Shi Jun Zhang, 53, had been standing on the driveway talking to two other workers when he was caught by the vehicle and dragged underneath it.
He had been working on the foundations of his new house and died at the scene.
Cundy declined to comment last night.
David Leong, a friend of the Zhang family, said the verdict had brought some closure.
Mr Zhang's family had since moved to Auckland.
"It has been hard for them to grieve,'' Mr Leong said.
English was not the family's first language but, through Mr Leong, Mr Zhang's widow expressed relief that someone had been held accountable.
Through Mr Leong, she said: "You need to be aware that the car might roll. Such things can happen.
"It cost a person's life to learn a lesson. Hopefully no one else will need to go through this.''
The Zhangs migrated to New Zealand from China to work on property development, including the property where Mr Zhang died.
Mrs Zhang indicated she would return to Tauranga to attend Cundy's sentencing in July.
Mr Leong said the death of his friend could at least serve as a warning to other motorists to take more care when parking vehicles.
"I think people need to be aware that sometimes such a thing can be prevented if we are more careful.
Because at the end of the day the whole thing of going through the [court process] and finding out what the problem was . . . things like this don't need to happen.''
Yesterday, the court was told there was no evidence of vehicle mechanical fault.
Cundy's lawyer Rachael Adams argued her client could not have foreseen the handbrake releasing for some "unexplained or inexplicable'' reason and his driving actions that day did not meet the legal threshold test required to satisfy a criminal conviction for carelessness.
"Mr Cundy had parked in the same way in the same place for some eight weeks without incident and otherwise he had a well-maintained vehicle with no mechanical issues,'' she said.
Judge Wolff disagreed.
"I am satisfied that no reasonable prudent driver would rely on a single mechanical brake as a safeguard to prevent rollback and I'm satisfied it was careless to do so.
"The advisory note in the Road Code is sound advice and I'm satisfied a reasonable, prudent driver should follow that advice.''
Cundy will be sentenced on July 6.