Every active association in San Mateo County that has filed its statement with the Secretary of State, what kind it
is and how large. Half of them govern 27 homes or fewer; the largest governs 990.
Register as of 2026-10-03Source Secretary of State, CPRA responseFiled underCiv. Code § 5405
By kind
Kind
Associations
Share
Homes
Condominium
491
70%
28,374
Planned development
205
29%
14,063
Community apartment project
4
1%
27
Stock cooperative
1
0%
104
By size
Separate interests
Associations
1–10
166
11–50
305
51–150
160
151–500
64
501 and more
6
How good the register is
The statement is the only official list of associations, and it is only as current as the last filing.
80 of 701 last filed it more than two years before the register was copied. They are counted here but have no page of their own.
The county is free text. Associations wrote “San Mateo” 13 different ways; each one is read back to the county.
382 of 701 have had their corporate powers suspended at some point, and 17 corporations here are suspended today. A suspension is the corporation’s, not the community’s — § 5405(d).