Section 96-51 - Mandatory Tree Planting Provisions
In addition to the applicable underlying street tree planting requirements, tree planting provisions shall also apply to extensions or alterations, other than incidental alterations , involving 30 percent or more of the existing floor area of a building . For uses listed under Use Groups IV(B), IX(B), or X, the street tree planting requirements of Section 26-41 (Street Tree Planting) shall apply.