If the dollar collapses who's there to enforce your ownership of said property?
The dollar could simply enter into a semi-permanent state of 15-25% inflation. Permanent until the USD withers away. This my preferred outcome because I actually like this country.
The dollar could collapse to junk status seemingly "overnight". This is very unlikely, but appears to be the course of action preferred by the good folks who are over extending our military position. This will result in wide spread riots.
The end result is probably somewhere in between. Sometime in the future. You might object that Im crazy and that nothing will happen but consider the two guys running for president - one just threatened financial sanctions of China, the other sanctions for any country that doesn't trade with USD.
Hardly the actions of confident people
If you live far away and rely on third party managers, the matter is also trivial, but the outcome is opposite.
It doesn't mean the entire government will fail.
Look for example at the Lira, Ruble or Argentine Peso.
Maybe for your children's lifetime, if they are lucky. It took Britain nearly 100 years to deflate from its hegemon status. Argubly, with the size and natural advantages the US hold, it will take even longer for them to naturally fall from its top spot.
Nigerian Naira is down 75% in two years. How are property prices in Lagos in €£$?
Turkish Lira is down 80% in 4 years. How are property prices in Istanbul in €£$
shall I continue?
USD can absolutely have a 50%+ depreciation in next 5-10 years. That is completely possible. Will it lose reserve currency status? No absolutely not. There is no viable replacement. But when we measure in purchasing power or gold or other stable pricing reference it can happen and property prices will not fall in those terms.
Printing currency doesn’t strictly cause economic collapse in simply causes a loss in value and faith in the currency.