Geylang is compact and dense, which makes Meta reach cheap to buy and easy to waste.
A shophouse landlord near a lorong, a family in an Aljunied HDB flat and an office manager at Paya Lebar Quarter all scroll the same feeds, but they respond to entirely different offers.
Language matters too: many households read English, Chinese, Malay or Tamil content, so ads should be written for the audience you can serve rather than translated by default. Festive seasons such as Chinese New Year and Hari Raya lift interest in home cleaning.
PropertyGuru and 99.co are where buyers shop for listings, so Meta suits owner and landlord offers. Agents work under CEA and trades under NEA, BCA or PUB as relevant. Spend and reports are in S$.