UK property firm Unite Group said the estimated net asset value of its UNITE UK Student Accommodation Fund fell by 1.8% in the first quarter of 2008. The funds NAV stood at £1.002 on 31 March, down from GBP1.020 at end-2007.This valuation is the result of an independent valuation of the funds assets, which valued the funds assets at £829mln, which was a decline of 0.7% at gross asset value level for the quarter, the company said.