The way to go is to use the state Heritage law to keep these airfields open. Do your homework. Contact your state heritage office, local Council without telling them why you want to know, local heritage societies, newspaper achives etc.
Research the history of the airfield looking for not just architectural links to the past but more importantly cultural links. What famous flyers or identities flew out of the airfield. Prepare a case for preservation of your airfield on historical grounds.
Seek an interim heritage order from your state hertiage office until you can prove the airfield is of historical sigbificance either local, state or federal.
Clive
RA-Aus pilot, aircraft owner and Consultant Town Planner