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- Applicable land use controls and site improvement requirements

Housing Element Sites Inventory Guidebook (AB 1397) · 2026 edition · updated 2026-09-22 · California

The analysis must consider the imposition of any development standards that impact the residential development capacity of the sites identified in the inventory. When establishing realistic unit capacity calculations, the jurisdiction must consider the cumulative impact of standards such as maximum lot coverage, height, open space, parking, on-site improvements such as sidewalks or easements, and floor area ratios. The analysis should consider any development standards or the cumulative effect of development standards that would limit the achievable density on a site. For example, if a mixed-use zone requires commercial on the ground floor and has a height limit of three stories along with lot coverage and other development standards, the density that can actually be achieved on that site might be less than the maximum allowable density.

The capacity of a site should also be adjusted for areas that cannot be developed due to environmental factors such as hazards, wetlands, or topography that cannot be mitigated. The capacity of sites subject to specific plans, overlays or other modifications of the base zoning should be adjusted to reflect those factors. For purposes of this analysis, it is recommended that the jurisdiction start with the gross acreage and adjust the buildable acreage accordingly to reach net buildable acreage.

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▸Contents — Housing Element Sites Inventory Guidebook (AB 1397)

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