So, it's best to go to your borough hall and discuss whether or not you can legally rent it out. Then, you will need to at least pass a fire certification for a c/o. Another legal hurdle for you.
Finally, if you are considering becoming a landlord in NJ, you should get yourself a copy of the NJ landlord/tenant handbook. If you would like a copy sent to your email, just contact me via trulia or my website below.
You can call Readington Twp, they can help.