The City of Scotts Valley permits ADUs across most residential zones. Scotts Valley follows both state and local ADU laws, allowing most single-family homes to build one detached ADU and one Junior ADU (JADU) per lot. Multi-family properties may be eligible for multiple ADUs, depending on site conditions.

Scotts Valley aligns with California’s broader ADU legislation but has its own requirements for height, setbacks, and design review.

• Detached ADU: The unit is separated from the primary structure
• Attached ADU: The unit is attached to the primary structure
• Conversion ADU: Space on the lot of the primary residence that is converted into an independent living unit
• Junior ADU (JADU): A specific type of conversion of existing space that is located entirely within an existing or proposed single-family residence

• Maximum Size:
  
  • Detached: Up to 1,200 sq. ft.
  • Attached: Up to 1,200 sq. ft. or 50% of the primary dwelling’s floor area, whichever is less
• Setbacks:
  
  • Minimum 4 feet from side and rear property lines
• Height Limits:
  
  • Detached ADU: Up to 16 feet, or up to 25 feet if located above a garage feet if constructed above a garage
  • Attached ADUs: may reach a maximum height of 25 feet
• Parking Requirements:
  
  • Additional parking is not required if the ADU is:
    
    • Within ½ mile walking distance of a public transit stop
    • Within a designated historic district
    • Within one block of a designated car share vehicle

To build an ADU in Scotts Valley, applicants must complete:

• Zoning compliance review: Confirms the ADU meets Scotts Valley zoning standards for lot eligibility, size (up to 1,200 sq ft), height, and 4-ft side and rear setbacks
• Site plan and elevations: Must show lot boundaries, existing/proposed structures, ADU location, access, parking, grading (if any), and height details
• Architectural drawings: Provide detailed floor plans, roof plans, cross-sections, and exterior elevations demonstrating compliance with local design, fire, and building codes
• Structural calculations and engineering: Required for all new ADUs to ensure compliance with building, fire, slope, and seismic safety standards
  

Homeowners should also review Scotts Valley’s current fee schedule, utility connection requirements, and fire code compliance.

Scotts Valley has no fixed ADU review timeline, but state law requires a decision within 60 days of a complete application. Review times vary by project complexity, site conditions, and required reviews. Incomplete or inaccurate plans can delay approval, so early consultation and complete, code-compliant submittals are recommended.

ADUs are allowed on lots with an existing or proposed primary dwelling in any residential zoning district within Scotts Valley. No minimum lot size is required. ADUs must meet height, setback, and lot coverage standards, along with hillside and seismic safety rules. Properties with code violations or unpermitted structures are ineligible, and sites in hillside or environmentally sensitive areas may need additional review.

For the most current and complete information, refer directly to the City of Scotts Valley.