Bob Lund from SEPTA called me back today regarding my inquiry into the pricetag on the 69th St. Terminal bathrooms.

The $400,000 pricetag does not only include the two bathrooms presently under construction, but the two larger bathrooms as well. They will essentially be stripped down to nothingness, and new electrical and new HVAC will be installed before the new bathrooms go in. Also, PA law requires contractors to be hired individually for such projects, rather than a single contractor subcontracting out.

So there's the answer, and thanks again to Bob for getting back to me.