The Martha’s Vineyard Commission got its first look at the Edgartown National Bank’s ambitious plans to demolish the Oyster Bar, an Oak Bluffs restaurant, and build a three-story building in its place. On Monday, building plans presented to commissioners included a bank branch, two commercial units and four two-story townhouse condominiums at the Circuit avenue site of the former restaurant.

Citing an opinion from legal counsel, the chairman of the Martha’s Vineyard Commission Thursday night blocked a move by one of his colleagues to revisit the roundabout decision.