I have some very long term tenants but there are a few units that seem to have a revolving door on them.

If your tenants for example one is a pizza place and there are 15 in the 2 mile radius than tough to succeed etc.Regardless if tenant leases are NNN mom and pop operators likely have any extra money above base rent and estimate regular cam payments.

If you are in a position to maintain your current payments on your revolving and installment payments with a goal to pay off in1-2 years I would keep the property as a rental as long as the property will cash flow.  

In addition I also charge them CAM fees.

The experts usually say to pay down revolving debt like credit cards first.Like Jon said, the less balance and the better balance to available credit ratio you have, the higher your score will get over time with good payment history.Make sure you keep some revolving accounts open instead of closing them if you get a new one (as long as you don't go over about 5, that's the general rule).

You can also negotiate CAM increases as well to make sure the owner of the building does not do massive increases during the life of the lease..

@Will Stewart and others, a friend of mine who owns a sizable portfolio out in Gardner/Leominster area said he’s worked Hanscom Federal Credit Union to do an SBA 7a Express Loan which is basically a 2-year revolving line that converts to a 5-year fixed after 2 years.

If there will be many of them coming and going, I create a one-page document saying they've reviewed the lease and accept it so I don't have a lease with 20 signatures on it.The big issue is determining how often they will be revolving tenants and how long each tenant will occupy the home.

Most of that revolved around spending more time with family and vacations. 

If you can't, not only cam your seller hammer you but your buyer can clean your clock too.These are not risk free transactions, your buyer or tenant can fail to pay too, if you operate on a shoestring, you're really at risk.