Gambling mogul James Packer's company, Crown, has ramped up lobbying of the NSW government over its proposed $1.2 billion Barangaroo hotel and casino resort as the company and developer Lend Lease work through the approval process.

The latest ministerial diary disclosures confirm Premier Mike Baird met Crown representatives on October 21 for an "update on Crown Resort" and reveal deputy premier Troy Grant was given a "tour of Crown" two weeks later on November 4.

James Packer is frustrated by the delays in building Crown's Sydney Casino at Barangaroo. Credit:Artist's impression

Mr Grant's office would not shed further light on the "tour" but inviting politicians and media to visit its flagship Australian casino at Melbourne's Southbank is a favourite public relations tactic of Crown.

Crown has won government approval to run a VIP-only casino without poker machines at Barangaroo from November 2019.