Toa Payoh is compact, mature and searched by neighbourhood. Locals rarely type the town name alone. They type a lorong, an MRT stop, or a landmark such as the HDB Hub or the bus interchange.
A page titled for Toa Payoh as a whole competes for the broadest and least valuable version of the search.
Next door, Bishan and Novena have their own town searches, so Google treats Bishan North and Braddell as separate places even though they are a short ride apart.
The flats are older, with many resale owners, tenants and renovators, and the jobs that follow them: aircon servicing, ageing pipes, pest work near hawker centres. Property firms follow CEA rules and trades hold NEA, BCA and PUB licences as relevant.