Transactions like this are the beginning of regulators getting interested in Bitcoin. If the entire transaction was done in Bitcoin instead of Canadian dollars, how could the government tax it? They could I suppose call it a barter and tax it under barter tax laws. In North Carolina property can be exchanged for "any valuable consideration" and a tax is due to the state according to the value of the consideration exchanged. Lot of interesting issues here.

But I agree with TorKlingberg that the fact that he didn't price it in Bitcoin is a little disappointing. Though I believe the value of the house would be a distressingly high percentage of total daily volume of Bitcoin exchanges.