The Australian Prudential Regulation Authority's call on banks late in 2014 to tighten their lending standards was always intended to be a temporary measure. Such measures are always under review and right now the regulator's focus is on commercial property lending.APRA chairman Wayne Byres said the measures had "served us well so far" but were always under review.In December 2014 APRA wrote to authorised deposit-taking institutions saying that investor loan growth "materially above a threshold of ten per cent" would be seen as "an important risk indicator" in considering the need for further action. It also recommended that lenders tighten their serviceability buffers.Speaking at an Actuaries Institute conference in Sydney yesterday, Byres said: "It was never intended to be permanent. We were trying to reinforce lending standards and take some heat out of the market."Byres said APRA did not have a view about house prices at the time. Its issue was with the quality of lending.He said APRA was "dialling up" the intensity of its focus on lending at the moment, with commercial property "front and centre" in its thinking. It is looking at ADI's commercial property loan data, which is more difficult to assess because it not as standard as mortgage lending."We are working through that," Byres said. He said it was natural to be looking at this part of the market at a point in the cycle when building approvals have been rising.Byres said it was important to remember that a stable and resilient banking system relied on more than capital. "Capital adequacy is a relative concept. Is capital adequate relative to risk?" he asked. "When we judge a bank's capital to be high or low, or something in the middle, we are making a judgement that takes into account a range of issues that impact on bank risk profiles. Funding and liquidity, asset quality, governance, risk management and risk culture all come into the equation in some way or another."