Toa Payoh is one of the easier maps to draw and one of the easier ones to overspend on. The town is small, so a circle around Toa Payoh Central swallows Bishan, Novena, Serangoon and Potong Pasir at once.
Those are separate residential markets with their own search habits, and some sit outside what your team serves. Density helps: blocks are close, many households live in older flats that need servicing, and a van parked in Braddell reaches Lorong 8 quickly.
Density also means plenty of competitors bid on the same job terms, and general searches for aircon or plumber attract price shoppers. Property firms answer to CEA rules, and trades to NEA, BCA and PUB as relevant.