The only option for that (other than putting a hub on site) would be to use cameras that support RTSP, and make the camera accessible over the internet so you can add it manually to your hub using the RTSP stream from an IP used to access the camera over the internet. (That IP will be the external IP of your construction site, and you'll need to set up a port forward to make it forward a port to the RTSP port of the camera.)
However, if you do this, be careful setting up the port forward to the camera on your firewall ... i.e. make sure that only the IP address of your home (i.e. the IP address that the hub will use to reach the camera over the internet) is allowed access to the camera -- don't open it to the whole internet or the camera could get hacked.