PHOTO: DIANNE WALKER Dianne and Cliff Walker, one of 25 home owners who claim roadworks have cracked and devalued their homes.

Home owners along Auckland’s Southern Motorway are preparing to take action against the New Zealand Transport Agency for cracks and other damage to their homes.

Twenty-five home owners, mostly in Conifer Grove, are seeking compensation from the agency after years of vibrations caused by road widening work on the nearby highway.

Their lawyer, Adina Thorn, said the homes were long established and the problems had only arisen since the work began.

The suspicion was that vibrations through the soft soil had caused the foundations to move, resulting in the cracks, she said.