By Craig MacKenzie, executive general manager, Banking & Finance at CoreLogic Asia RP DataThe extent of "mortgagee in possession" by lenders, once a sore spot for financiers and the media, may be pretty modest at present.Valuation activity on CoreLogic RPData platforms remains modest, at around 300 per month, which is roughly 0.2 per cent of all requests for valuations by lenders on the firm's proprietary systems.However, as the infographic below demonstrates, several parts of the country are experiencing significant "mortgage stress", in the most literal sense. In Western Australia this is concentrated in the De Grey and Fortescue postcodes, at Mackay in Queensland and at Whyalla in South Australia, all of which are experiencing MIP activity materially in excess of the national average.Unsurprisingly, the resources and manufacturing related downturns are impacting on local property markets.Market participants are becoming more sophisticated and granular about identifying and attempting to predict their own 'hotspots', realising that micro geographic risk is both real and impactful.  Further, lenders and brokers are also more adept at identifying geographic areas of opportunity, being those market segments where they may be under represented in terms of their natural market share, have resources able to be deployed and see no risk impediments. If we were to rely solely on national, state or even capital city averages, these issues would largely remain camouflaged.