The following buildings will be demolished when the Civic takes over the Farm.

Natural Resources Canada properties.

Geophysical Laboratory.

Machine Shop.

Observatory House.

Seismology Survey Building.

Dominion Astrophysical Observatory.(Wikipedia)

Photo Equatorial Building

South Azimuth Building(Photo from Canada's Historic Places.)

"On this site we have at least 24 buildings...Extensive demolition and/or relocation of buildings is required to allow for the new build to proceed." (Google:"site selection review and report." April 2016, Greenspace Alliance of Canada's Capital, page 57/59.)

The Civic Hospital wants more than 60 acres of land so they can expand. I predict that the National Capital Commission will give the corporation land that is directly across the street from the current hospital. Of course the Neatby Building at 960 Carling Avenue and the CFIA Lab will have to be bulldozed:
5.5.3 Site Selection Criteria
5.) Future expansion: Flexibility for future expansion over and above what is currently planned, within 60 acres.(google:"site selection review and report"-Greenspace Alliance of Canada's Capital, April 2016, page 22/75.)
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 Agriculture and Agri-Food Canada properties.

Canadian Food Inspection Agency, Carling Laboratory.(Photo from Canada's Historic Places.)

K.W. Neatby Building, 960 Carling Avenue, Ottawa.(Photo from CanColl)

Tropical Greenhouse.

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UNESCO can save the Central Experimental Farm buildings and landscape.
"A World Heritage Site is a landmark or area chosen by the United Nations Educational, Scientific and Cultural Organisation (UNESCO) as having cultural, historical, scientific or other form of significance, and is legally protected by international treaties."(Wikipedia definition.)