Mathematical determination of yield. The mathematical determination
of yield is intended to be a simplified method to determine the maximum
number of dwelling units allowed on the parcel(s). The mathematical
determination of yield is calculated as follows:
Step 1: Determine presumed area of developable land. Based on
the material shown on and submitted with the base plan, the applicant
shall work with the Planning Board to determine the presumed area
of developable land.
Step 2: Calculate presumed amount of developable land. The mathematical
determination of yield assumes 30% of the developable land area is
needed for infrastructure improvements. For the purposes of the mathematical
determination of yield, the presumed area of developable land determined
in Step 1 is multiplied by 70% to indicate the total amount of developable
land.
Example: On a 100-acre parcel, 60 acres are determined, after
working with the Planning Board, to be the presumed area of developable
land. The presumed amount of developable land is 42 acres (60 x 0.7).
Step 3: Calculate the maximum number of allowable lots. The
maximum number of allowable lots is determined by taking the presumed
amount of developable land and dividing it by the minimum lot area
requirement in the zoning district as shown in Section 4.0, Schedule
of Dimensional Requirements.
Example: From the example above, the amount of developable land
is 42 acres. The minimum lot size in the R4 District is two acres.
Therefore, the maximum number of allowable lots is 21 (42 ÷2.0).