Warren Farm - projected cost £30m
Stadium - possible cost £200m
But never fear the capital will be raised, as has been pointed out above, from outside the club, and as capital spending it wouldn't feature on our balance sheet in the same way as TV income, wages etc, i.e. would not count for FFP etc.
I have heard that the owners are busily buying/negotiating to buy lots of parcels of land in Old Oak Common. The development of the area overall will contain 8,000 residential units. Lets put a very conservative average cost for London of £0.5m on each of those. That means a potential £4bn in real estate, before you even look at retail, entertainment, offices. I believe our owners are looking to have a slice of this massive bounty, in addition to building a stadium/entertainment/conferencing complex owned by the club which will pay for itself, and contribute to an overall income for QPR of approaching £150m a year by 2020. Premiership TV money obviously still central.
Look at it like this, as a long term strategy, and it begins to make sense, and also shows how massive Saturday's win was. The owners will get their cash back (not directly from the club) multiple times if they pull this off. It's a huge plus that Fernandes very clearly loves the club as well.
So of course they can build the stadium and the training ground at the same time. In fact they have to.