Waterproofing Cost Estimator
A range for your job in seconds, built only from published Singapore figures. Every number shows its source.
Your estimate
S$1,600 to S$4,000
Ranges: toilet package and hacking from 2026 contractor guides (Triton, PRDT, Hock Star); spalling from PropertyGuru (2017). Tiles quoted separately.
Get an exact quote
The estimate is a range. A specialist confirms the price after inspecting.
Request received.
A specialist will contact you on the number you gave. If water is near electrics, switch off that circuit at the distribution board and keep clear until then.
About the estimator
Where do these prices come from?
From published 2026 Singapore contractor price guides for toilet waterproofing and hacking, and a 2017 PropertyGuru report for spalling repairs. Each figure links to its source on this page.
Why does the roof option not give a number?
There is no reliable published Singapore per-square-metre rate for landed roofs; the surface condition drives the price, so roofs are quoted after inspection.
Is GST included?
Tick the GST box to add 9%. Many quotes exclude it, which is a common surprise.