Plans for apartments, retail outlets and an exhibition space at the Marine Biological Station in Port Erin have been put forward.
Delgatie Ltd - who purchased the building and its lands in August last year - is seeking approval in principle for the development.
It would also include over 150 parking spaces at both ground and basement level.
The property development company was founded in 2017 operating in both the Isle of Man and UK markets.
Two Manxman crossings called off
New warning for coastal overtopping at high tide
Government wants to re-roof governor's home
EVF to roll out body cameras to all Island stores
Good news for Island's Vinted sellers!
Ferry sailings under threat this week
Mountain Road gritting gets underway
Civic Amenity Site issues statement after former manager admits fraud