are based on contractor experience and are not city service guarantees. Rules and

The short version Yes, you can build a two-story ADU in Orange County — but the path decides how hard

The short version There is no special “ADU loan” product, and the famous CalHFA $40,000 grant has been closed since

The short version For 2026, California didn’t shrink what you can build — it tightened the clock on cities and

The short version In Southern California, a “casita” is usually the same thing as an ADU — but “casita” is