Lot for sale If 19-31 Mount Vernon Ave plus 9 North Bond are purchased together: An allowable mixed-use building up to 5 stories | 60' maximum height can be developed. The footprint of the Mount Vernon Avenue assemblage equals 23,693. The usable open space by code requires 200 sf per dwelling unit. Allows commercial on first floor. Parking requirements are 1 space per dwelling unit for up to two bedrooms. 9N Bond St would house the parking req. Development calculation: 23,693 sf at 80% rule X 4 stories equaling 75,818 sf of residential with retail on the 1st floor, zoning approval req. Ownership would like to sell the assemblage "As Is" so please make your offer with this consideration. 19-31 Properties must be sold as part of the assemblage.