ADU rules in Hartford, CT — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
CT requires municipalities to allow ADUs as of right under PA 21-29 (2021 zoning reform). Hartford must permit ADUs on single-family lots.
Connecticut Public Act 21-29 (2021 zoning reform) requires municipalities to allow accessory dwelling units (ADUs) in residential zones as of right on lots with single-family homes. This is a significant state mandate. Hartford may adopt reasonable regulations (size limits, setbacks, design standards) but cannot effectively prohibit ADUs. This law is relatively new and implementation varies by town. Typical conditions include maximum size limits, owner-occupancy preferences, and parking requirements.
Towns cannot deny conforming ADU applications under PA 21-29. Unpermitted ADU construction: standard code enforcement.
Hartford, CT
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See how Hartford's adu rules rules stack up against other locations.
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