Builders including Metricon, GJ Gardner, Hickinbotham and Home Group – which make up almost one-third of housing starts of the 20 largest builders – are keeping consumers in the dark about their financial health as the industry grapples with soaring borrowing and material costs.

Parkview Constructions, Coral Homes, Campbell Property Group and Masterton also feature in the Housing Industry Association’s top ranking of home builders, and have also failed to lodge recent financial documents, analysis by The Australian Financial Review shows.