Finding an ADU floor plan online is easy. Finding an ADU floor plan that is actually accepted in your city is harder. Many homeowners begin by searching for backyard cottage designs, prefab ADUs, tiny homes, garage conversion layouts, or one-bedroom ADU plans. Those searches can produce attractive images, but they do not always answer the most important question: can this plan be used where I live? ADU rules are local. Even when state law creates a general framework, cities and counties may have their own plan programs, accepted plan lists, permit requirements, and fee notes. That is why a city-based research process is more useful than a general image search. A good starting point is ADU Plan Finder , a public ADU plan directory that helps homeowners search official city and county ADU plan programs, compare accepted floor plan details, and verify provider, permit, and source links before relying on a plan.…