One of the membership benefits with the GBCA is access to the Pennsylvania One Call System. If your company uses this system, you do NOT have to pay for the invoice that they send to you.

GBCA offers this service through the General Contractors Association of PA (GCAP). GBCA members are automatically members of GCAP.


GBCA members that use the Pennsylvania One Call System can follow these four simple steps:

  • Use PA One Call system and receive an invoice for the service.
    Click here to see a sample of an invoice.
  • Scan and email the invoice to GBCA at
  • GBCA will verify your membership and will send the invoice to PA One Call System.
  • Your PA One Call System account will be credited (i.e. you will not need to pay!).



About Pennsylvania One Call System

The Pennsylvania One Call System aims to prevent damage to underground facilities. To promote safety, they provide an efficient and effective communications network among project owners, designers, excavators, and facility owners.