The Minnehaha Planning and Zoning Office regulates a three-mile area shared with the City of Sioux Falls and all other rural areas in the county outside of Sioux Falls city limits. This office performs the following duties - maintains a comprehensive plan, administers the zoning ordinance, issues county building permits, building inspection outside city limits, oversees Minnehaha County parks, issues septic system construction permits to state registered installers, enforces building regulations in the county and three mile joint area, checks into nuisance reports, such as junk yards, and enforces flood plain regulations.