North Strathfield homeowner Umberto Galasso has been seeking redress for more than two years for major cracking to his house, which he blames on tunnelling for the $16.8 billion WestConnex motorway.

Last week he took matters into his own hands when he hired contractors to pump resin under the footings of his Carrington Street house to support them and close more than 40 cracks in walls. The largest crack is his house above the M4 East tunnels in Sydney's inner west at least two metres long.

"I am worried my house is going to collapse," he said.

North Strathfield homeowner Umberto Galasso is still waiting for a review of his damages claim. Credit:Dominic Lorrimer

He is among more than two dozen property owners who are waiting for an independent government panel to review their claims for compensation, after they were knocked back more than a year ago by the joint venture contractor CPB Samsung John Holland, which built the M4 East tunnels.