Jas, I'm not sure I understand your issue. There are many Houston-area c-stores listed on the various websites like bizbuysell you can use to search for a business or you can always enlist the help of a broker. Most listings will include the real estate but often times these sellers will also be open to selling the business and leasing back the real estate to qualified buyers.

Web reference: http://broker.bizbuysell.com/DougBattsMurphyBusiness