Same way you buy one! It’s awesome!

That is a very good question! To dp a down payment on your house I assume you need to pay through your bank. Receiving 1 bitcoin on your bank account would probably set of a range of red flags, alarms and freeze your account immediately.

Slowly

It's much easier to do now than before then bad part is they will tax you over 40% in Canada and transferring that much money into a fiat bank in Canada will get your bank account frozen. Even spending that much money is difficult. If it was easier I'd go on a spending spree.

Or buy in a different country

the topic is about selling Bitcoin not buying

Exactly, selling means trading for something else. Make the trade or the sell in a different country. I'm just putting it out there that one does not need to buy a home where they might be taxed so much.