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Pursuant to PD ordinance Section 915.28, in order to obtain a PD special exception waiver not <br />previously granted, the applicants must obtain approval of a revised conceptual PD plan. <br />Planning and Zoning Commission Recommendation: <br />At its meeting of August 14, 2014, the Planning & Zoning Commission voted 5-0 to recommend <br />approval of the PD modification request. The Board is now to consider the PD modification request, <br />and is to approve, approve with conditions, or deny the request. <br />ANALYSIS: <br />To change the project's approved setback requirements, the approved conceptual PD plan must be <br />modified. Because no project layout or infrastructure design changes are involved in the subject <br />request, no project design revisions are needed. Consequently, no changes are proposed to the existing <br />subdivision layout or improvements. <br />This request is narrow and limited because the applicants want to use a home design that proposes <br />open porch support columns that are to be located a distance of 8' 11/4" from the rear property line. In <br />order to allow for that design on the applicants' lot, and to provide similar flexibility for all other <br />marina lots (Lots 21 — 28), the applicants are proposing an 8' rear yard setback on all marina lots for <br />open porch support columns, in lieu of the existing 10' PD setback requirement. The applicants have <br />coordinated with the Marsh Island Architectural Review Board (ARB) and the ARB has approved the <br />applicants' proposed construction plans and supports their PD modification request (attachment 4). <br />Under the currently approved PD plan, Marsh Island's rear yard setbacks vary based on lot location <br />(Lagoon Lots, Marina Lots and Interior Lots); however, no additional specificity is included for <br />different types of structures (i.e. screen enclosures, pool patios) within any rear yard setback. <br />Although the Marsh Island PD did not establish different setbacks for specific structures, many PDs <br />approved since 2000 do include structure -specific setbacks as now proposed. The applicants are <br />requesting to allow columns for open (non -walled) porches to be located closer to the rear property <br />line than other structures (8' vs. 10'). Additionally, the applicants' request specifies that columns <br />located closer than 10' to the rear lot line must be limited to the middle 50% of the rear home <br />elevation, in order to limit the effect of the reduced rear yard setback on view lines from any adjacent <br />marina lot. <br />The following table compares parameters of the Marsh Island site's original RM -4 district zoning, the <br />existing (approved) Marsh Island PD requirements, and the proposed PD plan setback modification: <br />WAIVERS <br />Description <br />RM -4 Criteria <br />Lots 1 — 20 <br />Parcel A <br />(Lagoon Lots) <br />Lots 21 — 28 <br />Parcel B <br />(Marina Lots) <br />Lots 29 — 32 <br />Parcel C <br />(Interior Lots) <br />Lot Size <br />10,000 sq. ft. <br />10,000 sq. ft. <br />7,700 sq. ft. <br />10,000 sq. ft. <br />Lot Width <br />80' <br />80' <br />70' <br />80' <br />Front Yard <br />Setback <br />25' <br />8/'25'** <br />8' <br />8' <br />F:\Community Development\CurDev\BCC\2014 BCC\MarshIslandSetbackMod(PD-14-07-07).docx 2 <br />