ADUAllowed

San Jose, CA

San Jose ADU Permit Check.

San Jose requires an ADU building permit before constructing a new unit or converting existing space into an ADU.

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ADU eligibility screen

San Jose requires an ADU building permit before constructing a new unit or converting existing space into an ADU.

San Jose accessory dwelling units High confidence
ADU eligibility screen

San Jose requires an ADU building permit before constructing a new unit or converting existing space into an ADU.

This answers the permit requirement, not parcel or design approval. Property type, fire access, utilities, easements, historic status, objective standards, and building code remain.

What this tells youComputed rule answer
How precise this isComputed rule answer
Official data checkedSan Jose accessory dwelling units
Next stepCheck parcel rules and project scope before design, purchase, or contractor conversations.
ADU permitBuilding permit required before construction or conversion
City processSubmit through San Jose's ADU permit pathway
Still verifyProperty type, objective standards, fire access, utilities, easements, historic status, and code
Confidence: HighComputed rule answerReviewed jurisdiction ruleReviewed July 2026
San Jose accessory dwelling unitsOfficial source
adu permitexact answerofficial rulereviewed threshold

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Common questions

What source does ADUAllowed use for San Jose, CA?

San Jose accessory dwelling units. Official agency pages remain final.

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

No. This answers the permit requirement, not parcel or design approval. Property type, fire access, utilities, easements, historic status, objective standards, and building code remain. Use the official source link before making a legal, safety, construction, property, or financial decision.