Property spruikers are on notice to provide consumers with information about cooling-off periods if they sign up to deals at seminars.

There have been growing concerns among state and territory governments about the high-pressure sales tactics of spruikers offering property investment deals at free seminars.

In February, the ABC revealed authorities were monitoring the activities of 15 spruikers across Australia.

The New South Wales Commissioner for Fair Trading, Rod Stowe, says there could be a case for more comprehensive laws to deal with spruikers.

"It is an area that falls between the cracks somewhat," he said.

"They aren't real estate agents regulated under the property services legislation, they don't come under the financial services legislation administered by ASIC.

"They are promoters of property investment schemes but they do need to comply with various aspects of Australian Consumer Law, and one of those areas is in relation to the 10-day cooling-off period that relates to unsolicited selling.

"Where a trader is involved in selling products other than their normal place of business, then these provisions apply."

Mr Stowe says property spruikers must inform consumers of their rights and must not make false or misleading representations to people who attend the seminars.

"I think it's the hard sell that accompanies, the initial information that's provided to the public about investment in property," Mr Stowe said.

"People going along, thinking they're going to find out some techniques to get involved in the market who unwittingly find themselves under pressure signing up for very expensive training programs and other products.

"It's that hard sell that a lot of consumers may be unaware of."

Well-known spruiker Rick Otton has made an enforceable undertaking not to operate his seminars in Western Australia after concerns were raised in that state.

State and territory ministers are due to discuss the issue of property spruikers next month.

Promoters can be liable for civil and criminal penalties of $1.1 million for a corporation and $220,000 for an individual if they breach Australian Consumer Law.

Do you know more? Contact investigations@abc.net.au