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Bayside-Joinville Park Dog Park

Q: Are dogs allowed at Bayside-Joinville Park Dog Park?

Yes. This is an off-leash dog park. Verified 2026-10-29 from City of San Mateo.

Park · San Mateo · San Mateo County · California

Are dogs allowed at Bayside-Joinville Park Dog Park?

Yes. This is an off-leash dog park.

Verified October 29, 2026 from City of San Mateo.

Leash: Off leash allowed under voice control

414.7 On US-101 at mile 414.7, 0.7 mi off the freeway. See every dog stop on US-101.

Rules

Dog rules with source and verified date
Rule	Value	Source	Verified
Dogs allowed	YesNear the wastewater treatment plant off Detroit Drive. Open 6 a.m. to 10 p.m.	[1] City of San Mateo	October 29, 2026
Leash	Off leash allowed under voice controlagency-wide rule	[3] City of San Mateo	October 29, 2026
Dog park on site	YesFenced.	[1] City of San Mateo	October 29, 2026

Rules in every San Mateo dog park and off-leash area

Dogs must be leashed everywhere except a designated off-leash area during its hours (San Mateo Municipal Code 8.02.070). Leashed dogs are welcome in the city's other parks.
No more than three dogs per handler.
Keep your dog under voice command and watch it at all times; leave aggressive dogs at home.
Pick up after your dog; bags and trash cans are provided.
No food or treats.
Dogs must be licensed and vaccinated. Female dogs in heat are not allowed.
Closely supervise children under 14, and ask before they approach a dog.
Off-leash fields close in wet weather.

Source: [3] City of San Mateo, checked October 29, 2026

Location

Detroit Drive, San Mateo · San Mateo County · California · Map (OpenStreetMap)

Managed by City of San Mateo. Official page

Sources

Dog Parks & Off-Leash Areas (cityofsanmateo.org), City of San Mateo. Government agency, checked October 29, 2026.
Bayside-Joinville Park The site is a fenced area near the Waste Water Treatment Plant off Detroit Drive. | Daily | 6 a.m. | 10 p.m.
Location: TIGER/Line 2025 area landmark "Joinville Park", internal point (census.gov), U.S. Census Bureau. Government agency, checked October 29, 2026.
Dog Parks & Off-Leash Areas (cityofsanmateo.org), City of San Mateo. Government agency, checked October 29, 2026.
*Dogs must be kept on a leash at all times except when in the designated DOLA during permitted times. (SMMC 8.02.070) ... Dogs are allowed in our other parks, but must be kept on a leash. ... we enforce a “no more than 3 dogs per handler” rule. ... You should be in voice command of your dog at all times

First verified October 29, 2026; re-check due November 28, 2026. Freshness: fresh. How we verify.

See something out of date? Rules change. If what you saw on site differs from this page, suggest a correction for Bayside-Joinville Park Dog Park or email corrections@dogpolicies.com. We re-verify against the official source, usually within a week, and log the result on the accuracy page.

Cite this record

Bayside-Joinville Park Dog Park (San Mateo, CA): Yes. This is an off-leash dog park. Source: City of San Mateo, checked 2026-10-29. DogPolicies record: https://dogpolicies.com/places/bayside-joinville-park-dog-park/ (CC BY 4.0; cite with link).

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Bayside-Joinville Park Dog Park

Rules

Rules in every San Mateo dog park and off-leash area

Location

Sources

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