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Cass County, MO Right to Farm: Agricultural Zoning Protection (2026)

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

Key Facts

District
'A' Agricultural District, § 400.270
Minimum lot
20 acres, 400 ft width
Residential cap
2 single-family homes per tract
Farm structure height
No restriction
Farmhouse height
2.5 stories, 35 ft at eave
Setbacks
50 ft front/rear, 25 ft side

Summary

Cass County's 'A' Agricultural District, Zoning Order § 400.270, protects farmland from non-agricultural development: it caps most agricultural tracts at two single-family residences on 20 acres or more, exempts farm structures from any height limit, and reserves additional farmworker housing for a Special Use Permit.

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.

Intent. To preserve and protect land valuable for agriculture and as open space from other, non-agricultural activities and use. This district is not intended for the development of low density residential areas. ... Residential uses are permitted within this district with a maximum of two (2) single-family residences permitted on an agricultural tract of land of not less than twenty (20) acres. Additional residences for persons or family members engaged in the agricultural operation may be permitted by Special Use Permit. ... a. ... Minimum Lot Area. Twenty (20) acres or more. b. Minimum lot width shall be four hundred (400) feet at the road frontage or building setback line.

Full Breakdown

270 establishes the 'A' Agricultural District to preserve and protect land valuable for agriculture and open space from non-agricultural activity, and states plainly that the district is not intended for low-density residential subdivision. 270(C). 270(D)(1)(a), while a farmhouse is capped at two and one-half stories and thirty-five feet at the eave, and other accessory buildings are held to one story and a fourteen-foot sidewall, sixteen feet with sealed engineered drawings. Setbacks in the district run fifty feet from the road right-of-way on the front, twenty-five feet on the side, and fifty feet on the rear, and a lot with frontage on two roads needs a front setback on both.

Minimum lot size is twenty acres with at least four hundred feet of width at the road frontage or building setback line. 270(F): a single-family residence built as a farm residence on five contiguous acres or more before February 1, 2005 can keep operating as Rural Residential without meeting the twenty-acre and lot-width standards that apply to new agricultural residences.

Violations & Fines

Cass County Code § 400.270 carries no violation-specific fine, so exceeding the two-residence cap, building on an under-sized tract, or violating a setback in the Agricultural District falls under the Code's general penalty, § 100.210: a civil penalty of up to $1,000, with every day the violation continues counted as a separate offense. The Cass County Zoning Officer and Board of Zoning Adjustment handle enforcement and any appeal.

Frequently Asked Questions

How many houses can go on an agricultural tract in unincorporated Cass County?
Up to two single-family residences on a tract of at least twenty acres, under § 400.270(B)(1). Additional housing for family members engaged in the farming operation is possible, but only with a Special Use Permit; the base zoning does not allow unlimited farmhouses on a single tract.
Is there a height limit on barns in the Cass County Agricultural District?
No. Section 400.270(D)(1)(a) states there is no height restriction on farm structures in the 'A' Agricultural District. Residences are capped at two and one-half stories and thirty-five feet at the eave, and non-farm accessory buildings at one story and a fourteen-foot sidewall, sixteen feet with engineered drawings.
Can an old farmhouse on a small lot stay in the Agricultural District?
Yes, under the farmstead exception in § 400.270(F). A single-family residence built as a farm residence on five or more contiguous acres before February 1, 2005 is designated Rural Residential and can be exempt from the district's twenty-acre minimum and lot-width standards that apply to new agricultural residences.

Sources & Official References

Other rules in Cass County

All Cass County rules

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