The owner of the derelict Broadway Hotel in Woolloongabba has taken the Australian Institute of Architects to court, claiming the peak body defamed him in an email to its Queensland members.

East Brisbane general practitioner Malcolm Nyst, the Broadway’s owner, lodged a claim in the Brisbane District Court on March 29 against the national peak architects body and the executive director of its Queensland branch Melissa Greenall.

According to court documents, Dr Nyst made a claim for damages of $175,000 and aggravated damages of $75,000 against the AIA and Ms Greenall.