The Queensland Building and Construction Commission has issued a state-wide alert warning homeowners of audit price gouging on cladding audits following the Grenfell London tower fire in 2017.

Industry experts and authorities said tradies have been increasing quotes up to 160 per cent to check if Gold Coast homes have the same external materials as the Grenfell tower.

The owners of over 5000 buildings in Queensland have been ordered to undergo an independent audit into cladding as a part of the Commission’s Safer Buildings Combustible Cladding Checklist.