"It appears that recent road rehabilitation works have created an area vulnerable to pooling at the intersection with Edenmore Rd, which is impacting the south-east corner of the property on the corner," Service said.
Waka Kotahi was committed to investigating ways to improve drainage at the intersection, Service said, as well as the nearby grass area to divert water from the property to an existing drain.
Drainage contractors visited the site on Monday.
Service said Waka Kotahi would also look at tidying up and, if necessary, replacing the post and wire fence along the western shoulder of State Highway 3, adjacent to the property, and had removed the rumble strips from directly outside the property.
"Waka Kotahi and its contractor will continue to work with the property owners and keep them informed as we work [on] plans to remedy the situation," said Service.
The affected property owner has commended Waka Kotahi staff for the recent communication after three years of frustration living with roadworks and flooding.
"They have been really good. They listened to all our concerns and I'm satisfied that the problems will be addressed now," he said.
There is currently a 30k/h speed limit at the intersection and a 50k/h speed restriction further south at the Rangitīkei River bridge, where pavement and rail repairs are underway.
Service said motorists were urged to take care when driving through the restricted areas.