Coastal: another tenth of the area's land sits below the safety line (3 m above mean sea level plus projected sea-level rise). Heat: 30 or more days a year at or above 35°C. Flash-flood downpours: days with 50 mm or more of rain across Singapore reach 1.5 times their 1995–2014 level; one date for every area, since the rain model can't tell neighbouring areas apart. For local flooding, see PUB's list below. Mortgage and lease are counted from today.
If you own in Changi
The island-wide downpour date falls after a 30-year mortgage and inside a 99-year lease.
2026TodayAbout 3% of the land is below the safety line.
205630-year mortgage endsIf taken out today.
2090Flash-flood downpours · 64 yearsIsland-wide, days with 50 mm or more of rain reach 1.5 times their 1995–2014 level.
2096Coastal date · 70 yearsAnother tenth of the land sits below the safety line. It will depend on coastal protection, much of which is still being studied or planned.
2100HeatThis date is not reached by here, which is as far as that data goes.
212599-year lease endsIf it started today. Count from your own start date.
What to raise with your managing agent or town council
What is the ground level of our block, in metres above mean sea level?
How high is the basement carpark entrance above the road?
When is coastal protection planned for this stretch of coast?
Is our street one of the 1 flood-prone area or hotspot PUB lists in Changi?
If you are buying in Changi
6 questions to take to a viewing.
Sea level: inside a 99-year lease
In about 70 years (2096), another tenth of the land sits below the safety line.
What is the ground level of this block, in metres above mean sea level?
Is there a basement carpark or basement unit, and how high is its entrance above the road?
When is coastal protection planned for this stretch of coast, and has PUB's study for it been completed?
Flash floods: inside a 99-year lease
PUB lists 1 flood-prone area or hotspot in Changi. Island-wide, days with 50 mm or more of rain go from 6.6 to 8.7 a year by 2100, reaching 1.5 times their 1995–2014 level by 2090.
PUB lists 1 flood-prone area or hotspot in Changi. Is this street one of them, and has its drainage been upgraded?
Has the carpark or ground floor ponded in heavy rain before?
Heat: not before 2100
Days at or above 35°C go from 1 to 6 a year by 2100, staying under 30 a year.
Which way does the unit face, and how much afternoon sun does it take?
The numbers
Today
2050
2100
Land below the safety line
3%
7%
14%
Days at or above 35°C a year
1
1
6
Days with 50 mm or more of rain a year, island-wide
6.6
7.6
8.7
At today's pace of emissions (SSP2-4.5). "Today" is modelled, not measured. Changi covers 41.5 km² with a median ground height of 5.1 m.
NEA's Changi Meteorological Station station recorded 0.7 days a year at or above 35°C in 2014 to 2024 (11 full years). The model gives 0.4 for the same years, as an average over the whole area.
PUB flood-prone areas and hotspots in Changi
Mindef's Changi Camp at junction of Changi Village Road and Farnborough Road (flood-prone area)
Hotter than most of 55 areas by day; cooler than most at night. Satellite readings of the ground surface, not the air: Landsat by day (2016–2025), MODIS at night, ESA WorldCover for trees. They describe today, not a forecast.
An independent project, not produced or endorsed by CCRS, NEA, PUB, URA or any government agency. Low land in Singapore is protected today by seawalls, tidal gates and drains; these dates show when more of it will depend on that protection. Prompts, not property, insurance or investment advice.