NJ Building Code - Is third bedroom legal bedroom??

[Shefali R.]

HI - I am buying a townhouse unit and trying to assess whether the third bedroom is a legal bedroom or not. The reason I am curious (I had assumed it was a third bedroom) is because there is an adjacent townhouse is being marketed as 2 beds and 3rd room as bonus room. Would any of you know: 

1. What is best way to find out if third room is legal (per NJ building code) - I called the town and they said they dont track this 

2. What is the NJ building code for a bedroom for a unit built in the 1990s - is there a simplified list available somewhere or some building department I should call

3. Can i market (for renting it out) as a 3 bedroom unit - it is spacious, has an attached bath and looks and feels like a respectable bedroom. 

Thanks!

Shefali