Collin County, TX Fence Regulations: Height Limits (2026)
Key Facts
- County Standard
- None published
- TxDOT
- State highway clear zones
- Typical Triangle
- 25 feet
- Max Height
- 30 inches
- Liability
- Common-law negligence
Summary
Collin County does not publish a sight triangle ordinance. TxDOT maintains clear zones along state roads. Common-law negligence standards require property owners to avoid obstructing sight distance at intersections. Typical municipal standard is 25-foot triangle with max 30-inch height.
Sec. 143.028. FENCES. (a) A person is not required to fence against animals that are not permitted to run at large. Except as otherwise provided by this section, a fence is sufficient for purposes of this chapter if it is sufficient to keep out ordinary livestock permitted to run at large.(b) In order to be sufficient, a fence must be at least four feet high and comply with the following requirements:(1) a barbed wire fence must consist of three wires on posts no more than 30 feet apart, with one or more stays between every two posts;(2) a picket fence must consist of pickets that are not more than six inches apart;(3) a board fence must consist of three boards not less than five inches wide and one inch thick; and(4) a rail fence
Full Breakdown
Collin County has no codified corner-visibility or 'sight triangle' rule for unincorporated intersections. TxDOT maintains clear-zone standards along US-75, US-380, SH-121, SH-5, SH-78, and FM roads per the TxDOT Roadway Design Manual (typical 25–30 ft AASHTO intersection sight distance). The Collin County Engineering Department Subdivision Regulations (Art. VI) require corner-clip easements on new plats but do not retroactively regulate existing fences. Property owners can be sued for common-law negligence if a sight-blocking fence contributes to an intersection collision (see *Nixon v. Mr. Property Mgmt.*, 690 S.W.2d 546 (Tex. 1985)). City standards: Plano §18-307 and §21-305 require 25-ft sight triangle, nothing over 30 in tall; Frisco §102-34 uses 25 ft / 30 in; McKinney §138-275 uses 30 ft / 30 in; Prosper §1.09.051 uses 25 ft / 2 ft. HOAs under TX Property Code Ch. 202 often mirror city rules.
Violations & Fines
No county fine. City fines $50–$500 for sight-triangle violations. Civil liability possible under common-law negligence.
Frequently Asked Questions
What is a sight triangle?
Can I be sued for a fence that caused a crash?
Does Collin County enforce this?
Sources & Official References
Other rules in Collin County
How Collin County compares: Cities That Allow the Tallest Residential Fences·Texas rules heatmap·Compare Collin County to another location·View the Texas fence regulations overview
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