Thanks for your question. I think you'll enjoy Massachusetts.
The previous responses pretty much answer your question - assume it's a monthly fee. There are some, but not many, PUDs around that have homeowner association dues that could mislead you into thinking that they're condos. Those fees can be annual but if you're not sure stick with assuming it's monthly.
Let me know if you have any financing questions!
Eagle Nationwide Mortgage Co. Thomas.Stevens@ENMCdirect.com