A commercial property portfolio auction delivered the lowest clearance rate of the year, highlighting the gap between vendor expectations and what investors are willing to pay, even for blue-chip assets.

CBRE's final Premium Portfolio auction of the year was well attended and had multiple bidding on all properties, but just two out of seven – a Woolworths supermarket in Port Lincoln and a G8 Childcare Centre – sold under the hammer, returning a clearance rate of 28 per cent.