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Clay County, MO Building Setbacks & Zoning: Lot Coverage Limits (2026)

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

Key Facts

Residential cap
None; lot size controls
AG minimum lot
20 acres
C-1 building cover
60 percent
Conservation dev
30% impervious
Stormwater
LDC Sec. 151-11

Summary

Clay County's Land Development Code puts no blanket impervious-surface cap on rural residential lots, controlling bulk through large minimum lot sizes and setbacks instead. Commercial districts cap building cover, and conservation developments cap impervious use at 30 percent.

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

Maximum Coverage Area Maximum building cover 60 percent Maximum gross floor area 12,000 square feet

Source: Revised Statutes of MissouriView official code

Official source re-checked September 8, 2026: the cited page had not changed since it was quoted.

Full Breakdown

Unlike many suburban cities, unincorporated Clay County has no flat residential lot-coverage percentage. The Land Development Code limits density with large minimum lot sizes, from 20 acres in the Agricultural district and 10 acres in R-1 down to smaller Residential Urban lots, plus the district setbacks. Where coverage is capped directly, it appears in the commercial and conservation rules: the Neighborhood Commercial (C-1) district limits building cover to 60 percent (LDC Sec. 151-4.11), and Conservation Developments cap impervious uses at 30 percent. Stormwater standards under Sec. 151-11 apply to larger projects. Cities like Liberty and Gladstone set their own coverage limits.

Violations & Fines

Exceeding a district's coverage or impervious limit blocks plan approval and may require removing pavement or structures. Enforcement runs through LDC Sec. 151-14 and the county's stormwater rules.

Frequently Asked Questions

Is there a lot-coverage limit for homes in unincorporated Clay County?
Not a flat percentage. The Land Development Code controls density through minimum lot sizes and setbacks rather than a residential impervious-coverage cap.
What is the coverage limit for commercial property?
The C-1 Neighborhood Commercial district caps building cover at 60 percent under LDC Sec. 151-4.11. Conservation Developments cap impervious uses at 30 percent.

Sources & Official References

Other rules in Clay County

Setback RulesSome RestrictionsStructure Height LimitsSome RestrictionsAnimal Ordinances: Wildlife FeedingSignificant RestrictionsFire Regulations: Brush ClearanceSignificant RestrictionsPublic Conduct: Public Alcohol UseSome RestrictionsSpecial Events & Permits: Park Event PermitsSignificant RestrictionsSpecial Events & Permits: Street Fair RulesSignificant RestrictionsSoliciting & Door-to-Door: Solicitor PermitsLight Restrictions

All Clay County rules

Compare Clay County to another location·View the Missouri building setbacks & zoning overview

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