"Demolition has been completed and services are being restored," Mr van Baarle said.
Work to remove asbestos in the buildings, a condition of the resource consent, is ongoing.
Mr van Baarle said removal of asbestos would also be completed this month.
Once completed it would be signed off by an independent specialist and approved by the council.
He said a marketing campaign for sales would start in early March and the properties would be for sale from $190,000.
"We've priced them extremely attractively to get the ball rolling and get buyers in," he said.
The lots range from a quarter of an acre to three-quarters of an acre.
Mr van Baarle said it was up to buyers what they did with the existing buildings, and that the buildings could be demolished at the buyers' request.
"They're still in their original state, they've been left to new buyers to renovate.
"There's no restriction on removing any of the buildings and just having the land."
Mr van Baarle said the project had cost "lots of money bringing it to the market but that was expected. Everyone's looking forward to bringing this to market ... and finally completing this long-standing project."
South Wairarapa District Council group manager infrastructure and services, Mark Allingham, said it was the contractor's responsibility to remove all asbestos on the site.
"It's a hazardous material so it has to be done very carefully."
Mr Allingham said he was glad the extra land was being utilised.
"It will be excellent to have a new development at that end of town," he said.