If your serious about stepping away, hire a good attorney with real estate and small business experience and structure a purchase contract and triple net lease agreement to your liking. The attorney will include the boilerplate stuff that is required by law along with any provisions which he or she believes that you need to protect your best interests. Besides meeting those criteria, there really are no bounds on how you can structure a lease agreement. Make it tough and strongly worded so if the buyer doesn't abide by the terms, you can take the carwash back and sell it to someone else. After all, as the other gentleman described, you would be holding land but basically selling the use of your goodwill, equipment and fixtures and inventory for the duration of the contract. Do whatever you can to minimize the risk of neglect. A strong, responsible buyer, which is who you should want to buy your wash, should not be put out by an honest but tough agreement.