HAA Housing Accountability Act The CA Housing Accountability Act (HAA), Government Code section 65589.5, establishes limitations to a local government’s ability to deny or reduce density. By Nils Admin Nehrenheim|2026-02-26T02:07:42-08:00February 26, 2026|Glossary, Housing & Development Acronyms & Terms|Comments Off on HAA Share your Voice, Share Our Voice! FacebookX About the Author: Nils Admin Nehrenheim