However, Mr Thompson said the plans were preliminary. Any increase in floorspace would not necessarily result in a larger gaming area, and "any plans we have to enhance our Auckland property are not linked to the convention centre negotiations and are not contingent on concluding the negotiations".
"We are always looking to enhance our property and improve customer experience. This is business as usual."
The casino had not made any final decisions on the work.
Mr Thompson also said no deal had yet been struck with the Government over the convention centre.
A spokeswoman for Economic Development Minister Steven Joyce, whose ministry has been leading negotiations with SkyCity, said yesterday that while talks were well advanced, "it would be incorrect and misleading to say any final deal had been reached".
"The minister is not expecting any agreement to be concluded until after the Office of the Auditor-General report has been released."
The Auditor-General has been investigating how SkyCity was chosen to build the convention centre after Prime Minister John Key dined with the company's board and suggested they should pitch for the contract.
A spokeswoman for Mr Key yesterday confirmed his office had now provided feedback on the draft report, "as have other relevant interested parties".
Last month, the Office of the Auditor-General said it would publish the final report once it had received feedback on its draft from the relevant parties.
