Wentworth Falls runs right to the escarpment, and a large share of properties here sit on bush blocks or back directly onto national park. That is the defining factor for termite work in this village: there is abundant natural habitat for colonies immediately adjacent to houses, in stumps, fallen timber and standing deadwood.
Climate matters too. The upper-mid Mountains are cooler and considerably wetter than Sydney, with long damp periods and heavy winter moisture. Timber that stays damp, whether that is a subfloor, a deck substructure, a pergola post set in soil or a timber retaining wall, is far more attractive to termites than dry seasoned timber. Many homes here also use timber decks and stairs to deal with sloping blocks, which puts structural timber close to or in contact with the ground.
When we inspect in Wentworth Falls we give particular attention to the subfloor, the deck and stair footings, any timber in ground contact, and the perimeter where mulch, soil or leaf litter has built up against the wall. We would rather find it in a post or a deck bearer than in the house frame.