Neighborhood Design | Residential Density Incentives
E. Rules for Calculating Total Permitted Dwelling Units
F. Review Process
1. The formula for calculating the total number of dwelling units permitted through RDI review is as follows:
1. All RDI proposals shall be reviewed concurrently with a primary proposal to consider the proposed site plan and methods used to earn extra density as follows: a. For the purpose of this section, a primary proposal is defined as a proposed subdivision, conditional use permit or commercial building permit; b. When the primary proposal requires a public hearing under this code or SDC 21.02.060, the public hearing on the primary proposal shall serve as the hearing on the RDI proposal, and the reviewing authority shall make a consolidated decision on the proposed development and use of RDI; c. When the primary proposal does not require a public hearing under this code or SDC 21.02.060, the RDI proposal shall be subject to the decision criteria for conditional use permits outlined in SDC 21.09.070 and to the procedures set forth for director/hearing examiner review in this Title; and d. The notice for the RDI proposal also shall include the development’s proposed density and a general description of the public benefits offered to earn extra density. 2. RDI applications that propose to earn bonus units by dedicating real property or public facilities shall include a letter from the applicable county receiving agency certifying that the proposed dedication qualifies for the density incentive and will be accepted by the agency or other qualifying organization.
DUs allowed by RDI site base density + Bonus DUs + DUs allowed by sending site density (if any) = Total RDI DUs
2. The total dwelling units permitted through RDI review shall be calculated using the following steps: a. Calculate the number of dwellings permitted by the base density of the site in accordance with SDC 21.04.030; b. Calculate the total number of bonus dwelling units earned by providing the public benefits listed in SDC 21.02.040D.; c. Add the number of bonus dwelling units earned to the number of dwelling units permitted by the base density; d. Add the number of dwelling units permitted by the base density of the site sending TDCs, if any; e. Round fractional dwelling units to the nearest whole number; 0.49 or less dwelling units are rounded down; and f. On sites with more than one zone or zone density, the maximum density shall be calculated for the site area of each zone. Bonus units may be re-allocated within the zones in the same manner set forth for base units in SDC 21.07.050R.
Errata Revisions | November 17, 2022 Effective | January 1, 2022
36 | Title 21: Sammamish Development Code
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