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P21-1173, PUD-146 and Tract 8631: 475 & 493 St. John Street Planning Commission 7 of 32 Site Design and Development Figures 5 and 6 provide an overall view of the site plan and vesting tentative map layout for the proposed project. The designation of lots and parcels are as follows: Lots 1-14 to each single-family home, Lot 15 to the commercial development, Parcel A to the existing home, Parcel B to the new private hammerhead street, Parcel C (located behind lots 8-14) will remain undevelopable and permanent open space maintained by the new residential subdivision’s association, and Parcel D (between Lots 11 and 12) is an access easement to Parcel C. The existing home (Parcel A) and commercial buildings and plaza (Lot 15) are situated to face St. John Street and the 14 new single-family homes will be located behind (north) the existing home (Parcel A) and parking lot of the commercial buildings on the commercial lot (Lot 15). The applicant is proposing a PUD development plan which establishes as-built development standards, meaning future development (i.e., additions) and/or accessory structures would not be permitted for Lots 1-14 as the setbacks, lot size, floor area ratio, and height would remain as-built. The Barone’s property (Parcel A) would be subject to the development stand ards of the R-1-10,000 Zoning District and Lot 15 would be subject to the Mixed -Use-Downtown Zoning District of the Pleasanton Municipal Code (PMC). No development would be allowed on or within the open space area and access easement (Parcels C and D). Residential. As noted, the existing single-family residence would be maintained and expanded. The approximately 1,360 square foot addition to the north of the home will include a two-car garage and storage area on the ground floor and an attic/storage space on the second floor. A new private driveway to the new garage will be provided on the west s ide of the new private street. No other modifications are proposed to the existing home. Lots 1 through 14 would be developed with detached two-and-a-half-story, single-family homes2. The lots range in size from approximately 2,173 to 3,290 square feet in area. The single-family homes range in size from approximately 3,316 to 3,783 square feet in area and approximately 28 feet 5 inches to 30 feet 4 inches in height3. Details of the plan type square-footages, building heights, and floor plans of designation spaces are provided in Exhibit B. Commercial. Lot 15 would be developed with two, single-story commercial buildings. Building A is approximately 1,300 square feet in area and approximately 19 feet in height and Building B is approximately 1,825 square feet in area and approximately 21 feet in height (measured from finished grade to the top of the parapets). An approximately 1,568-square-foot plaza with seating and a decorative iron entry archway will separate the two commercial buildings, and a 13-stall commercial parking lot will be constructed to the north (rear) of the commercial buildings. An approximately 139-square-foot restroom and approximately 211-square-foot commercial trash enclosure will be constructed between the parking lot and Building B. Details of commercial square-footages, building heights, and open floor plans are provided in Exhibit B. 2 The wall-to-wall separation between the new homes is one foot. 3 Height is measured from average grade covered by the structure to the mean height between the roof ridge and eave.