ROCKLAND, Maine — Survey maps depicting the boundary line between Rockland and Thomaston indicate a discrepancy that has not been resolved for more than 150 years, according to a Thomaston official.

Thomaston Assessors Agent David Martucci said that some land and one home that is located in Rockland may actually be in Thomaston.

Martucci said he is not certain what should be done at this point but he wants to consult with Rockland’s assessor to try to resolve the apparent discrepancy.

The problem, according to Martucci, originated when Rockland separated from Thomaston in 1848. A boundary was approved in 1848, but a year later, the Maine Legislature approved a change at the request of a farmer whose property was divided between the two communities.

At issue is a wedge-shaped piece of land that is about 260 feet at its widest part and about 850 feet long, according to a map provided by Martucci. The land, considered part of Rockland, is located on the south side of Route 1 at the town line near the entrance to the Pleasant Gardens neighborhood of Rockland.

Martucci said he stumbled upon the discrepancy a couple months ago when he was researching a deed for properties that had gone into foreclosure. His research uncovered a difference between what that deed referenced as the boundary line and what has long been considered the boundary.

“Of course, I am something of an amateur, and none of this should be taken as any kind of claim by Thomaston of any territory now considered to be a part of Rockland. At some point in time I hope Thomaston and Rockland will get this line surveyed properly and come to agreement exactly where the boundaries are,” Martucci said.

He said a similar circumstance occurred between Thomaston and Cushing. Both towns commissioned a survey in 2010 which determined what the boundary line was and it was approved by the Maine Legislature.

Dennis Reed, Rockland assessor, said he had not been aware of the issue until he was asked about it by the Bangor Daily News.

“I’ll let [Martucci] do the research,” Reed said. “This has been the boundary for a long time.”

One property that is now considered part of Rockland would be split nearly evenly between the two communities, under the boundary line described in the deed reviewed by Martucci. The house would be on the line while the boundary would go down the middle of the garage.

The homeowner on Merry Street was not immediately available for comment Tuesday.