Toitū Te Whenua Land Information New Zealand enforcement manager Simon Pope said the OIO welcomed this month's court decision.
"This has been a long-running investigation leading to action being taken in both the criminal and civil spheres," Pope said.
"The defendants tried to make the purchase in the name of a New Zealand-owned company, despite legal advice that they couldn't do that. This kind of thing doesn't wash. You can't use an associated company to make a purchase on your behalf," Pope said.
"To keep themselves safe, overseas investors can make sure that any purchase agreements they enter into are subject to consent from the Overseas Investment Office. That's a simple act that can prevent these kinds of penalties."
The Herald has previously reported on the case.
The ruse included backdating what prosecutors labelled a fictitious loan document and drafting it by hand to avoid being sprung by a computerised date stamp.
When investigators caught wind of the deception, the pair told further lies and Choi instructed Hur to delete incriminating emails.