3 rules for unincorporated Hawaii County, Hawaii.
Verified from official government sources
Setbacks vary by zoning district and lot size. In the common RS single-family district, front and rear yards run 15 to 25 feet and side yards 8 to 15 feet, increasing with lot area. Required yards must stay open and unobstructed from the ground up.
HCC 25-5-7(1)
The minimum yards in the RS district shall be as follows: (1) On a building site with a required area of seven thousand five hundred square feet to and including nine thousand nine hundred ninety-nine square feet: (A) Front and rear yards, fifteen feet; and (B) Side yards, eight feet.
Height caps are set per zoning district. The RS single-family district limits buildings to 35 feet. Accessory structures are capped at 20 feet, and no building may exceed its district height limit except for specific exempt features.
HCC 25-5-4
The height limit in the RS district shall be thirty-five feet.
Hawaii County zoning does not cap lot coverage by a percentage. Instead it controls how much you can build through minimum building-site area, minimum width, and required yards. In the RS district each dwelling needs at least 7,500 square feet.
HCC 25-5-5
The minimum building site area in the RS district shall be seven thousand five hundred square feet.
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