Treasury Casino could be converted into a boutique hotel and an entirely new casino built in Brisbane's CBD under suggestions put to the state government by the casino's operator just last week.

At Echo Entertainment's annual general meeting on the Gold Coast today, chairman John O'Neill confirmed he had met with the Newman government as recently as last week to discuss the company's "willingness" to spend up to $1.3 billion on a new casino and hotel facility in Brisbane.

The Treasury Casino building could be converted to a boutique hotel. Credit:Harrison Saragossi

"We have responded as a company to Campbell Newman's desire ... to help rejuvenate Brisbane," he told shareholders gathered at Echo's Jupiters Casino.

"Discussions were held as late as last week as to possible sites that they might think could become available for a new development of an integrated entertainment resort similar to what we've done in Sydney."