When to put rental properties in an LLC ?

[Scott Bennett]

In NH I own 3 condos  , two multi families , 1 mobile home , and currently  own the mortgage  on a condo  I sold. The 3 condos  and one 3 family  are owned outright.  My question  is  should I ? Or how important  is it that I put my properties  in and llc ? If need be what does this cost and or change  ? 

Also , I find that the  banks are being a pain in the  but and require way too much information  now days ! Thanks