Estimate ADU Fees and Costs

The ADU Fee Estimator tool has been developed to estimate Santa Cruz County fees specifically for ADU projects! Applicants enter information about ADU projects and based on the information provided, the tool estimates County fees, project costs, and cash flow over time.

PLEASE NOTE: This tool does NOT estimate fees for non-County agencies. Also, fees for Junior ADUs (JADUs) will be the same as fees for standard home renovation projects. Any non-ADU project (including a JADU project) should instead use the County’s standard Residential Building Permit Fee Estimate Worksheet for accurate fee estimates.

QUESTIONS about how to use the Fee Estimator? Please consult our Fee Estimator Instructions for ADU Projects. If you still have questions, Building and Zoning staff is happy to help you understand our fees. Please contact or call (831) 454-2130 for questions related to planning and zoning and (831) 454-2260 for questions related to building permits.