Accessory Dwelling Units

ADUs, commonly called Guest Houses, are defined in the San Juan County Code as: 
  
Accessory dwelling unit (ADU)" means a living area that is accessory to the principal residence, located on the same lot, and that    provides for sleeping quarters, kitchen, and sanitation facilities. An ADU may be internal, attached or detached. 
 
Within land use districts located inside of the boundaries of activity centers and urban growth areas, there is no restriction on the number of permits for detached accessory dwelling units. Outside of the boundaries of activity centers and urban growth areas, there are five (5) permits for the construction of new ADUs and one (1) permits for the conversion of existing accessory structures (legally in existence for five years) available for 2021.

San Juan County Department of Community Development (DCD) is accepting applications for detached ADU permits proposed outside of urban growth areas and activity centers until 4:30 pm February 8, 2021.

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APPLY ONLINE! You can now apply for your ADU eligibility online through the online permit center - click the button on the right to start the application process. 
OnlinePermitCenter

Documents

  1. ADU FAQs
  2. Detached ADU Eligibility Application
  3. Detached ADU Permit Procedures (PDF)
  4. 2021 ADU Eligibility Application Deadline

ADU Lottery Results

  1. ADU Building Permit Application Checklist

Regulations


for Accessory Dwelling Units

SJCC 18.40.270, "Vacation rental of residences or ADUs"  says:
"Detached accessory dwelling units established under SJCC 18.40.240 cannot be separately leased or rented for less than 30 days."  Detached ADUs established after 6/29/2007 cannot be used for vacation rental.  (Ord. 7-2006 amended by Ord. 12-2007)