"Buying houses is a private thing, not a public thing," he said.
Ms Baker said she could reveal nothing of the negotiations, but welcomed interested parties to come forward.
The auction attracted about 50 people - 60 if you include a couple of neighbouring properties whose occupants watched from behind front fences.
The pickets on one of those fences got a new lick of white paint just before the auction started, but the neighbouring owner asserted this was nothing to do with the attention focused on the street by the do-up demonstration project and the associated media coverage.
"It's the only day that I had," he said.
Auctioneer Mark Sumich emphasised the unusual items included in the property deal, such as the new Toyota Prius that was parked in the garage, a loan of $500,000 at zero interest for a year and 12 months of free electricity - but there were only two bidders.
The woman who started the bidding at $1.45 million said she was "gutted" to have her final offer of $1.65 million trumped by her rival.
"I had a limit of 1.6 and I went over that," said the woman, who did not wish to be named.
Ventilation company HRV led the renovation of the two-storey house in a project to show how common problems in New Zealand's housing stock can be fixed.
"From that point of view the project has been a huge success," said chief executive Bruce Gordon. "It not only shows how to transform a draughty, mouldy and damp home into an inviting, warm and healthy one, it also sets a benchmark for the quality of New Zealand homes which ultimately means improved health and well-being all round."
The 187sq m house on a 306sq m section has four bedrooms - two downstairs, and two at street level which open through french doors on to the front veranda, with a deck and paved areas out the back and small grassed areas at both ends.
Ms Strong, the owner of dog daycare and grooming company Barkley Manor, bought the property for $620,000 in 2002.
Villa with extras
45 Lincoln St includes:
• Prius car, valued at $31,280.
• Free power for a year.
• Home theatre system.
• Whiteware.
• No interest on the first $500,000 of mortgage borrowing.