Most office bldgs.(and even some fancy residential bldgs.) in New York City;
do not allow any kind of bike inside. Especially ones like mine that has a
covered and shared(with the bldg. across the st.) bike rack by the entrance.
It gets full fast, especially on nice days like today. Most of the time I park my
bike in the locker room anyhow:

Brompton parked in the lockerroom by 1nterceptor, on Flickr