Shed Installation Permits in McKinney

Local Rule

City of McKinney Building Inspections/Permits Department; McKinney Code of Ordinances Chapter 122 (Construction Regulations), local amendment to IRC Section R105.2

McKinney exempts a one-story detached accessory structure from a building permit when the floor area does not exceed 120 square feet, per a local amendment to the adopted Residential Code cited directly in the city's own Code of Ordinances. Larger accessory structures, including detached garages, sheds, and carports exceeding 120 square feet, require a building permit. Retaining walls over 2 feet in height require engineered plans regardless of the wall's overall height. McKinney permits are valid for 180 days from issuance; an extension can be requested from the Building Inspections Department if work has not begun within that window.

Source · Verified September 2026

McKinney Building Department

Hours and procedures can change — call ahead to confirm.

How This Compares to Collin County

McKinney's own rule is shown above (No permit under 120 sqft). Here is the separate rule that applies at the county level, for context:

No confirmed county-level shed-specific citation for unincor

Unincorporated Texas counties commonly follow an informal ~200 sq ft exemption threshold, though Collin County itself has no dedicated shed-specific citation confirming this as official policy. Private deed restrictions may still apply.

See the full county page

Nearby Cities with Verified Rules

Other cities near McKinney with a confirmed shed installation rule:

FAQs

Building It Yourself? Here's What You'll Need

Popular tools and materials homeowners use for a shed installation project:

As an Amazon Associate, we earn from qualifying purchases.