"It is an offence to fail to comply with a stop order," Mason said.
The main page of Green Gardens Finance's website says it is "coming soon".
Other parts of the website accessed by the Herald say it is a "New Zealand owned finance company providing personal and business investing solutions" in operation since 2004.
"Your investments would be a part of the Green Gardens Trust Fund for the purpose of property development in Auckland region," the website said.
The investment section of the website offered returns of 10 per cent for one year and 12 per cent for three years.
"All your investment will be guaranteed by the property equivalently," the website said.
The minimum amount accepted was $50,000.
Chapman Tripp partner Ross Pennington said this is the type of proactive action the FMA is beginning to take under powers it received last year.
"It's another interesting instance of the activity of the FMA in the market and of the fact these powers are there and will be used," Pennington said.
"We've been talking about them for some time in terms of that notion of being a sentry rather than an ambulance at the bottom of the cliff and hopefully that will lead to less financial damage occurring in the market as result," he said.
Green Garden's director was not available to take calls.
The stop order issued by the FMA said Green Gardens Finance's website include an ad for an offer of debt securities that did not comply with the law.
Hsin-yun Li is listed on Companies Office records as Green Gardens Finance Trust's director.
Its shareholders are listed Gang Wang, Yan Zhang, and the North Harbour Trustee Company.
