Accessory Dwelling Units (ADUs) have been known by many names: granny flats, in-law units, backyard cottages, secondary units and more. No matter what you call them, ADUs are an innovative, affordable, and effective option for adding much-needed housing in California. HCD is the state’s leader on local ADU ordinances, which — while optional — have grown exponentially in number as more cities, counties, and homeowners become interested in ADUs as one solution to increasing the supply of affordable housing.


Take a wander through our two bedroom model

ADU Floor Plans

ADU Variation Floor Plans (coming soon)


Let's be in touch

We look forward to hearing from you

    —A detached ADU—A garage conversion ADU—An addition to the main house ADU

    Homeowners who want to participate in Napa County's ADU loan program can email ADULoans@Countyofnapa.org 
    or call 707-259-8150. Napa County will add them to the interest list, and then get back in touch when the program goes live with application instructions.

    Links to local regulatory guidelines for ADUs

    City of Santa Rosa Sonoma CountyHealdsburgSebastopol | Napa