depends on where you live , here in lancaster pa you can have a brand new 6000 sqft home on a few acres for about 600,000 with about 6 to 10,000 a yr in taxes , so it does not take very much in some places.
the same home 2 hrs away in new jersey costs about 2 million with about 30,000 in taxes...
so house paid for a about 1 million in the bank here in lancaster and your rich without working!
you can easilly retire on 500,000 in the bank/stocks living off the interest and a 300,000 house paid for...