Hello Mahar, a rent back in my area is not market value rent but usually the buyers 'actual' costs; the buyers mortgage payment+insurance+property taxes, etc. If you have a substantial down payment and not a huge mortgage, the sellers could end up living there for a song. However, everything is negotiable. In this situation, I would recommend that my buyer close escrow per normal schedule but do a rent back agreement. A formal rental agreement signed by buyer and seller (after COE would be landlord and tenant). The dates of the tenancy, the monthly rent, a cleaning deposit and any other stipulations you would like to include can be outlined in the contract. On the flip side, what if they don't ever move out? Now you are a landlord and have to evict them through process of law. I would closely analyze why they can't move at close of escrow. Is there something on the other side that could fall apart and leave them houseless? Are they people with integrity who will abide by the contract and still move out even if they have to live with family or go rent elsewhere? Whatever you decide, MAKE SURE YOU DO IT IN WRITING.