I’ve only done an appraisal on one of them which I added two bedrooms to.

•Continue tracking expenses and maintaining organized accounts.4.Grow Deal Flow:•Use a small portion of your credit for marketing campaigns (direct mail, Facebook ads, etc.) to source deals consistently.

I'm getting more and more FB ads in my area for mobile homes for sale. 

Not as good as a separate metering, but its less cost and seems fair to me with little added effort for billing.

Adding a lead filter may reduce/eliminate lead content, but they are still going to replace the pipe.

I made the layout more user friendly, added a whole wall of closets in the main bedroom, totally gutted kitchen and bath.

For the refinancing question, if you are adding square footage, adding a bathroom, or adding a full room etc.

For the most Service has been responsive, they're adding more functionality, though wish I could track maintenance/repair requests and service fees for rent, but the cash management is what's keeping me here for now.

A cash purchase, added to my portfolio, reduces my levergage ratio on my real estate portfolio, but does not bring it to zero of course as I am not paying off existing low rate mortgages on rentals. 

At the current price, adding the additional lots would make them about $30,000 per lot, depending on the price of the additional utilities that need to be added.