A "subject to" sale is one of many creative ways of structuring a home sale. You need to understand all aspects of the deal before you proceed and it depends on your situation as to whether or not it makes sense for you. You should have your attorney review any contract to make sure it is equitable.
If you are willing to consider a "subject to" sale, have you considered a rent-to-own sale? I think this will provide you more control over your property, is probably a more common scenario, and provides the same end result (the sale of your property). But you have to be willing to be a landlord or have a qualified management company handle the property for you. Again, I recommend you have your attorney review any rent-to-own contract to make sure you have all of the bases covered.
"Subject to" and rent-to-own scenarios are becoming more common in today's market because buyers are finding it more difficult to qualify for financing. Lenders have increased the requirements for loans and some buyers have dings on their credit that prevent them from qualifying. With "subject to" and rent-to-own purchase scenarios, the buyer does not have to qualify immediately for financing and has time to repair their credit prior to having to qualify for a loan. When you find a motivated buyer, these type of sales lead to a win-win deal for all involved.
Have a great day! Vince