Herbert - there are 2 types of "home insurance"
1) Fire insurance
In a nutshell, this insurance covers your apartment itself - the four walls and ceiling and floor, and anything built in and fixed to it. Covers damage to it, mainly via "fire and water", the usual causes of damage to a building.
2) Home contents insurance
Anything else, including furniture, appliances, your belongings, are covered under this. In a nutshell, this is everything "movable" inside your apartment.
Sometimes you may already have Personal insurance which could have duplicate coverage, so check.
It depends on how much coverage you are looking at, and the address that needs coverage (because it depends on the location, the age of the building, etc.)
For 1), I arranged it via an associated insurer with DBS Bank, becos my mortgage is with them and so I get a discount. I am paying about HKD2500 for 2 years (usually it is HKD2500 for 1 year) for a coverage of HD2.2m.
For 2) I use Hang Seng bank myself - admittedly I did not quote with many companies as I prefer buying it via a bank than an agent, and within the major banks this is cheapest. My coverage amount is HKD1m, and I am paying HKd500 a year.