ADU articles and field notes
Current guidance from an Orange County design-build team on ADU costs, permits, layouts, timelines, and construction decisions.
Project Walkthrough: A 700 Sq Ft ADU with High Ceilings in Pasadena, CA
The short version This is a finished 700 sq ft ADU in Pasadena, CA that we designed and built — […]
Read article →Project Walkthrough: A 1,188 Sq Ft Two-Story ADU in Rosemead, CA
The short version This is a finished 1,188 sq ft detached two-story ADU in Rosemead, CA — 3 bedrooms, 2 […]
Read article →ADU Rules by City: The Orange County & LA Quick-Reference Table
The short version California sets the floor everywhere — ministerial approval, 4-ft side and rear setbacks, and since 2026 a […]
Read article →How We Build an ADU Foundation: Step by Step, From a Real Orange County Backyard
The short version An ADU foundation is built in layers, and every layer has a job: compacted ground, a gravel […]
Read article →SB 9 vs an ADU: California Lot Splits, Explained for Homeowners
Last reviewed: August 11, 2026. Planning ranges are based on contractor experience and are not city service guarantees. Rules and […]
Read article →Above-Garage ADU: The Apartment Over the Garage, Done Right
Last reviewed: August 11, 2026. Planning ranges are based on contractor experience and are not city service guarantees. Rules and […]
Read article →Prefab ADU vs Custom-Built: The Honest California Comparison (2026)
The short version A prefab ADU is built in a factory and delivered to your lot; a custom (stick-built) ADU […]
Read article →What Is an ADU? Meaning, Types & Why California Loves Them
Last reviewed: August 11, 2026. Planning ranges are based on contractor experience and are not city service guarantees. Rules and […]
Read article →Do ADUs Increase Property Taxes in California? (2026)
The short version Yes — but far less than most homeowners fear. Adding an ADU in California does not trigger […]
Read article →How Long Does an ADU Take in Orange County? 2026 Planning Timelines by City
Last reviewed: August 11, 2026. Planning ranges are based on contractor experience and are not city service guarantees. Rules and […]
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