The City is in the process of updating its accessory dwelling unit (ADU) ordinance to align with the new state laws and is seeking your input on new rules that will regulate the development of ADUs in San Mateo.

The City of San Mateo is looking to update its local accessory dwelling unit (ADU) regulations and needs your input! An ADU is a secondary residential housing unit known by many different names, including "in-law unit," "casita," or "guesthouse." ADUs can be built as a detached structure, attached to a single-family home, or be a conversion of an existing space within a home or structure.

We are considering how to update local regulations to align with new state laws, as well as develop ADU standards that best address the needs and concerns of our residents. Please take this survey to learn about the statewide changes and share your feedback on issues such as maximum height and building size, parking requirements, and design standards. This survey, along with feedback gathered during two online workshops held in June, will be shared with both the Planning Commission and City Council as they consider the updated ADU Ordinance later this year.