1. Sell to an investor. If you have a good tenant in place, it is more attractive to someone who is buying income property.
2. Sell to the tenant. If your tenant doesn't want to move, they may be able to buy the house. There are several programs for first time buyers to help them get into a home of their own.
3. Offer the tenants a buy-out. If the tenants don't want to stay and the new owner wants to occupy the property, you can offer the tenants something to move, such as cash, a month's free rent, etc. The compensation is negotiable between you and the tenants.