Multiple alarm hubs in one location

I have one building on my farm property that is about 200meters/yards away and not in reach with wireless sensors. The building is however connected to my internal network using a short-range radio-link and I would like an option to cover the entire property with one system. If I install a second alarm-hub on the same network will it require a separate subscription for monitoring? Is anything planned in terms of range-extender/repeaters that either operate on a bit longer distance, or would be able to bridge sensors across an IP-subnet?