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Singapore Land Authority

Property boundaries

Read all about boundary survey, its importance and how it is conducted.

Last updated 4 September 2025

Allocation of Lot Numbers

Find out how and when Lot numbers are allocated.

Conducting a Cadastral Survey (For Registered Surveyors)

Find out what you need to do to conduct a cadastral survey as a Registered Surveyor

Conducting a property boundary survey (For property owners)

Find out what you need to do as a homeowner to carry out a property boundary survey.

Survey Maps and Plans

SLA maintains a record of Certified Plan (CP), Strata Certified Plan (CPST), Registrar of Title Plans (RT) and Cadastral maps in electronic format.

Survey Reference System

In 2004, SLA introduced the Co-ordinated Cadastre system to replace the old land survey system. The new system defines property boundaries by co-ordinates, rather than bearings and distances.