"We changed from Darroch, who performed the valuation in June 2011, to CBRE who concluded the current valuation," he said.
"As announced to the market, CBRE held a different view on metrics like discount rates and future property price growth - a more conservative view - resulting in a writedown," he said.
Revenue fell from last year's $65.1 million to $64.1 million but net operating cash flow rose from $23 million to $31 million, exceeding company guidance of $26.5 million.
Resales rose from $267 million to $294 million, sales rose from $29 million to $36 million and occupancy climbed from 91 per cent to 93 per cent.
Craig Tyson, OnePath equity investment manager, said the result was a little better than expected, particularly the sale of more units in Takapuna village The Poynton on Auckland's North Shore.
Metlifecare merged with Vision Senior Living and Private Life Care but Tyson noted the financial results did not include these two as the deal was done after the balance date.
Metlifecare issued an outlook, saying it expected to extract synergies and efficiencies as Vision and Private were integrated.
Shares closed up 6c yesterday at $2.61.