Dated values
BCA minimum pre-construction survey zones
BCA minimum pre-construction survey zones
Record details
- Value
- Minimum zone is 15 m for landed development; for non-landed development with basement or underground space it is 30 m or 3H for good soils, 60 m or 6H for soft soils without fluvial sand/peat/peaty clay, and 90 m or 9H for soft soils with fluvial sand/peat/peaty clay; the larger paired value applies and H is maximum excavation depth including localised pits
- Unit
- minimum survey zone and calculation rule
- Value type
- observation
- Population
- Building works involving demolition, piling, foundation, tunnelling or site formation in Singapore
- Denominator
- BCA Guidelines on Preconstruction Survey
- Reference period
- BCA guideline accessed 2 September 2026; current page last updated 26 January 2026
- Retrieved
- 2026-09-02
- Geography
- sg.geo.country.singapore
- Notes
- Landed developments also have neighbour-notification and communication-plan requirements; survey zones and communication duties do not replace permits, design, impact assessment or monitoring.
Dates describe this record’s own period and applicability. A verification date does not mean a rule is currently in force.
Sources
Collection as of 2026-10-07 · An expanding collection. Published counts show available knowledge, not complete coverage of Singapore.