** Morningstar cuts fair value estimate for shares of property exchange PEXA GroupPXA.AX by 8% to A$18.50 per share
** Shares of co fell after the Independent Pricing and Regulatory Tribunal of New South Wales (Ipart), proposed reforms to regulate pricing for co based on a building block model
** Morningstar explains that a building-block model requires assessing an initial asset base on which the property exchange may earn a return
** Notes that a low initial asset base would lower deemed appropriate return and introduce possibility that prices could be lowered
** Morningstar assumes a 25% probability that prices will be reduced nationally for a 6% return for a capital base of A$750 million($518.78 million), which is the midpoint of the examples provided by Ipart
** PXA shares fell 21.8% last week, down 10% YTD
($1 = 1.4457 Australian dollars)
(Reporting by Nichiket Sunil in Bengaluru)
((Nichiket.Sunil@thomsonreuters.com))