Saywood later became aware of "significant rot in a window frame" so commissioned a building report which revealed rot, "bogged" weatherboards and obvious defects which needed repair, the tribunal said.
Cartwright, the tribunal said, told Saywood during the sale that an earlier offer on the house did not proceed for financial reasons and failed to say the first tenderers' contract fell through due to a building inspection report.
The tribunal said Cartwright minimised the content of that report.
Saywood and her partner lost $185,500 when they on-sold the house and, with their costs, were out of pocket $207,731. They sought reimbursement of the full amount from Cartwright in the tribunal.
The tribunal ordered Cartwright to undergo training, pay Saywood $20,000 for the loss she had suffered and $10,518.50 for surveyor, building inspector and legal costs.
Cartwright was also ordered to pay a $5000 fine.
Waymouth said today the biggest part of the fine was $20,000 general or unspecified damages which was the largest he knew of for that type of fine.
He is using that case to warn other agents of big financial fines for misconduct, pointing out that the tribunal can make orders of up to $100,000.
Waymouth, of Auckland-based Realty Law Consultants, acts for many agents and runs seminars and training courses for national agency chains.
"This is a precedent," he wrote in a paper for a Christchurch real estate conference a few weeks ago of the $20,000 general damages included in the order.
Other agents should beware, he said.
"This could be the beginning of a disturbing trend," Waymouth wrote. Agents found liable for unsatisfactory conduct or misconduct were being ordered to pay people compensation which is in effect damages for other non-specific matters."
Chris Kennedy, Harcourts Group chief executive, said Cartwright had pleaded guilty, was censured and fined but because he was no longer a member of the Harcourts' team, he had no further comment to make about it.
Cartwright, who has sold over $120m of property during his career, said he had paid the money but would not comment on what he thought of the decision.
Saywood said she and her partner has since returned to Invercargill: "It took three years to get to this end point. I've been really disappointed it has flown under the radar. It was really frustrating. My husband went over to the Solomon Islands for a nine-month stint of work to recoup part of the money," she said.
"It was hell, really," she said of the emotional, personal and financial costs.
Cartwright now works for Ray White Johnsonville.
Carey Smith, Ray White chief executive, said today that Cartwright worked for Harcourts at the time.