Being realiste here, if you have above 100-200 bitcoins you can really buy a house with it, lower ammounts will require more years, meaning more halvings, bitcoin will keep raising till the mine ends, then we will see how bitcoin will stand alive with the change at the market.
Might need more tbh since even with 100 etc who has the balls to just cash out 100% of them all for a house if the price goes up into thousands etc. Housing is costly af where i am dont know about u guys, its a rip off.
It really depends of your overall situation. I want to buy a house, or rather I want to have one built for me, this year. I have saved for a few years, I have inherited some money, I have a stable job allowing me to take a big mortgage, interest rates are very low (and in France, you can get a 25 years mortgage at a fixed rate, so it's practically free money). 10% of my savings (10BTC) is in Bitcoin, so it isn't really part of the equation. In fact I will probably keep the BTC and buy the house without it.
If BTC goes to the moon, I might use those to get a bigger house, or dig a swimming pool, or retire and go live on a tropical island !