Any anyone that bought a house after 1986 in the Badgerys Area, knowing that since that date it was always going to be the site of Sydney's second airport, can't now have a bleat when the airport finally, belatedly, gets built there.
Even if the site were to be confirmed today, and work commenced tomorrow, the site wouldn't land it's first aircraft until 2020 at the earliest. That's 34 years of advance notice of the new neighbours moving in.
No sympathy I'm afraid.