(ShareCast News) - Industrial Multi Property Trust (IMPT) reported an 8% lift in net asset value for the first half of the year, sending its share price upward.At 0829 BST shares in the property investment trust were up by 0.99% to 95.94p.IMPT said adjusted net asset value per share was up to 237p for the first half, from 220p at the end of December last year."This increase has been achieved through a combination of improved valuations, a property sale at a 48% premium to the most recent valuation, increased occupancy and reducing void costs," IMPT said.Adjusted loss per share was 7.9p from 7.7p the year before.The UK commercial property investor said occupancy levels were up to 88.4% compared with 86.5% at 31 December 2014.The firm's property portfolio value was up 2.2% on a like for like basis at £80.5m at the end of the period. IMPT had sold four buildings during the period, for £1.55m before sales costs.