Will my property taxes increase with an ADU?

Property taxes are assessed by the County of San Mateo Assessor’s Office, not by the City of Menlo Park. For all development projects in the City, the County collects information from the City when building permits are issued to a property. Please contact the County Assessor’s Office for more information about how the information is used.

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1. Which properties qualify as a lot with a single-family residence?
2. Which properties qualify as a lot with an existing multi family building?
3. Do ADUs count toward floor area and building coverage limits?
4. Is an ADU an accessory building?
5. Can I convert an existing accesory building into an ADU?
6. Can I convert my attached garage/carport into an ADU?
7. Do I need to provide parking for my ADU?
8. Can I rent out my ADU?
9. Is there a daylight plane requirement for ADUs?
10. Will my property taxes increase with an ADU?
11. What fees are required for an ADU?