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RCD Density Worksheet
Calculating the Number of Lots in the Rural Community District (RCD)
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Zoned Density. According to 5-1.03.D.1 of the Zoning Ordinance, the Zoned Density in the RCD district is one lot per 20 acres (0.05 units per acre). Therefore, multiply the acreage by 0.05 and round down to the nearest whole number determine the Zoned Density. Tidal and non-tidal wetlands must be subtracted from the gross tract acreage before calculating density.
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Zoned Density = Gross acreage ______ - wetland acres ______ = ______ net acres x 0.05 = ______ lots
(round down)
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Conventional Lot Density. With exception lots (Section 5-1.03.D.2) it is possible to exceed zoned density. Without TDRs, the number of lots available is determined by taking 25% of the number obtained through the formula in the table below (Section 5-1.03.D.3):
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1a
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Total Acreage of parcel
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_______ acres
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1b
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Minus total acreage of tidal and non-tidal wetlands
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_______ acres
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1c
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Subtotal A: Net acreage
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_____ acres
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2a
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Total exception lots remaining (Section 5-1.03.D.2)
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_____lots
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2b
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Subtotal A: Net acreage (Line 1c)
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_____ acres
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2c
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Minus total acreage in exception lots
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_____ acres
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2d
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Net acreage remaining for conventional lots
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_______ acres
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2e
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Divide Line 2d by 5
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_____ lots
(round down)
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3a
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Total # of permitted exception lots (Line 2a)
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_____ lots
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3b
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Subtotal B: Conventional density (Line 2e)
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_____ lots
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3c
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Add Line 3a to 3b
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_____ lots
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3d
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Divide Line 3c by 4 =
Subtotal B: Total conventional lots permitted
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_____ lots
(round to nearest whole number)
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TDR Lots. With TDRs it is possible to exceed conventional density (Section 5-1.03.D.4) up to a maximum of 1 lot per 10 acres (0.10 units per acre).
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4a
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Subtotal A: Net acreage (Line 1c)
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_____ acres
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4b
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Divide Line 4a by 10 =
Number of additional lots
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_____ lots
(round down)
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4c
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Subtotal B: Total conventional lots permitted (line 3d)
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_____ lots
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4d
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Subtract Line 4c from Line 4b =
Subtotal D: Number of TDR Lots
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_____ lots
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Receiving Area Lots. In a receiving area it is possible to exceed a density maximum of 1 lot per 10 acres. The density and area requirements in Receiving Areas, with the use of TDRs, is defined in Section 5-1.03.D.5. For Receiving Areas more than a mile from a TC (calculate distance per Section 2-10.02.C) the maximum density is one lot per 4 acres. For Receiving Areas less than a mile from a TC the maximum density is one lot per acre. Also five TDRs shall be used for each lot or dwelling unit which is created in excess of the maximum lots calculated in Subtotal D above.
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If greater than one mile from a Town Center
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5a
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Subtotal A: Net acreage (Line 1c)
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_____ acres
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5b
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Divide Line 5a by 4 =
Gross number of additional receiving area lots
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_____ lots
(round down)
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5c
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Subtotal C: Total conventional lots permitted (Line 3d)
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_____ lots
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5d
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Subtotal D: Total TDR lots permitted (Line 4d)
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_____ lots
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5e
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Add Line 5c to Line 5d =
Number of conventional and TDR lots
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_____ lots
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5f
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Subtract Line 5e from Line 5b =
Subtotal E: Number of Receiving Area lots
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_____ lots
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If less than one mile from a Town Center
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5a
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Subtotal A: Net acreage (Line 1c) rounded down
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_____ lots
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5b
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Subtotal C: Total conventional lots permitted (Line 3d)
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_____ lots
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5c
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Subtotal D: Total TDR lots permitted (Line 4d)
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_____ lots
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5d
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Add Line 5b to Line 5c =
Number of conventional and TDR lots
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_____ lots
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5e
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Subtract Line 5d from Line 5a =
Subtotal E: Number of Receiving Area lots
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_____ lots
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Summary of Lots Permitted
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6a
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Subtotal C: # of Conventional lots (Line 3d)
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_____ lots
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6b
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Subtotal D: # of TDR lots (Line 4d)
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_____ lots
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6c
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Subtotal E: # of Receiving Area lots
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_____ lots
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6d
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Add Lines 6a, 6b and 6c together =
Total Lots Possible
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_____ lots
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Summary of TDRs Required
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7b
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Subtotal E: # of Receiving Area lots
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_____ lots
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7c
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Add Line 7a to Line 7b and multiply the sum by 5 =
Total TDRs required for additional lots
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_____ TDRs
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Family Conveyance Lots. Refer to calculations for Farm and Forest District (FFD).
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