How much of your take home pay goes to rent or mortgage payments?

What percentage of your take-home (after tax) pay goes into paying either your rent or your mortgage? If you're happy to share the actual numbers, what are they?

Here there's a figure of 30 percent used to say if a person is in 'accomodation stress'.

ie, if your after-tax pay per pay cycle (fortnightly is mostly normal here unless you're in a salaried job) is $1000, and you pay more than $300 in rent or on your mortgage, you're venturing into 'accomodation stress'.