ADU rules in Conroe, TX — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Conroe has no zoning code prohibiting ADUs. Accessory dwelling units require a building permit under Chapter 14 and must meet IRC standards. Structures under 200 sq ft without utilities are exempt only if not used as dwellings.
The City of Conroe has no zoning ordinance restricting accessory dwelling units (ADUs or guest houses). ADUs are regulated through building codes under Chapter 14. All structures intended as dwellings require building permits regardless of size, because the 200 sq ft exemption for accessory structures specifically excludes structures used as dwellings. ADUs must meet the International Residential Code (IRC 2012) standards for habitable spaces including minimum ceiling heights, egress windows, and ventilation. Deed restrictions in many Conroe subdivisions may prohibit secondary dwelling units. Contact Permits at 936-522-3610.
Building without a permit results in stop-work orders and fines. Deed restriction violations are enforceable by HOA.
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Side-by-side rule comparisons with other cities in Montgomery County.
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