There has been some confusion in the past as to the phone number requirements on various construction signs and the use of 311. We hope that you will find the following useful.
Building Code Sect. 26-252 b - a sign is required listing the name, address and phone number of the permit holder and the permit expiration date.
Building Code Sect. 27-1009 (c) - a sign is required listing the name, address and phone number of the property owner and the general contractor.
Chapter 8 of Title 1 - Sect. 8-01 (d) (1) - a sign is required listing the name, address and phone number of the demolition contractor and the Department of Buildings complaint number - 311.
Chapter 26 of Title 1 - Sect. 26-01 (h) - these phone numbers are required in addition to those required by Sect 27-1009 for construction jobs above:
1 RCNY 27-04 - a sign is required stating the following: "TO ANONYMOUSLY REPORT UNSAFE CONDITIONS AT THIS WORK SITE CALL 311"
All other specifications regarding letter size, square footage of sign, location, etc. can be found in the appropriate sections of law.