Residential development is partially limited by how much of a lot can be hardscaped.
Hardscape is any impervious surface, area covered with gravel or other material that is not vegetation, area that precludes the growth of vegetation, and areas under overhangs that exceed 18 inches. (SMC 21.04.040.B).
Hardscape coverage is calculated by dividing the amount of hardscape by the size of the lot.
MAXIMUM HARDSCAPE COVERAGE
R-1
R-4
R-6
R-8
R-12
R-18
30%
40%
50%
75%
85%
85%
DEPARTMENT OF PUBLIC WORKS STORMWATER REGULATIONS APPLY IN ADDITION TO THE ABOVE MAXIMUMS.
