Part of the reason for a title company is not only to help facilitate the closing, but also to make sure everything is prepared properly, and (perhaps most importantly) to be a mediator who can handle the documentation and transfer of funds (making sure both parties do everything completely, and that you actually get paid). If there’s no title company involved with this closing, I would be sure your dad and the mortgage company get paid either before or at the same time your dad is signing his documents, to ensure that everything is completed, and you/he actually gets paid.
Demand a Title Insurance Policy. Title searches of the public records will also show liens or judgments filed against a buyer. The title company will likely ask for satisfaction of those encumbrances before it will insure the land contract on a title policy. Ask to see a copy of the preliminary title report (or commitment for title insurance) to determine if a search reveals anything about the buyer.
Some states have laws that treat a land contract similar to a trust deed, and those land contracts provide for a trustee, giving a trustee "power of sale" to initiate foreclosure proceedings in the event the Vendee defaults on the contract. Other states give buyers a longer period of redemption, similar to those under a mortgage. For these reasons, it is important to reduce the chances of default by pre-qualifying the Vendee.
A closing statement should be prepared to show an accounting of the debits and credits to each the buyer and to the seller as part of the land contract transaction. An attorney or a title agency can prepare a closing statement for the parties. The closing statement may also contain an amortization schedule showing the projected payments to be made from buyer to seller to fulfill the financial obligation of the land contract.
In order to determine the right buyer for your land, look at the highest and best use to determine where to start placing ads. If it is country land that is perfect for hunting, look for local outdoor forums and clubs to advertise your land. If it is a good home site, a land broker or traditional real estate agent may be best. You can also contact the neighbors, who may be interested in extending their property.