Boone County, MO Zoning Overlays & Bonuses: Density Bonus Law (2026)
Key Facts
- Basis
- Net development area divided by unit area
- A-1P water credit cap
- 60% of open space
- R-SP/R-DP/R-MP water credit cap
- 5% of open space
- Applies to
- A-1P, A-2P, A-RP, R-SP, R-DP, R-MP
Summary
Planned Residential Developments in Boone County can count water-covered open space toward density calculations, with the credit capped from 5% to 60% depending on the underlying parent district.
6.6.5 Density. The number of dwelling units permitted shall be determined by dividing the net development area within the proposed PRD by the net development area per residence required by the corresponding non-planned parent zoning district... Land covered by water may be included in the open space, for purposes of calculating density... Planned Agriculture, A-1P 60% ... Planned Single-Family Residential, R-SP 5%
Official source re-checked September 7, 2026: the cited page had not changed since it was quoted.
Full Breakdown
Under Section 6.6.5, a Planned Residential Development's allowed unit count is the net development area divided by the per-residence area of its non-planned parent district (10 acres in A-1, 2,500 sq ft in R-M, for example). Land covered by water may be counted toward the open-space area used in that calculation, up to 60% in Planned Agriculture (A-1P), tapering down to just 5% in the Planned Single-Family, Two-Family and Moderate-Density districts.
Violations & Fines
Counting water area toward density beyond the district's capped percentage, or building more units than the net-area formula supports, is grounds for the Commission to reject or revoke PRD approval.
Frequently Asked Questions
Can open water count toward density in a Boone County PRD?
How is density set for a Planned Residential Development?
Sources & Official References
Other rules in Boone County
Compare Boone County to another location·View the Missouri zoning overlays & bonuses overview
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