Fifteen members of the public have so far lodged objections to the Nelthorpe Arms pub in Brigg town centre being turned into three houses.
Applications seeking listed building consent and planning permission have been submitted to North Lincolnshire Council by Harriton Beracha Ltd.
No decisions have yet been made, with the closing date for submissions to the local authority not being until this Thursday (May 17).
Consulted on the applications, Brigg Town is supporting the proposed change of use.
However, a number of members of the public have submitted their objections to North Lincolnshire planners.
Lee Johnson, of Scawby, said "It has been a beer-house since approximately 1789 and as such should be protected and continued to be used as a public house."
He lamented the loss of a number of historic buildings in the town, including the Corn Exchange.
Graham Tock, of Brigg, said the Nelthorpe Arms, as part of the town's history, "must be maintained."
Derek Webster, of Water's Edge, told planners: "This pub has history and Brigg should be proud of its history and its traditional buildings, not altering them or modernising them."
Alan Holt, of Brigg, said: "We need the place to be kept as a licensed house. We are losing too many public houses as it is."
The council has been told by the applicants that the loss-making pub is no longer a going concern, so a "new use" is proposed for this grade two listed building.
The applicants feel their proposal "is sympathetic to the building."