FYI as of November 12, 2013, you don't need 5 acres of property to raise hens! You now only need 1/4 of an acre! Rules do apply. Lake County has amended the Unified Development Ordinance (UDO) to allow the keeping of bees, hens, and hoophouses used exclusively for local food production on residential properties in unincorporated areas. The UDO sets standards for the establishment and maintenance of beehives, chicken coops, and hoophouses. The following lot size requirements also apply: Hens may be kept on residential lots of a minimum of 10,000 square feet; the number of hens allowed on residential properties depends on the lot size, ranging from six hens on lots of a minimum of 10,000 square feet up to 12 hens on lots of a minimum 80,000 square feet.