Accessory and Attached Dwelling Unit Incentives

Encourage more accessory dwelling units (ADUs) to increase housing density and affordability by gradually adding new housing in existing residential zones, reducing displacement, and providing housing for a wider range of ages.


Simplify the ADU approval process by providing pre-approved construction plans, expedited (e.g., 30-day) permit approval, and significantly reduced fees.

  • Reference local jurisdictional successes in loan programs, permitting, and other procedures to create a successful ADU program.
  • Support legislation that expands access to ADU funding and streamlining, such as SB 9 and other related legislation. 

Design Guidelines
Policy & Implementation
The Role of Local Government & Transit First Policies
Guiding Principles of Land Use
Flexible Zoning Strategies
Street Design Implementation
Revising Transportation Analysis Practices
Transportation Demand Management
Rethinking Vehicle Parking Requirements
Parking Management
Best Practices to Attract Successful Developers
Clarifying Design Expectations
Integrating Retail into Transit Oriented Development
Community Planning for Rail Transit
Additional Resources

A photo of an modern ADU.
Accessory Dwelling Unit (Source: Flickr - Sightline Institute)