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San Mateo
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OtherApproved500 E. 3rd Avenue / 300-320 S. Delaware Street / 511-525 E. 4th Avenue / 307-373 S. Claremont Street, San Mateo, CA

Block 21 Mixed-Use Project

San Mateo

Description

A second two-year extension of the approved six-story mixed-use project (111 apartments plus about 180,000 square feet of office), moving the expiration date to June 2028. No design changes.

Impact summary

Keeps an approved downtown project alive for two more years; the developer says financing is improving and construction should start within this window.

Applicant

Name
Michael Field, Windy Hill Property Ventures
Address
500 E. 3rd Avenue / 300-320 S. Delaware Street / 511-525 E. 4th Avenue / 307-373 S. Claremont Street, San Mateo, CA

At a glance

Hearings
1
Public comments
0
Total mentions
1

Last vote · Planning Commission

Approved5–0, unanimous

Last discussed May 12, 2026.

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