There must be a minimum increase of $1,150 in Assessed Valuation for residential property (which equates to about $10,000 in appraised value) and $2,500 in Assessed Valuation (which equates to about $10,000 in appraised value depending on the type of business) for commercial, industrial or agricultural property. New, as well as existing improvements must conform with all codes, rules and regulations in effect. You should secure a building permit for most improvements, where applicable. Call the County or City Zoning Board to find out if you need a building permit. If building in the 3-mile zone surrounding the City of Larned or the City of Larned, contact the Larned City Zoning Administrator.