Reserve Bank of Australia governor Glenn Stevens has suggested Australian dwelling construction could pick up soon - but he remains cautious about the prediction.In a speech last night to the Committee for Economic Development of Australia (CEDA) Stevens said dwelling construction had been "unusually weak" but said none of the explanations offered explained the weakness."At present, at least some of the pre‑conditions one might expect to be needed for higher construction seem to be coming into place," he said."Interest rates have declined, dwelling prices seem to have stopped falling, rental yields have risen, and the availability of tradespeople is assessed as having improved."We have, moreover, seen a rise in approvals to build. So there is some evidence of a turning point, albeit a belated one.