I'm not following. Postponing those taxes doesn't mean they don't need to get paid. I quickly googled it and saw "The deferment of property taxes is secured by a lien against the property which must eventually be repaid."
Which sounds like a recipe for... grandpa dies, grandma can't pay property taxes so defers it for 10 years. Grandma dies and whoever inherits the home needs to be pay a massive deferment (unaffordable?) or give up the home.
