Here are some links that you may find helpful for filming in New York:
Location Managers Guild International
Mayors Office for Media
NYC Insurance Requirements
Do I Need A Permit?
New York State Film Office
New Jersey State Film Office
Westchester Film Office
Yonkers Film Office
Nassau County Film Office
Suffolk County Film Office
Rockland County Film Office
Jersey City Film Office
Connecticut Film Office
Hudson Valley Film Commission
Orange County Film Commission
ALSAM (Association of Location Scouts and Managers)
International Brotherhood of Teamsters Local 817
NY411
NYPG
FilmReady Services
Commercial Zone Map
AICP (Association of Independent Commercial Producers)
FAQ about EFX in NYC
How to get a Hydrant Permit
Hydrant Permit Form
Oversized Vehicle Permit
Truck Directions
DOT Parking Regulations
As The Crow Flies
Filming in a City Park
Filming in a Central Park
Filming on the Staten Island Ferry
Filming on Liberty Island
SAPO Event Permits
NYC Freelance Rules
Stages in NYC
Sunrise/Sunset
Sunpath
CAPS Timecards
CMS Signatory Services
Media Services Timecards
817 Motion Picture and Television Agreement (Old)