I would just add something as well. I just grabbed a document from my colleague: supplementary estimates, Treasury Board of Canada, for the year 2007-2008. On page 229 of 246 are listed new major capital costs projects: Calgary, Harry Hays Building, fifth floor building repairs and upgrades, $6,347,000. Then it goes on with additional cost for federal accommodation and holdings for the Skyline Plaza. There are indeed significant additional costs, which I don't think are listed in that, given that this document came out subsequent to the original documentation.
On December 5th, 2007. See this statement in context.