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Land Survey Authority

The Survey and Mapping Office of Lands Department supports the Land Survey Authority in administering the Land Survey Ordinance (Cap. 473). Pursuant to Section 3 of the Ordinance, the Director of Lands is the Land Survey Authority. The Director of Lands has delegated all his functions under the Ordinance to the Principal Government Land Surveyor of the Survey and Mapping Office with effect from 1 September 1995 ( G.N. 3505 refers).

The Land Survey Authority mainly engages in processing plans deposited by authorized land surveyors under section 30(4) of the Land Survey Ordinance, processing application for registration as an authorized land surveyor and establishment and maintenance of a register of authorized land surveyors. The register is available to any person for inspection free of charge at the Legislation Section of Lands Department during office hours. Alternatively, with consents of some of the authorized land surveyors, their names and contact details are posted on the following webpage for reference of the public: List of Private Practising ALSs (PDF format).

For other information relating to the administration of the Land Survey Ordinance, please visit the following webpages:

For enquiries, please contact the Legislation Section at:

Legislation Section
Survey and Mapping Office
Lands Department
22/F North Point Government Offices
333 Java Road, North Point
Hong Kong
Tel: 2231 3342, 2231 4027
Fax: 2783 8492
Email: slsleg@landsd.gov.hk