Sign Code Authority
Chapter 150, Unified Development Code, adopted November 2022 — consolidates McKinney’s zoning and development regulations including permitted signs
Monument Sign Limit
8 ft maximum height in business and agricultural zoning districts — lower than several neighboring Collin County cities
Electronic Message Signs
60 sq ft maximum display size
Historic Downtown Restrictions
The downtown cultural district has long restricted neon signage by ordinance; exceptions have required City Council action rather than staff approval. Treat any illuminated storefront project near the square as a design-review project
Overlay Districts
Historic and corridor design overlays impose stricter standards on top of the underlying base zoning district
Variance Path
Requests to exceed the standard size, height, or placement rules go to the Board of Adjustment, which requires public notice and a hearing before a decision
Submittal Requirements
A site plan showing the sign’s exact location relative to property lines and the right-of-way — interior floor plans and rough sketches are returned. Tenants applying for a permit need written property owner authorization regardless of who files
Enforcement
Sign ordinance violations are a Class C misdemeanor subject to a fine up to the state maximum, with a rebuttable presumption of responsibility on the party associated with the sign
Suburban Coverage
Frisco, Allen, Plano, Prosper, Celina, Melissa, Anna, Princeton, Fairview, Lucas, Wylie
Wind-Load Standard
115 mph ultimate design wind speed, Risk Category II
Severe Weather Considerations
Active severe-hail corridor — impact-resistant polycarbonate faces, reinforced retainers, and sealed cabinets specified as standard; straight-line wind and tornado-region foundation anchoring; 100°F-plus summer thermal load on drivers and power supplies
Highway Frontage
US 75 Central Expressway, SH 121 Sam Rayburn Tollway, US 380 University Drive, SH 5, Custer Road, Hardin Boulevard — TxDOT permit required separately for signage visible from the state highway system
Permit Timeline
Standard wall or monument signs meeting code typically 2 to 3 weeks; structural stamps and electrical sub-permits extend it; Board of Adjustment variances add substantially more