A public hearing on a major expansion plan for the Stop & Shop store on the Vineyard Haven waterfront has been postponed, the Martha’s Vineyard Commission said this week.

The hearing, the first formal public review of the expansion plan, was set for June 6.

MVC development of regional impact (DRI) coordinator Paul Foley said this week that he was notified by the attorney for Stop & Shop that changes were being made to the plans, but that the applicant would not be ready in time for June 6.

Mr. Foley said the commission staff had not seen the changes yet.

The project, which would double the size of the existing grocery store on Water street, is under review by the commission as a DRI.

The property sits at the gateway to town across from the Steamship Authority terminal, just off the busy Five Corners intersection.

The plan calls for building a two-story building with a parking garage on the first level and the main store on the second level.

A number of issues already have cropped up with the plan, chief among them traffic congestion and historic preservation of an old house that is owned by the grocery store chain and sits on Cromwell Lane. The house was slated for demolition but a historical analysis showed that it was one of a handful of Tisbury buildings predating an 1883 fire that destroyed much of Main street. The Massachusetts Historical Commission has determined the home was eligible for listing in the National Register of Historic Places. The commission is in contact with state archeology officials about the site surrounding the house, which is possibly rare and significant, Mr. Foley said.

The commission also had asked for more information on a traffic study conducted by the applicant.

A date for the rescheduled public hearing has not been set yet.