ESCG Building Data is the best way to manage your NYC Department of Buildings (DOB) and Housing and Preservation Development (HPD) data on-line. Navigating either agency's site is a chore and figuring out which entries are new or updated can be difficult. Subscribing to ESCG Building Data removes that burden. We check their site often and send out notices when things are added or changed. Never pay another late fine because you didn't know that the inspector was at your property and wrote a violation (that you didn't receive).