Accessory Structures in Richardson, TX (2026)
5 verified accessory structures rules for Richardson, Texas, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Richardson's Comprehensive Zoning Ordinance (Appendix A) governs accessory dwelling units. ADUs are subject to the same lot coverage, setback, and height limitations as other accessory structures. Residential zoning districts may restrict secondary dwelling units.
Richardson Accessory Dwelling Unit (ADU) Rules
Some RestrictionsShed Rules
A building permit is required for all accessory structures over 40 sq ft. Structures 150 sq ft or less cannot exceed 12 ft in height. Structures over 150 sq ft cannot exceed 25 ft. Total accessory structure area may not exceed 8% of lot area or 40% of the dwelling size.
Richardson Shed & Accessory Building Rules
Some RestrictionsGarage Conversions
Garage conversions in Richardson require a building permit from Building Inspection. The converted space must meet all residential building codes including egress, electrical, plumbing, and structural requirements. Loss of required parking spaces may trigger zoning issues.
Richardson Garage Conversion Requirements
Some RestrictionsCarport Rules
Attached carports are allowed with a permit; detached metal carports are restricted and front-yard carports are generally prohibited in Richardson.
Richardson Carport Regulations
Some RestrictionsTiny Homes
Tiny houses must meet minimum dwelling size and IRC construction standards; RV-style tiny houses on wheels are not allowed as permanent residences.
Richardson Tiny Home Rules
Heavy RestrictionsLooking for Dallas County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Richardson city rules.
Accessory Structures in Dallas County →