as mentinoned above, the primary lien holder such as mortgage companies or owners won't let it happen so easily. however when tax lien or tax deed auction scheduled, very like neither lien holder or owner really cares about the property. the chances are that these properties are really junk.
to my experience, the most properties are vacant lands in nowhere. the remaining improved properties are really old, small,with significant damage. the renovation cost will leave no profit margin.
occasionally you may find a few acceptable properties. however these properties could be redeemed by the owner at the last minute or you have to bid up significantlly to win the bid.
overall speaking the chance of getting tax deed for good properties is like winning a lotto.
