Electrical wiring testing - SP Services/PUB test

Electrical wiring testing - SP Services/PUB test

Seems like it is necessary from HDB website

http://www.hdb.gov.sg/fi10/fi10205p.nsf/WP...ks?OpenDocument

http://www.hdb.gov.sg/fi10/fi10205p.nsf/WP...ns?OpenDocument Pt 4.3

But strangely, do not recall we doing it when renovating our previous place (resale) and recently when my bro sold the place.