ADUAllowed

San Mateo, CA

San Mateo ADUAllowed.

San Mateo, CA ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.

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ADU eligibility screen

San Mateo, CA ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.

San Mateo official ADU/building path High confidence
ADU eligibility screen

San Mateo ADU/source path

San Mateo, CA ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.

Primary sourceOfficial planning/building path
VerifyADU/accessory-use rules, zoning district, lot standards, permit path
Confidence: HighOfficial source pathReviewed June 2026
San Mateo official ADU/building pathOfficial sourceSan Mateo official planning/zoning pathOfficial sourceSan Mateo official siteOfficial source
aduaccessory dwellingplanning

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Common questions

What source does ADUAllowed use for San Mateo, CA?

San Mateo official ADU/building path, San Mateo official planning/zoning path, San Mateo official site. Official agency pages remain final.

Can I act on this ADUAllowed result without checking the agency?

No. ADU eligibility depends on city code, zoning, parcel constraints, utilities, and building safety review. Use the official source link before making a legal, safety, construction, property, or financial decision.

Cite this page

Use this page as a public web reference, not an official agency record. The linked official source remains the final authority.

ADUAllowed. "San Mateo, CA ADUAllowed | Official Address Check". https://www.aduallowed.com/cities/san-mateo-ca/. Reviewed Jun 2026. Source and citation notes