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Cass County, MO Fence Regulations: Material Restrictions (2026)

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

Key Facts

Electric fence minimum lot size
3 acres or greater
Electrical standard
Must meet Building Codes requirements
Barbed wire
Not separately restricted
Governing section
Zoning Order § 400.030(A)(23)(o)(2)
Max fine
$1,000 per day

Summary

Cass County's Zoning Order does not ban barbed wire, but it restricts electric fencing: electric fences are allowed only on lots of three acres or more, and any electric fence installed must meet the County Building Codes' electrical standards, under Section 400.030(A)(23)(o)(2).

These county ordinances apply to unincorporated areas of Cass County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

Electric fences shall be permitted on lots of three (3) acres or greater in size and must conform to Building Codes standards regarding electrical usages.

Full Breakdown

' Read together with the height rule in the same subsection, that means a typical suburban residential lot under three acres cannot have an electric fence at all, while agricultural and larger rural-residential parcels, common across unincorporated Cass County's A, R-R and R-S districts, can use one if it also satisfies the electrical standards the County Building Codes Department enforces under Chapter 500. The Zoning Order does not separately prohibit barbed wire, chain link, or other fencing materials for residential use; the acreage threshold applies specifically to electrified fencing, which is the material category the code singles out for its own standard. 030(A)(23)(o) that apply to fences generally. 030(A)(22)(e).

Violations & Fines

Installing an electric fence on a residential lot under three acres, or one that doesn't meet the Building Codes Department's electrical standards, is a Zoning Order violation. After notice from the Zoning Enforcement Officer, the owner has ten days to remove or correct it before the case is referred to Circuit Court, where fines run up to $1,000 per day under Section 400.030(A)(22)(e).

Frequently Asked Questions

Can I put up an electric fence on my Cass County residential lot?
Only if the lot is three acres or larger. Section 400.030(A)(23)(o)(2) limits electric fencing to lots of three acres or more, and the installation must also meet the County Building Codes Department's electrical standards. A lot under three acres cannot have an electric fence at all, no matter its use.
Does Cass County ban barbed wire fencing?
No. The Zoning Order's fence provisions in Section 400.030(A)(23)(o) regulate height, setback placement and electric fencing by lot size, but they do not separately prohibit barbed wire, chain link or other common residential fence materials.
What standard must an electric fence meet besides the acreage minimum?
It must conform to Building Codes standards regarding electrical usages, per Section 400.030(A)(23)(o)(2), meaning the installation is also subject to the County Building Codes Department's electrical requirements enforced under Chapter 500, not just the Zoning Order's acreage rule.

Sources & Official References

Other rules in Cass County

All Cass County rules

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