Rowlett, TX Accessory Structures: Garage Conversions (2026)

Rowlett does not publish a standalone garage-conversion ordinance, but the work falls under the City's general permitting rules. The Zoning & Development Handbook states that a building permit is required prior to the construction, alteration, remodel, repair, or expansion of new and existing structures in the City of Rowlett, and that work must comply with the adopted International Building, Fire, and Energy Codes. Converting an attached garage into conditioned living space is an alteration, so it must be permitted and inspected. The conversion must still satisfy the Rowlett Development Code, including any minimum dwelling-size, parking, and zoning standards for the district; the City uses an online MYGOV plan and permit system for submittals. Importantly, Rowlett's Accessory Building Regulations (Section 77-303) provide that no accessory structure or portion of one may be used as a dwelling, so converting a detached garage into a separate living or rental unit is not allowed by right and would require zoning approval such as a Special Use Permit. Homeowners should confirm whether eliminating covered parking affects compliance with the district's parking and dwelling standards before converting, and a pre-development meeting or zoning verification letter is recommended. Always verify current requirements with the Community Development and Building Inspections Divisions.