Shed permit rules in Collin County, TX — also referred to as storage shed, backyard shed, or accessory building regulations — set size limits, setbacks, and when a building permit is required.
Sheds in unincorporated Collin County require a building permit only if over 200 sq ft (per IRC) or if electrical/plumbing is installed. No setback or height limits at county level. Floodplain Development Permit required if in a FEMA Special Flood Hazard Area.
IRC R105.2 exempts one-story detached accessory structures under 200 sq ft from building permits. Over 200 sq ft requires permit, inspection, and compliance with IRC structural/wind load (90 mph exposure B typical). Electrical service to shed requires separate electrical permit. No setbacks enforced in unincorporated areas unless deed restrictions apply. Manufactured sheds (Tuff Shed, etc.) follow same rules as stick-built.
Contact your local code enforcement office for specific penalty information.
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See how Collin County's shed rules rules stack up against other locations.
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