πŸ“’ 2026 Update: New California ADU laws are now in effect. Read the guide β†’

Data Sources

All data on PermitEngine is sourced exclusively from official government websites. We do not use third-party data providers or user submissions.

πŸ›οΈ Municipal Government Websites

Primary source for fee schedules, zoning codes, and permit requirements.

Examples: cityofirvine.org, austintexas.gov, nyc.gov

πŸ“„ Official Fee Schedules

Published PDF documents and rate cards from building departments.

Updated frequency: Monthly

πŸ“š Municipal Code Repositories

Official zoning ordinances and building codes.

Examples: Municode, American Legal Publishing

πŸ—ΊοΈ State-Level Databases

State construction codes, licensing requirements, and regulatory frameworks.

All 50 states + DC covered

βœ… Verification Process

Every data point is cross-verified against multiple official sources before publishing. Our automated system checks for updates daily and flags discrepancies for manual review.