O
San Mateo
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Site PlanApproved220 W. 20th Avenue, San Mateo, CA

New Multi-Family Residential Development (PA-2025-063)

San Mateo

Description

A seven-story, 232-unit rental building with 31 below-market-rate units, 277 parking spaces, and a voluntary crosswalk at Elkhorn Court and W. 20th. The council approved it 5-0 despite fierce opposition over Elkhorn Court traffic and safety.

Impact summary

Adds roughly 995 daily vehicle trips to a constrained cul-de-sac serving a childcare center and adult day program; the developer offered loading zones, crosswalks, red curbs, noise barriers, and reserved Shriners parking as mitigation.

Applicant

Name
SummerHill Apartment Communities (SHAC)
Address
220 W. 20th Avenue, San Mateo, CASee this on the map

At a glance

Hearings
1
Public comments
0
Total mentions
1

Last vote · City Council

Approved5–0, unanimous

Last discussed Jun 15, 2026.

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