California homeowners often hear that ADU rules have become easier. That is partly true. State-level ADU laws have helped open the door for more accessory dwelling units, and many cities now have clearer processes than they did several years ago. But when it comes to pre-approved ADU plans, there is one detail homeowners should understand early: California does not work like one single statewide plan catalog for every property. Pre-approved ADU plans are usually organized through local city or county programs. That means a plan accepted in one city may not automatically be accepted in another. Even when a plan is listed in a nearby jurisdiction, you still need to verify whether it can be used for your parcel. This is why ADU Plan Finder’s California directory is useful. It is designed around local city and county plan pages so homeowners can browse source-backed ADU plan listings in the correct jurisdictional context.…