Hi Twlewis,
Are you currently living in Hong Kong? I'm not sure where you are getting your numbers from, but I think they're way too high.
For example you can get mortgage rates as low at 4.6% currently. With the new income tax reduction income tax is around 13%, and since interest can be deducted, that brings your interest rate down to 87% * 4.6 = 4%, which is about on par with rental yields.
For gas and elec I pay around 200 all up per month, even in summer for a 2 bedroom apartment. Water is negligible, usually around $2 HKD per quarter
Maintanence I'd say is way below what you estimate. Labour is cheap in HK, as are materials, and unless you're renting to orangutangs, my guess is your place wont get too trashed

A paint and a few small repairs each time the tenant changes should be enough.
These are estimates for new appartment, for old ones I think maintanence could be considerably higher. For a new place, I reckon 500 per month would be more than enough.
Keeping LVR high is tricky in HK. In Oz it's pretty easy, just get a LoC attached to your property and revalue and draw down every few years to fund other investments (some people even draw down to support themselves ie. living off equity, or draw down to cover holding costs, although they tend to be pretty radical approaches).
HK seems to be a little more tricky, since the banks are a PITA. Drawing down up to 70% should be possible though.
For mortgage insurance have a look here
http://www.hkmc.com.hk/eng/pcrm/ourb...ip-annex4a.pdf
I think you'll need to pay this to the bank as part of the mortgage setup, ie. along with your downpayment. You only need this for LVR above 70%. It's really a mater of balancing higher entry costs vs. higher gearing based on your views on how rapidly the property will appreciate.
Personally I love gearing and would be willing to pay the 4% insurance to lend at 95% LVR, but the locals tend to be alot more risk averse. The property crash in 1997 may be something to do with that
Regarding home vs. mortgage, I don't really buy into the whole 'rent money is dead money' line. Either you pay rates, management fees, maintanence, interest (all lost) or you pay rent. Financial it works out pretty similar, so I tend to go with whatever is more convenient, although in HK you'd be better off living in your property, since u can deduct the interest payments.
In Australia it's the opposite, no deduction of interest can be done on your principle residence, but interest payments on investment properties can be deducted off both the rent and your salary. Basically means that interest costs get halved.
On the tax, I hear you loud and clear. Do you ever get the feeling that countries feel their citizens belong to them? I thought there was something (at least in the US constitution) that said all men are born free. Why then are we treated like slaves?
This is somewhat immoral, but my personal goal is to die without repaying my uni fees and without paying the equivalent in taxes. So far I'm on target
Indeed living in your own place cuts down the hassle. Similarly I rent to my dad in Oz which is alot less hassle then renting to strangers. But then I also get the hassle of chasing up my old man if rent isn't paid (that sucks!) and getting below market rent
People will tell you there are no 'capital gains taxes' in HK. But there is 'profit tax' of 15%. So if your are deamed making 'an adventure in trading' then they'll hit you up. Basically it's at the tax offices discrecion. You should be OK if you live in it the whole time, but every case I've seen on the internet where people went to court they got ruled against. It's basically one of those things were the tax department tries to determine your 'intention', if your 'intention' was to make money (I guess some people buy houses with the intention of losing money?), then they'll try and hit you up.
That's one reason I prefer shares. I was thinking lately shares are also more liquid in the event of divorce. As soon as you smell trouble liquidate the portfolio and off into your swiss bank account it goes
