Last summer this home on Halawa Drive sold for more than $600,000.
City prosecutors said the former homeowner never saw a penny from the sale.
Alden Ching said his brother bought the home, but Ching and his family currently live there.
"We're coming upon a year now, so for me to even hear this is pretty shocking. I'm sure my brother would be shocked too," said Ching.
Prosecutors said 85-year-old Katherine Ganeko lived in the home alone after her husband died.
Authorities said 43-year-old Susan Chin befriended Ganeko before becoming her caretaker.
The city said Chin convinced the elderly woman to give her power of attorney.
Chin sold the home and deposited the money into relatives' bank accounts, authorities said.
"The unfortunate thing is perhaps that generation is very trusting and also very generous and that's why they are maybe easy to victimize," said City Prosecuting Attorney Keith Kaneshiro.
Prosecuting attorney Chris Van Marter says it took 2.5 months before authorities were notified by bank officials.
Van Marter said the law does not require banks to report suspicious fraud cases to police.
"If the law is changed and the banks discover suspected financial abuse they will report it directly to law enforcement at the onset and we will have the opportunity to preserve assets," said Van Marter.
Prosecutors said the community needs to watch out for the elderly, to help protect them from abuse.
"I can't imagine my parents have gone through some stuff too. I know that whole power of attorney stuff it gets pretty mess sometimes," said Ching.
Shin's attorney, Michael Green, said his client was the only person caring for the woman and they had a good relationship.
Prosecutors said they will get most of the money back to the victim.