IOM Post Office is looking to create a bigger space for the operations at its headquarters.
The organisation is planning to extend its parcel hall as part of its mail strategy to improve facilities and to handle increasing post amounts.
The proposals are subject to planning approvals and officials are on the lookout for experienced contractors who could carry out the work needed.
Interested parties are being invited to put forward expressions of interest to the government portal before the deadline at 5pm on Monday, August 12.
Fuel price hit may last into winter, says government
Further temporary speed limits on TT course
Western homes to be without water tomorrow
Co-Op ordered to hand over evidence in blind worker's tribunal
Who'll be getting meningitis vaccines?
New atlas shows dramatic fall in Island birth rate
Autocar lavishes praise on Island's roads
Super Unleaded hits almost 165p a litre