A property spruiker who promoted a scheme to "buy a house for $1" has been described by a judge as an unreliable witness who was "habitually careless with the truth".

Rick Otton engaged in misleading and deceptive conduct when promoting wealth creation strategies though his book, websites, free seminars and boot camps for investors, Federal Court judge Jacqueline Gleeson has found.

Rick Otton sold the ideas in his book through seminars, websites and personal testimonials. Credit:Facebook

The Australian Competition and Consumer Commission launched a case against Mr Otton and his company, We Buy Houses, in 2015, claiming he had breached consumer laws.

Mr Otton sold the ideas in his book through seminars, websites and personal testimonials, claiming they would teach consumers to buy property without a bank loan or any financial outlay of their own.