California's efforts to address its housing shortage have led to significant streamlining of the ADU permitting process. According to the California Department of Housing and Community Development, these changes have reduced approval times by up to 50% while maintaining essential safety and quality standards.

The New 45-Day Timeline

Under the latest regulations from the California State Legislature, local agencies must now process complete ADU applications within 45 days. This represents a significant improvement from the previous 60-day requirement and marks a major victory for homeowners planning ADU projects.

Key improvements to the process include:

  • Mandatory online permit submissions
  • Digital application tracking systems
  • Concurrent review processes
  • Simplified checklist-based approvals

Pre-Approved Plans

The California Building Standards Commission now requires cities to maintain libraries of pre-approved ADU plans. These plans offer several advantages:

  • Guaranteed compliance with state building codes
  • Expedited review process
  • Reduced design costs
  • Predictable approval timeline

Reduced Fees and Requirements

The State Treasurer's Office has implemented several fee reductions:

  • Waived impact fees for units under 750 square feet
  • Proportional utility connection fees
  • Eliminated parking requirements near transit
  • Reduced plan check fees for pre-approved designs

Digital Submission Requirements

The Governor's Office of Housing now mandates digital submission options for all jurisdictions. Required components include:

  • Online application portals
  • Digital plan submission capabilities
  • Electronic payment systems
  • Automated status updates

Streamlined Review Process

Local building departments must now follow a simplified review process that includes:

  • Single point of contact for applicants
  • Checklist-based plan reviews
  • Consolidated correction lists
  • Virtual inspection options

Looking Ahead

These permitting improvements represent a significant step forward in California's efforts to encourage ADU development. For homeowners considering an ADU project, there has never been a better time to start the process.

For detailed information about permitting requirements in your area, visit the California ADU Resource Center.