The process problems identified by Deputy Auditor-General Phillippa Smith emerged in the report from the time the Prime Minister - also Tourism Minister - became personally involved. In August 2009, Mr Key told officials to halt a scoping project on a convention centre proposal to "close off the SkyCity angle". He later explained he had a "broad awareness" SkyCity had development plans.
Mr Key's understanding of the casino's desire for development followed a meeting between himself and SkyCity executives although neither Mr Key or the casino "can recall the discussion" on May 14, 2009. There was also a later meeting between the casino and the Prime Minister's chief of staff Wayne Eagleson on June 17, 2009, at which development was discussed.
After the PM halted the scoping project, SkyCity met the PM's senior advisers in September 2009 who said they wanted changes to the Gambling Act which had previously stymied the casino's expansion plans by limiting the number of pokies and other games allowed.
Then Mr Key was briefed on options for the convention centre at a dinner with SkyCity board members and executives on November 4, 2009. He urged them to "think outside the box".
As the casino and Beehive moved closer together, Treasury began raising concerns about "process and probity".
Ms Smith said: "We have concerns about the apparent readiness of officials to support those discussions developing into more substantive negotiations without preparing to give advice on the Government's procedural obligations and options."
Warnings about process were conveyed to Mr Key in a briefing note on November 12, 2009.
In 2010, the Government began calling for an expression of interest from groups wanting the contract. At a meeting with officials, Mr Key said the SkyCity deal was "a good proposal".
However Ms Smith said the process "fell short of good practice in a number of respects". That included the fact ministers and officials continued to have contact with SkyCity to discuss its proposal.
Ms Smith said these meetings were "not appropriate" as it provided SkyCity with information other bidders did not receive. She also said the casino had the advantage in knowing the Government didn't plan on putting any money into the project, allowing it to shape its offer.
In September 2010, the casino put forward a list of changes to the law it wanted. It also said it wanted the Government to buy land from TVNZ to accommodate a large design for the centre.
SkyCity was announced as the preferred bidder in June 2011 with Mr Key promising changes to the Gambling Act would only come after a public submissions.
Greens co-leader Metiria Turei, who sparked the inquiry with a complaint, said the report was "hugely damning" and showed "the relationship with SkyCity was so cosy that the other proposers didn't stand a chance".
Labour leader David Shearer said: "This has had John Key's fingerprints all over it and it was a shonky deal and John Key is donkey-deep in it."
Project's boost to jobs, GDP in question
The PM said SkyCity's project would create 800 jobs. Picture / Christine Cornege
John KeyJohn Key announced SkyCity's selection as preferred bidder with the promise of 800 jobs on completion and 1000 jobs on construction.
The numbers contrasted with a government feasibility study which put construction jobs at 150 a year for five years - a total of 750. The number of people to be employed in the centre was also lower - between 318 and 479 jobs against 500 fulltime equivalents.
There is also question about the value of the deal to New Zealand, the Prime Minister initially saying it would increase GDP by $49 million. The Auditor-General's report stated a $72 million increase while Economic Development Minister Steven Joyce was last night saying $100 million.
The casino was refusing to comment yesterday as chief executive Nigel Morrison toured Australia with the company's half-year results. In a statement, he said he was looking forward to starting negotiations towards investing the $350 million "provided acceptable returns can be delivered on the total project".
Mr Morrison is known to have become frustrated with delays on the project, the $350 million saved for Auckland's centre recently spent in Australia, supported by both South Australia's Labor Government and Liberal opposition.
Alan Trotter, chief executive of Conventions NZ, said it had cleared the path for the deal to be struck. He said the report also revealed the Prime Minister's ability to strike deals which was to be admired. "There is no such deal as the perfect deal but it's a very pragmatic deal. The key element here is to start construction."
He said conventions of the size the centre would handle needed five to seven years' notice and marketing should begin the moment building started. The centre promised much for New Zealand and the inquiry had sent out ripples of uncertainty. "The Greens have a lot to answer for."
-David Fisher
How events unfolded
May 2009: Key meets SkyCity CEO. Key says changes to the Gambling Act did not come up.
July 2009: Ministry of Tourism and City Council complete convention centre feasibility study. Key briefed on findings and officials recommend developing business case. Officials later told of proposal being developed by SkyCity. Key tells officials to cease work and await SkyCity proposal.
September 2009: SkyCity, Ministry of Economic Development officials and Key's chief of staff discuss Gambling Act changes.
November 2009: Key has dinner with SkyCity board, discussing convention centre and possible changes to the Gambling Act.
March 2010: Cabinet decides to call for "expressions of interest" from other developers. Tender process begins two months later.
May 2011: Process closes. SkyCity, The Edge, Ngati Whatua, Infratil, and ASB Showgrounds respond.
June 2011: SkyCity wins with $350m bid. It requires no state funding but depends on changes to Gambling Act allowing more pokies and other concessions.
June 2012: Deputy Auditor- General Phillippa Smith announces investigation into tendering.
January 2013: Key sees draft report and is "not losing any sleep". The Herald reports SkyCity's plans to increase size of gaming floor.
