Zoning Overlays & Bonuses in Iron County, UT (2026)
1 rule for unincorporated Iron County, Utah.
Verified from official government sources
Note: These county rules apply to unincorporated areas of Iron County. If you live within an incorporated city, that city's own rules apply: see the city list below.
Density Bonus Law
In unincorporated Iron County, the Performance Subdivision Option lets developers earn extra lots on R-1/2 zoned land by qualifying for density bonus points. Base density is two units per acre; scoring enough performance points under Iron County Code § 16.23.030 raises density up to six units per acre with matching open-space set-asides, provided the tract holds at least twenty contiguous acres.
Iron County performance subdivision density bonus
Some RestrictionsIron County Code §§ 16.23.020, 16.23.030
The performance subdivision option may be allowed in the residential R-1/2 zoning district, with approval of the appropriate land use authority. ... A.The number of subdivision lots allowed in a performance subdivision shall be determined by qualifying for density bonus points identified in Section 16.23.040, and as follows: Level Density (unit/GDA*) Performance Requirements A 2 units/acre 0% o...
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