Pembrokeshire County Council, through agent Asbri Planning, is seeking permission to demolish the former Hakin Infants School, Picton Road, Hakin, Milford Haven.
Works proposed also include the construction of a bat house and ecological enhancement area.
A supporting statement says: “The former school buildings are boarded up, whereas the gardens and play areas have become overgrown. This is one of three schools to close in the last decade within the local area, alongside Hubberston VC School and Hakin Junior School, which have already been demolished.
“An outline application for residential development will be submitted in order to confirm the development in principle in land use terms is acceptable.”
The application will be considered by county planners at a later date.