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Connecticut Zoning & Land Use Guide

Last updated: Verified:

Comprehensive guide to Connecticut zoning laws, building codes, and land use regulations.

Key Facts

  • Building Code: 2018 CT State Building Code (based on IBC)
  • State ADU Law: Yes — ADU-friendly
  • ADU Details: PA 21-29 (2021) requires all Connecticut municipalities to allow accessory dwelling units as of right on lots with single-family homes, prohibiting special permit or public hearing requirements and capping local regulations on size, parking, and other conditions.

Cities in Connecticut