I have never seen brakes on a Hunter Compact that still had the drop axle
in place, probably because there are no mounting ears provided. If it has a newer, straight, axle
it may have had brakes added.
BUT as far as I know the limit for brakes in CA is still 1500 lbs and, unless you are piling in a lot of stuff, it should stay under that number.
BTW: I believe that you have to have two safety chains, one crossing under the another. Even if it's not required, you really should have them anyway.