Building Setbacks & Zoning in Clark County, WA (2026)
3 rules for unincorporated Clark County, Washington.
Verified from official government sources
Setback Rules
In Clark County's rural residential districts (R-20, R-10, R-5), the minimum front setback is 50 feet from a road, side setback 25 feet from a street and 20 feet interior, and rear setback 20 feet. Greater setbacks apply near resource or surface-mining land.
Building Setback Requirements in Clark County
Some RestrictionsCCC 40.210.020, Table 40.210.020-3, note 1
Minimum side setback on each side of the residential dwelling and incidental buildings shall be twenty (20) feet unless fire regulations require a greater setback, and fifty (50) feet for accessory buildings used for agricultural purposes.
Structure Height Limits
In Clark County's rural residential districts (R-20, R-10, R-5), the maximum building height for residential buildings is 35 feet, per Table 40.210.020-3 of the Unified Development Code. Urban zones and scenic-review areas may set different limits.
Building Height Limits in Clark County
Some RestrictionsCCC 40.210.020, Table 40.210.020-3, note 3
Maximum Building Height (feet): 35. [Footnote 3] Residential buildings only.
Lot Coverage Limits
Clark County's rural residential districts (R-20, R-10, R-5) set no numeric maximum lot coverage in Table 40.210.020-3 (listed as N/A). Coverage is effectively controlled by large minimum lot sizes and the required setbacks. Urban zones have their own coverage limits.
Lot Coverage Rules in Clark County
Some RestrictionsCCC 40.210.020, Table 40.210.020-3
Maximum Lot Coverage: N/A [for R-20, R-10, R-5].
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