This data supplements the Housing Inventory report - an annual report describing San Francisco’s housing supply. Housing Inventory data accounts for new housing construction, demolitions, and alterations in a consistent format for analysis of housing production trends. Net housing unit gains are reported citywide, by zoning classification, and by planning district. Other areas covered in the report include affordable housing production, condominium conversions, and changes to the residential hotel stock. Reports are available for the public at the Planning Department and on the website.