Commission denies coastal setback variance for North Manasota Key seawall after public opposition
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Summary
The commission voted unanimously to deny a coastal setback variance request to allow a 584-foot vinyl seawall at properties on North Manasota Key, citing concerns raised in staff analysis and public testimony about adverse impacts to the beach and turtle nesting. The applicants argued rapid bluff erosion threatened slab-on-grade houses and that
The Sarasota County Commission on Aug. 27 voted unanimously to deny a coastal setback variance for three properties on North Manasota Key that sought permission to build a vinyl sheet-pile seawall seaward of the Gulf Beach setback line.
Staff presentation and public hearing: County environmental permitting staff corrected elements of the staff report during the hearing and summarized that the sites lie within a state-designated critically eroded beach section and that the proposed seawall would extend up to 75.1 feet seaward of the countys Gulf Beach setback line in places. The applicants and their coastal engineer, Christy Tigner, told the board surveys show rapid bluff erosion at the three properties, with recent measurements the applicants said showed 36 feet of bluff loss in the past two years. The applicants said slab-on-grade homes risk being undermined and argued a seawall is the permitted long-term stabilization method under state criteria in this circumstance.
Opposition and staff concerns: Several nearby residents, the Sarasota County environmental manager and public commenters told the board the proposed hardening will likely accelerate erosion on neighboring unarmored properties, would reduce beach width and impair sea turtle nesting. Staff noted that seawalls can disrupt natural sand transport, cause localized scour at return walls, and the neighboring seawall that was permitted and constructed previously appeared already to be contributing to sand loss. Staff also noted that alternatives such as sand fill, dune restoration or temporary measures may be available and that the applicants must demonstrate less-structural alternatives are infeasible before a variance can be granted.
Outcome: Commissioner Mark Smith moved to deny the variance; Commissioner Josh Knight seconded. The motion carried unanimously.
Why it matters: Commissioners pointed to the long-term public interest in preserving the beach and warned that piecemeal armoring can cause a domino effect that results in an armored shoreline and loss of public beach. The boards decision leaves the property owners able to pursue other nonstructural measures or to reapply with revised plans that better demonstrate state and county variance criteria are satisfied.
Administrative note: Staff said a denial resolution will be prepared and returned for the record.
