Tisbury panel approves foundation work at 21 Old Oklahoma Road with plant‑protection conditions

Engineer Casey Decker presented plans to stabilize an existing shoreline dwelling at 21 Old Oklahoma Road by cribbing and installing poured concrete perimeter foundation walls to permit excavation beneath the structure. Decker said the work would not change the building footprint, is located outside mapped resource areas, and intends to preserve mature vegetation within approximately 10 feet of the house.

The commission imposed four special conditions before approval: the excavated area must be restored with materials equal to or more permeable than existing site conditions; all mature plantings within roughly 10 feet of the dwelling must be preserved; the applicant must notify the commission before installing any window wells; and an as‑built plan must be submitted upon completion. John Best moved to approve the Notice of Intent with those conditions; Caroline Little seconded and the motion carried unanimously.

The plan calls for poured concrete foundation walls with the potential use of concrete masonry block courses at the top where access may be constrained. The owner indicated that TC Pierce is the proposed contractor and that construction is anticipated to begin in the fall. The owner is also considering window wells for light and egress that were not included on the current plan.

The approval does not increase the existing building footprint and the commission recorded that the work is outside mapped resource areas; the special conditions are intended to protect permeability and vegetation that contribute to coastal bank stability and storm‑damage prevention. The commission required an as‑built submission so staff can verify compliance once work is complete.

The commission’s next scheduled meeting is July 7, 2026, at 4:00 p.m.