Another point to remember is how liquid are you?
For example, say your home is worth £300k and you want to hedge all of it.
But prices don't fall, instead they rise by 20% over the next 2 years. This means your short property trade will be offside by around £60,000 and that money (hard cash) has to be deposited with your broker. Not many can do that.
Here's another scenario.
You hedge your downside risk but then prices start creeping up and you get influenced by all the bullish property talk. So you take off your hedge and lose say £15,000 cash but your house has risen by around £15,000. But then property starts to slump.........
Net result is a £15,000 cash loss plus your property is now going down in value and you have no hedge.
See how complicated this can all get?
My advice. Forget about trying to hedge and realise your home is a place to live in. So what if it goes down, so what if it goes up. Got to take the rough with the smooth otherwise rent.