San Jose regulates lot coverage (the percentage of a lot covered by structures) through SJMC Title 20. In R-1-8 single-family residential zones, the maximum lot coverage is typically 40% of the lot area. Lot coverage includes the footprint of all buildings, covered patios, and accessory structures. Uncovered decks, swimming pools, and pervious surfaces are generally excluded from lot coverage calculations. ADUs and JADUs have specific lot coverage exceptions under state law.
Lot coverage calculations include the primary dwelling, garage, covered patios, and accessory structures measured at the drip line. Projects exceeding the maximum lot coverage may seek a Residential Exception if the proposed coverage is consistent with the block pattern. California AB 68 and AB 881 exempt ADUs up to 800 sq ft from lot coverage requirements on single-family lots. The City also considers Floor Area Ratio (FAR) for multi-family and commercial development.
Building permits for projects exceeding lot coverage limits will not be issued without an approved exception. Unpermitted structures contributing to excess lot coverage may be subject to removal orders.
San Jose, CA
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San Jose, CA
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San Jose, CA
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San Jose, CA
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San Jose, CA
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San Jose, CA
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Side-by-side rule comparisons with other cities in Santa Clara County.
See how other cities in Santa Clara County handle lot coverage limits.
See how San Jose's lot coverage limits rules stack up against other locations.
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