Not sure what data center building rates are near you - but that type of building and footprint is about ideal for a smaller sized unit.
Exterior perimeter fencing, with secure gates entry. External Camera coverage, and secure building access control.
Stand off from the street and parking for POMV. As well could be a fairly non descript building should the CAF want to keep a lower profile in some areas.
One could have multiple floors, as well as oversized roller doors to facilitate indoor vehicle storage (mind you I believe in PRes Armored Vehicles being at a central regional training facility). But LUVW, ISV, MSV type vehicles should be able to be stored locally.
Sub unit QM facilities should have access control, and there are some good ways to be able to lockup equipment (STANO/VAS, COMMS, Wpns’s and other controlled items that do not take a lot of floor space.
The key is to determine what size of unit one wants to house in the facility, and also how to scale the setup, and what level of modularity is desired/required.
@ytz had posted some concepts in another thread. I think his concept has an exceptional amount of merit.
I also believe that this sort of expenditure is an easy no brainer for the current government.