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No Net Loss Law

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

In estimating realistic capacity on sites in the sites inventory, jurisdictions may want to consider No Net Loss Law. This law was amended by Chapter 367, Statutes of 2017 (Senate Bill 166), which requires sufficient adequate sites to be available at all times throughout the RHNA planning period to meet a jurisdiction’s remaining unmet housing needs for each income category. To comply with the No Net Loss Law, as jurisdictions make decisions regarding zoning and land use, or development occurs, jurisdictions must assess their ability to accommodate new housing in each income category on the remaining sites in their housing element site inventories. A jurisdiction must add additional sites to its inventory if land use decisions or development results in a shortfall of sufficient sites to accommodate its remaining housing need for each income category. In particular, a jurisdiction may be required to identify additional sites according to the No Net Loss Law if a jurisdiction rezones a site or if the jurisdiction approves a project at a different income level than shown in the sites inventory. Lower density means fewer units than the capacity assumed in the site inventory.

To ensure that sufficient capacity exists in the housing element to accommodate the RHNA throughout the planning period, it is recommended the jurisdiction create a buffer in the housing element inventory of at least 15 to 30 percent more capacity than required, especially for capacity to accommodate the lower income RHNA. Jurisdictions can also create a buffer by projecting site capacity at less than the maximum density to allow for some reductions in density at a project level. End no net loss law explanation.

Site Inventory Guidebook

Page 22

May 2020

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