Accessory Dwelling Unit (ADU)

This page houses memos, guidance and information on state laws pertaining to ADUs and Junior ADUs. ADU public information resources can be found on this webpage.

These resources can help jurisdictions complete the Accessory Dwelling Unit (ADU) affordability section of their Regional Housing Needs Allocation (RHNA) Annual Progress Reports (APRs).

Napa Sonoma ADU, a project of the Napa Valley Community Foundation and Community Foundation Sonoma County, collects resources that aid in the creation of accessory dwelling units (also known as second

To help document the affordability of new ADUs, the RHTA Program has launched an online survey to help jurisdictions meet ADU monitoring requirements made in their Housing Elements. The survey was

Widening the range of housing types can increase the housing supply and help more low-income Californians thrive. Two examples of housing types that can be integrated in existing neighborhoods are

The ADU Resource Center of San Mateo County collects resources that aid in the creation of accessory dwelling units (ADUs, also known as second units or granny flats). It offers a variety of resources

In Session 4 of the " Wildfires – How to Preserve and Protect Housing" work group, speakers discussed how density can be added to our communities while also adding protection to homes and

The Casita Coalition was formed to empower communities and help people solve their housing needs. It provides policy resources to support the development of small homes and ADUs (Accessory Dwelling

The California Department of Housing and Community Development (HCD) Housing Production Hub website features a suite of online tools and information resources to support local jurisdictions in

This January 2020 memorandum from the Deputy Director for the Division of Housing Policy Development at the Department of Housing and Community Development (HCD) provides direction to planners and