Using a proprietary methodology, the California Housing Partnership identified unsubsidized naturally-occurring affordable housing (NOAH) properties that due to their age, location and other market factors, offer rents affordable to low-income households. Notable findings in this 2025 report include:

• Rents charged for 189,000+ homes  concentrated in Southern California, the Bay Area, and Sacramento and Fresno counties are no longer affordable.
• 39,738 homes are at immediate risk of losing their affordable rents, while up to 333,819 are at risk of losing their affordable rents in the near future.
• 49% of lost unsubsidized affordable rental homes were located in resource-rich areas that are hardest to replace.