Extra Lots

I purchused a house in Oct for my personal living.. But when I got the taxes this year I found out that the house was on a lot and that I had two more lots on its on taxes... My question would it be a good investment to buy a double wide trailer and move it onto the other lot in order to obtain extra income.... How much should I plan on spending on running water and sewer lines? And is there any drawbacks to the plan Justin