PA-2021-004 / Zoning Text Amendments SMMC 27.19 & 27.04.165 (c) -  ADU/JADU Ordinance Update 

Project Description

Project Update

  • The City will be holding virtual Community Workshops on the ADU and JADU Ordinance Update. Staff will be discussing the recent changes to state ADU/JADU legislation and how it impacts property owners and residents of San Mateo. There will be opportunities for attendees to ask questions and provide comments on how ADU/JADU development should look like in San Mateo. 
  • On April 5, 2021, the City Council pulled the draft Ordinance from the consent calendar and voted 4-0, disapproving the Ordinance as proposed, and instructed staff to perform community engagement and return with a revised ordinance reflective of input provided by the public. The meeting materials are available on the Public Meeting Portal.
  • The proposed draft ordinance was introduced to the City Council on March 15, 2021. The City Council voted 4-1 to introduce an Ordinance to amend San Mateo Municipal Code Chapter 27.19 – “Accessory Dwelling Unit and Junior Accessory Dwelling Unit – Residential Zones” in accordance with changes to State law and “Junior Accessory Dwelling Unit” definition, as amended to allow detached accessory dwelling units to be built up to a maximum of 16 feet to top-of-plate and up to 24 feet overall to the top ridgeline, as measured from existing grade.  The meeting materials available on the Public Meeting Portal.
  • On February 9, 2021, the Planning Commission voted 4-1 to recommend the proposed draft ordinance to amend San Mateo Municipal Code (SMMC) Chapter 27.19 – “Accessory Dwelling Unit and Junior Accessory Dwelling Unit – Residential Zones” in accordance with recent changes to state ADU and JADU legislation that went into effect January 1, 2020, and to modify SMMC Ch. 27.04.165 (c) “Junior accessory dwelling unit” definition. 
  • On March 2, 2020, Staff updated City Council regarding changes to State Law associated with ADU/JADU development, as well as to discuss the limited areas of regulation which remain under the City’s discretion. The Council provided Staff general direction to study a number of technical areas including a tiered minimum or “by-right” ADU size based on lot size; developing a maximum building height for ADUs and exemptions to address additional parking associated with ADU/JADUs; and exploring ways to expedite and streamline the permitting process. The Council agreed to continue banning short-term rentals on all ADUs, and to allow existing non-code compliant ADUs to remain provided they meet health and safety considerations. The Council was unanimous agreement that additional community outreach should be conducted by the City to ensure the community is informed on the recent changes to State Law.  

Upcoming Meetings

Community Workshop: Accessory Dwelling Unit & Junior Accessory Dwelling Unit Ordinance Update Discussion
Date: June 24, 2021
Time: 6:00 p.m. to 7:30 p.m.
https://us02web.zoom.us/webinar/register/WN_sSXJsJEPQZm0s22ciBuAhQ

Community Workshop: Accessory Dwelling Unit & Junior Accessory Dwelling Unit Ordinance Update Discussion
Date: June 26, 2021
Time: 10:00 a.m. to 11:30 a.m.
https://us02web.zoom.us/webinar/register/WN_F4leLqoaTASihPqt4dYoJg

Past Meetings

City Council Public Hearing (consent calendar item)
Date: April 5, 2021
Time: 7:00 p.m.
Location: Remote*
*Please see the Public Meeting Portal for instructions on how to watch the meeting remotely and provide public comment.

City Council Public Hearing
Date: March 15, 2021
Meeting Materials and Video

Planning Commission Public Hearing
Date: February 9, 2021
Meeting Materials and Video

City Council Study Session
Date: March 2, 2020
Meeting Materials and Video


City Contact Information

Phillip Brennan, AICP
Associate Planner
(650) 522-7218
pbrennan@cityofsanmateo.org