Whenever any owner or occupant of any property in the Town of Montour shall, for any purpose or in any manner, establish a new use, commercially clear, excavate or grade more than 10,000 square feet of land or any land for purposes of making permanent structural improvements to a property that would otherwise require a permit hereunder; change an existing use, make permanent structural improvements to a property that would require a permit under the New York State Building Code; erect a new building, move, alter, add to or enlarge any existing land use or building such owner or occupant shall first comply with the requirements of this chapter and obtain any approvals and permits required hereunder, unless specifically exempted from such requirements by this chapter. An approval shall be required whenever a change in land use occurs, regardless of whether or not any new construction is involved hereunder, excepting agricultural activities and single-family home construction.