where can i get the rules on putting up a barn in my back yard ? since nobody knows maybe someone can help.

ACC request

You should have been provided a copy of the protective covenants when you purchased your home. In it you will find the dimensions that are allowed. Of course you are still required to have it approved prior to starting the work. You may need to contact the office at the rec area to get the ACC request forms. I would provide you the phone numbers but I have been requested by the President of the Board of Directors to NOT share any of that information.