sentences:  A major renovation by Westfield in 2000 cost $100 million and enlarged the mall to 29,700 m2, with an increase from two levels to five levels.In a 2008 rating of New Zealand shopping centres by a retail expert group, Westfield Glenfield received just two out of four stars, the lowest rating in the country (though not the lowest that would have been possible), based on the criteria of amount of shopping area, economic performance, amenity and appeal as well as future growth prospects.The reviewers considered that the centre was facing strong competition, including from its newer and larger sister centre Westfield Albany.