The unfinished Wave Lengths Hair Salon building on Upper Main street Edgartown will return to the Martha’s Vineyard Commission for review, in light of unapproved changes to the building.

The commission first approved the project as a development of regional impact (DRI) in 2010, with modifications in 2011 and 2014.

Commissioners voted 10-3 last week to require a new public hearing for changes, which among other things exceed a height restriction for the commercial district on Upper Main street and stray from previous DRI approvals.

Plans for the three-story building call for commercial space on the first floor, and offices and apartments above.

Last spring the town planning board issued a cease and desist order shortly after construction began, later determining that the project was out of compliance with the original special permit.

The MVC will review a new special permit application that includes the changes already in place, along with a request to exceed the building height restriction.

“I think it’s vitally important that we enforce our decisions,” commissioner Fred Hancock said last Thursday. “When someone builds something that is clearly different from plans that are approved, I think there have to be consequences.” He said the commission and planning board together “might hold a bigger club.”

Changes to the building from the original plan include reshuffling features such as windows and a second-floor balcony, larger dormers on the third floor, and the top of an elevator shaft designed to look like a widow’s walk.

A list of 13 requests by the planning board in September aimed to mitigate the changes, although Wave Lengths owner Jayne Leaf has not agreed to reduce the size of the dormer over the front entrance.

Commissioners noted the extensive review process and enforcement powers related to special permits in Edgartown, as it debated whether to require a new hearing.

“We can give a larger forum for people to express their opinion,” commission chairman Jim Vercruysse said, adding that he did not believe the planning board would have as wide an audience.

Commissioner Clarence A. (Trip) Barnes 3rd said he believed the modifications had been unintentional, resulting from “a comedy of errors,” and he questioned the need for MVC review. “I can’t imagine that this is going to have a lot of Island appeal,” he said.

But commissioner Christina Brown, who is from Edgartown, said many people have wondered why the project was not built as planned, and she supported the idea of a new hearing. “I think it could clear the air,” she said.

A hearing date will be scheduled.