I was in on Sunday. Nice and quiet; not a drone in sight!
I would say that they are refurbishing the WCs.
The new house isn't a worry but RWY 20 has a real optical illusion as it is concave and drops off, steeply, to the South. i.e. it appears much shorter than it is. Its described in ERSA.
As M61 says - heaps of Qantas academy aircraft in the area - presumably all on the Toowoomba /West Wellcamp CTAF?