In most jurisdictions, it is customary for the foreclosing lender to obtain a title search of the real property and to notify all other persons who may have liens on the property, whether by judgment, by contract, or by statute or other law, so that they may appear and assert their interest in the foreclosure litigation. This is accomplished through the filing of a lis pendens as part of the lawsuit and recordation of it in order to provide public notice of the pendency of the foreclosure action. In all U.S. jurisdictions, a lender who conducts a foreclosure sale of real property that has a federal tax lien must give 25 days notice of the sale to the Internal Revenue Service. Failure to give notice results in the lien remaining attached to the real property after the sale. Therefore, it is imperative the lender search local federal tax liens, so that if parties to the foreclosure have a federal tax lien filed against them, the proper notice to the IRS is given. A detailed explanation by the IRS of the federal tax lien process can be found.
Just remember, you will need to get the seller to agree on not only the rent to own agreement, but the terms of the agreement. i. e., length of the agreement, usually, one to two years; the percentage of the rent which gets applied to the sales price or closing costs, etc. If you get lucky, the seller may also be interested in doing Seller Financing with you. Just be sure to have a lawyer review any agreement before you sign it. A little legal cost upfront could save you thousands of dollars down the road.