Tool · Flood & landslide
Is there a slope behind this building — and who has to maintain it?
Hong Kong has more than 60,000 registered man-made slopes, and many are privately owned. If the slope behind a block belongs to its lot, the owners pay to inspect and repair it. The map shows every registered slope, its height and who the government's register says must maintain it.
What the hazard layers show
Registered man-made slopes
61,475
Every slope and retaining wall in the register, with its number, height and angle.
Show on the mapWho maintains it
The register names the party responsible — a government department, or the owners of a private lot.
Show on the mapLandslip warning signs
2,749
Locations with posted warnings about landslide risk.
Show on the mapFlooding blackspots
The Drainage Services Department's list of places that flood, with the cause.
Show on the mapNearby scan
Flooding within 400 m and landslide warnings within 150 m of any building you tap.
Show on the map
A real example: On Fook Court (Block E), Tin Hau Temple Road, North Point
A hillside block above North Point. What the slope register says about the ground around it:
- Age
- 45 years
- Storeys
- 20
- Buildings Department records
- mandatory building inspection notice · mandatory window inspection notice
- Registered slopes within about 25 m
- 10
- Nearest
- 11SE-A/C 263 — about 5 m away, 17 m high
- Maintained by (register)
- IL 8430 & Ext — a private lot
45 of 229 buildings within 300 m also have Buildings Department orders on record.
- When the register names a private lot, the owners of that lot are responsible for maintaining the slope. Check whether it is the lot of the building you are buying into.
- Slope data from the government's register of man-made slopes (via CSDI). The Lands Department's SMRIS is the official place to confirm who is responsible for a slope.
What the hazard layers won't tell you
The slope's condition
The register lists slopes, not their current state. Inspection reports sit with the maintenance party.
Flooding inside a building
Blackspots are street-level. A basement car park's history is a question for management.
Upgrade works planned
Government slope upgrading programmes are announced by CEDD, not in this register.
Look behind the building, not only at it
Search the address, turn on slopes, tap the one behind the block.