Denton County, TX Accessory Structures: Garage Conversions (2026)

Converting a garage to habitable living space in Denton County requires a building permit from the applicable city or county building department. The conversion must meet all residential building code requirements for habitable space, including proper ceiling height of at least 7 feet, adequate natural light and ventilation through windows meeting egress requirements, insulation to current energy code standards, HVAC extension, smoke and carbon monoxide detectors, and electrical circuits meeting current code. Most cities in Denton County require a minimum number of off-street parking spaces per dwelling unit, typically two enclosed or covered spaces for single-family homes. Converting a two-car garage may create a parking deficiency that prevents approval unless alternative covered parking is provided. The garage door opening must be properly framed and finished with wall construction matching the exterior of the home. Plumbing additions require separate plumbing permits. If the conversion creates a separate dwelling unit, it must comply with ADU regulations where applicable. In unincorporated areas, the Denton County Development Department handles permitting. HOA deed restrictions in many Denton County communities explicitly prohibit garage conversions or require architectural review board approval.