The WEW (executor of the NHG) has determined that from 1 January 2010 a valuation report for the financing of an NHG mortgage may only be accepted if it has been 'validated' by one of the institutes recognized by the WEW. In this context, validation means checking whether the valuer and the valuation reports meet the strict quality requirements as prescribed by the WEW.
Almost all lenders now require a valuation report validated by the NWWI, even for non-NHG financing.