Section 64-621 - Special floor area regulations for non-complying buildings
For buildings with non-complying floor area , the maximum amount of floor area in the altered, enlarged , relocated or reconstructed building shall not exceed the amount of pre-existing floor area , nor shall it exceed the maximum floor area permitted by the applicable district regulations by more than 20 percent. In addition, subsequent to such alteration, enlargement , relocation or reconstruction, no extension or change of use may create a new non-compliance or increase the degree of existing non-compliance with floor area .