Laverton was an airfield attached to a military base. The base is still there, but the airfield has closed, and since been replace by new housing developments.
This mod attempts to re-create the airfield, however to do that I had to bulldoze some houses (I hope they don't mind), and build over the roads. And unfortunately MSFS currently provides no way (that I've been able to find) to exclude road traffic. So there's cars and vans driving all over the arfield, including the runways. But that's OK because it doesn't detect collisions with road traffic, so you can just take off through it all.
If anyone knows a way to remove road traffic (you can exclude pretty much everything else), please let me know.