Choose the property’s City
San Bernardino County contains 24 incorporated cities. Each City page is separate because local application steps, fees, departments and special-area reviews can differ.
AdelantoCity ADU starting pageApple ValleyCity ADU starting pageBarstowCity ADU starting pageBig Bear LakeCity ADU starting pageChinoCity ADU starting pageChino HillsCity ADU starting pageColtonCity ADU starting pageFontanaCity ADU starting pageGrand TerraceCity ADU starting pageHesperiaCity ADU starting pageHighlandCity ADU starting pageLoma LindaCity ADU starting pageMontclairCity ADU starting pageNeedlesCity ADU starting pageOntarioCity ADU starting pageRancho CucamongaCity ADU starting pageRedlandsCity ADU starting pageRialtoCity ADU starting pageSan BernardinoCity ADU starting pageTwentynine PalmsCity ADU starting pageUplandCity ADU starting pageVictorvilleCity ADU starting pageYucaipaCity ADU starting pageYucca ValleyCity ADU starting page
Is the property outside a City?
If the parcel is in an unincorporated area, the County is the local starting point. Confirm the parcel jurisdiction before using County instructions; a postal address can still name a nearby City.
What to ask in the first conversation
Can I build it?Confirm jurisdiction, property constraints and a workable ADU type.
What could it cost?Request an early total-budget range, including design, permits, utilities and construction.
How long could it take?Separate design and review time from construction time.
Sources and review status
The City list was checked on . Each City guide includes contacts, permit information and official resources.