N.E.O. Builders

Complete guide to JADUs in California. Learn requirements, costs, and 2026 law updates (AB 1154), plus when a JADU vs ADU makes sense.

It’s a new year, which means a new round of ADU laws hitting California. By now, this pattern should feel familiar. Since 2017, California has passed new ADU legislation nearly every year to make it easier, faster, and more affordable for homeowners to build. And there’s a reason for that: ADUs work. After designing and building over 100 ADUs, I’ve seen firsthand how life‑changi...