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Collin County, TX Home Business: Signage Rules (2026)

Few Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

County Rule
None unincorporated
ROW Signs
TXDOT rules
Typical City
1-2 sq ft max
Illuminated
Banned residential
HOA
Often total ban

Summary

Collin County imposes no sign regulations on unincorporated residential home businesses. TXDOT regulates signs in rights-of-way. Cities within the county typically prohibit commercial signage on residential lots or limit to one small professional nameplate under 2 sq ft.

City-specific rules exist: Allen, Frisco, McKinney, and Plano have their own signage rules rules that differ from Collin County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

Sec. 394.021. ERECTING OFF-PREMISE SIGN WITHOUT PERMIT; OFFENSE. (a) A person commits an offense if the person erects an off-premise sign unless the person first obtains a permit under this subchapter from the commission.(b) Except as otherwise authorized by this chapter, the commission may not issue a permit for an off-premise sign unless the sign is to be located:(1) within 800 feet of a recognized commercial or industrial business activity or the office of a governmental entity; and(2) on the same side of the road as the business activity or the office of the governmental entity.(b-1) If the off-premise sign is located within the jurisdiction of a municipality with a population of more than 1.9 million that is exercising its authority to regulate off-premise signs, the commissio

Source: TX Transportation Code 393View official code

Full Breakdown

TX Transportation Code 393 and TXDOT rules control signs within state highway rights-of-way. On private unincorporated property, no county sign ordinance applies. HOAs and deed restrictions are the primary controls, typically banning all commercial signage in residential communities. Cities: Plano allows 1 sq ft nameplate; McKinney and Frisco have similar limits. Illuminated or freestanding commercial signs universally prohibited in residential districts.

Sources & Official References

Other rules in Collin County

All Collin County rules

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Signage Rules in Cities Across Collin County