What are the setbacks requirements for an ADU?

Detached ADUs must have a minimum four foot side and rear yard setback.  If the ADU is created through the conversion of space in an existing detached structure, i.e. garage, the existing setback may be maintained provided it is sufficient for fire safety.

Attached ADUs shall maintain a five foot side yard setback and a 20 foot rear yard setback.  In some cases, the rear yard setback for attached units may be reduced to 10 ft.  If your project requires a reduced rear yard setback, contact the Planning Division at (916) 727-4740 to see if your property qualifies.

There may be other factors such as easements that will increase the required setback.  Additionally, it is not recommended to build right up to the setback line.  Many times during construction if the structure appears too close to the setback, the property owner may be required to have the property surveyed during the inspection process.  To find out if your property has easements that need to be considered, please refer to your property’s title report. 

Show All Answers

1. What is an ADU?
2. Is an ADU allowed on my property?
3. What size of an ADU is allowed?
4. What is the difference between an attached ADU and a detached ADU?
5. What are the setbacks requirements for an ADU?
6. How many bedrooms are allowed in an ADU?
7. How is the floorspace of the ADU calculated?
8. What is the height limit of an ADU?
9. What are other factors when considering an ADU?
10. Can I rent the ADU or does it have to be occupied by family?
11. Can a manufactured home be used as an ADU?
12. Can a “Tiny Home” be used as an ADU?
13. Is additional parking required for an ADU?
14. Can an existing garage be converted into an ADU?
15. How many ADUs are allowed?
16. What is a Junior ADU?
17. Does an ADU require separate utilities?
18. Is solar energy required for ADUs?
19. Are fire sprinklers required in an ADU?
20. Do I need a permit to create the ADU?
21. How much is a building permit for an ADU?
22. Will my property taxes increase?