From APC:
CATHAY PACIFIC:
Housing allowance for HKG-based pilots only
This allowance may go to property purchased or rented in Hong Kong
2 types of allowances: (a) the cash housing allowance which is $14,000, $18,000 or 24,000 HKD (dependent on position and years of service, or the mortgage allowance, which is variable/fixed, currently at $5,800/mo.
Looks like $1800 - $3100 american, depending on seniority.
They do pay for 70-90% of private schooling though.
And don't forget, their pay tops out at about $220k american a year for senior captains, with no A fund.