Singapore legislation
Regulation 5
of Boundaries and Survey Maps (Conduct of Cadastral Surveys) Rules 2005
Regulation 5
Existing survey data to be obtained
Subregulation 1
A registered surveyor or a representative authorised by the registered surveyor must, before commencing a cadastral survey, obtain existing survey data relating to the survey he or she is to carry out, by —
consulting the records of the Authority or, if he or she is so directed by the Authority, the records of any other registered surveyor or other relevant authorities; and
obtaining from the Chief Surveyor the lot numbers to be used in connection with the survey he or she is to carry out.
Subregulation 2
A registered surveyor or his or her representative must not —
use any lot numbers for the survey he or she is to carry out other than those obtained from the Chief Surveyor, unless he or she has obtained prior approval from the Chief Surveyor; or
use or quote any lot number in any instrument or caveat to be lodged with the Authority, unless the lot number or the relevant assurance plan, certified plan or strata certified plan from which the lot number is obtained has been approved by the Chief Surveyor.