A month after the conservation commission ordered the removal of a Chilmark house perched on an eroding bluff, the commission Wednesday heard plans for the home’s removal: the guest house is slated to come down immediately, with the main house dismantled in phases depending on the rate of erosion. The 650-square-foot summer home on Stonewall Beach, owned by Natalie Conroy, stood eight feet from a cliff in late February. Ms. Conroy applied to move the house nine and a half feet back from the bluff, an application the commission denied because it would encroach on wetlands.

The Chilmark conservation commission voted this week that a house perched precariously at the edge of a cliff overlooking Stonewall Beach cannot be moved again, and instead must come down.

“We’re at the point where this house should be removed, not relocated,” commission chairman Pamela Goff said. “This [application] is just delaying the ultimate end.”

Chilmark town leaders agreed that the decision marks the first time in memory that a house will be demolished due to the threat of erosion.

Following Hurricane Sandy’s blow to the south-facing coastline of the Vineyard last month, the Chilmark conservation commission is now facing a slew of plans for beach protection, including a request to move two homes and a shed now perilously perched atop the cliff at Stonewall Beach.

The Chilmark Conservation Commission issued an emergency work certificate this week for two perilously-perched cottages on the cliffs of Stonewall Beach, fearing if they are not moved back from the edge they will fall into the ocean.

Natalie Conroy’s two small cottages on her property off State Road in Chilmark must be moved after tropical storm Irene stripped off 10 feet of cliff where the structures stand.