Los Angeles County Department of Regional Planning

Affordable Housing Preservation Ordinance


Affordable housing preservation seeks to maintain the supply of lower-cost housing to avoid displacement of tenants or the loss of affordable units due to new development. The Board of Supervisors initiated an ordinance to preserve existing affordable housing that considers a variety of strategies, such as the regulation of condominium conversions and mobile home park closures, and one-for-one replacement or “no net loss” policies.

Preliminary Policy Outline

In September 2019, staff developed a Preliminary Affordable Housing Preservation Ordinance Policy Outline, which introduces proposed policies related to the following:

  • No net loss: requires one-to-one replacement of rental units occupied by lower or very low income households within the previous 5 years that are demolished, converted to condominiums or substantially rehabilitated. The replacement units must be deed-restricted to ensure affordability to lower or very low income residents. Alternatives include on-site or off-site replacement, or payment of a replacement fee.

  • Right to purchase: Existing tenants, County and nonprofits receive first right to purchase, and match a market-rate offer for, rental units that are being converted to condominiums.

  • Mobilehome park preservation: Preserve mobilehome parks as a viable lower-cost housing option by removing land use and zoning barriers such as density requirements that limit the expansion of existing mobilehome parks or the establishment of new mobilehome parks. The policy will not include mobilehome parks in Fire Hazard Severity Zones or other high-hazard areas.

Staff will continue to conduct further stakeholder engagement in preparation of the Affordable Housing Preservation Ordinance. Please check back here for updates.


The Affordable Housing Preservation Ordinance will be further developed with studies in the fall of 2019. The studies will include a nexus study and feasibility analysis for an affordable housing off-site replacement fee, as well as a land use policy study for mobilehome parks.

Additional Resources

Below is a link to an informational presentation by staff to the Regional Planning Commission to introduce policy concepts for the Affordable Housing Preservation Ordinance, as well as links to concurrent County efforts to preserve housing affordability.

For more information, please contact Ayala Scott at ascott@planning.lacounty.gov.

DRP en Español

Department Spotlight

Housing Element Update Woolsey Fire Recovery Oil Well Tree Pest Disease FFCP Homeless Buying Property SEATAC Historic Preservation DRP Video Library

Follow Us

Twitter Facebook Instagram YouTube

©2009 Los Angeles County Department of Regional Planning.

All Rights Reserved. Terms under which this service is provided to you. Privacy Statement.

Please send website questions and comments to webadmin@planning.lacounty.gov

Many of our documents are in PDF format. You can download Adobe Reader by clicking this link.

Department of Regional Planning
320 West Temple Street
Los Angeles, CA 90012
T: (213) 974-6411 . F: (213) 626-0434
TDD: (213) 617-2292
Twitter Facebook Instagram YouTube