Learn more about specific ADU regulations in each San Mateo County city.
Note: New laws were recently passed 01/2020, and updates will be coming soon.
The Atherton Municipal Code is current through Ordinance 644, passed May 20, 2020.
City Website: http://www.ci.atherton.ca.us/
City Telephone: (650) 752-0529
Contact: Planner on Duty – 650.595.7478
2020 latest ADU ordiance: http://www.belmont.gov/home/showdocument?id=15642
Contact: Community Development Department – 415.508.2120, planning@ci.brisbane.ca.us
2020 latest ADU ordiance:https://library.municode.com/ca/brisbane/codes/code_of_ordinances?nodeId=TIT17ZO_CH17.43ACDWUN
Contact: Erika Lewit, Senior Planner – elewit@burlingame.org, 650.558.7250
2020 latest ADU ordinance: http://qcode.us/codes/burlingame/?view=desktop&topic=25-25_60-25_60_010
Address: 501 Primrose Rd, Burlingame, CA 94010
Contact: Colma Planning Department – 650.757.8888
Email: planning@colma.ca.gov
Contact: Michael VanLonkhuysen – 650.991.8158
https://library.municode.com/ca/daly_city/codes/code_of_ordinances?nodeId=TIT17ZO
Contact: Guido Persicone, Planning and Housing Manager – gpersicone@cityofepa.org – 650.853.3195
2022 latest ADU ordinance: https://www.cityofpaloalto.org/civicax/filebank/documents/57945
Contact: Timothy Maier, Associate Planner – 650.286.3237 tmaier@fostercity.org
2022 latest ADU ordinance: https://www.codepublishing.com/CA/FosterCity/?FosterCity17/FosterCity1778.html&?f
PLANNING PHONE HOURS:
8:00 am - 5:00 pm, Monday - Friday, Closed from 12:00 pm - 1:00 pm
Address: 610 Foster City Blvd, Foster City, CA 94404
Contact: Community Development Department – 650.726.8270
2022 latest ADU ordinance: https://www.codepublishing.com/CA/HalfMoonBay/#!/halfmoonbay18/HalfMoonBay1833.html#18.33
Contact: Planning Division – 650.375.7422
2022 latest ADU ordinance: https://www.hillsborough.net/DocumentCenter/View/2639/Ordinance-743?bidId=
Contact: Planning Department – 650.330.6702 – planning@menlopark.org
2022 latest ADU ordinance: https://www.codepublishing.com/CA/MenloPark/html/MenloPark16/MenloPark1679.html
Contact: Planning Division – 650.259.2341
Millbrae does not have an ordinance governing ADUs, so state law applies.
2022 latest ADU ordiance: https://www.hcd.ca.gov/policy-research/AccessoryDwellingUnits.shtml
Monday - Friday; 7:30 a.m. to 7:00 p.m. Saturday; 8:00 a.m. to 6:00 p.m.
Contact: Christian Murdock, Senior Planner – 650. 738.7341, murdockc@ci.pacifica.ca.us
2022 latest ADU ordinance: https://library.municode.com/ca/pacifica/codes/%20code_of_ordinances?nodeId=TIT9PLZO_CH4ZO_ART4.5SEREUN
Contact: Dylan Parker, Assistant Planner - 650-851-1700 x 230, dparker@portolavalley.net
2022 latest ADU ordiance: https://www.portolavalley.net/home/showdocument?id=12831
Contact: You may contact any planner at the City to discuss ADU regulation – planning@redwoodcity.org, 650.780.7236
2022 latest ADU ordinance: https://www.redwoodcity.org/Home/ShowDocument?id=10780
Contact: Matt Jones, Assistant Planner – 650.616.7089
2022 latest ADU ordiance: https://www.sanbruno.ca.gov/gov/city_departments/commdev/housing/accessory_dwelling_units.htm
Contact: Brittany Whitehill, Planning Technician – 650.802.4208, bwhitehill@cityofsancarlos.org
2022 latest ADU ordiance: https://www.cityofsancarlos.org/government/departments/community-development/planning/accessory-dwelling-units-adu
Contact: William Gibson – 650.363.1816
650.522.7212 – planning@cityofsanmateo.org
Julia Klein, Principal Planner, 650.522.7216 – jklein@cityofsanmateo.org, planning@cityofsanmateo.org
2022 latest ADU ordiance: https://www.cityofsanmateo.org/482/Accessory-Buildings
Phone: (650) 877-8535 Email: SSFplanning@ssf.net
315 Maple Avenue
South San Francisco, CA 94080
Department Hours:
Mon. - Fri. : 8am-5pm
2022 latest ADU ordiance: https://www.ssf.net/home/showdocument?id=18770
2022 latest ADU ordiance: https://www.woodsidetown.org/sites/default/files/fileattachments/town_council/meeting/28841/item_a_report_-_zoam2020-0001.pdf
2955 Woodside Road
Woodside, CA 94062
(650) 851‑6790