"Stark" findings about the poor state of the Wellington region's hospitals have triggered a rush to get a $2 billion fix-it plan under way.
Newly released DHB documents show earthquake risks and escalating health demands have been the trigger for "dramatically changed urgency and priorities" for the region's health leaders.
They show the Capital and Coast and Hutt Valley DHBs rushing to get a $200 million plan in front of Treasury, to kick off a regionwide overhaul by 2035 roughly costed at $1.5 billion-$2 billion.
This aims to rapidly relocate the emergency department and many other services by early 2024, creating 50 per cent more ED spaces and four new intensive care bays - space that reports say is desperately needed.
"Lack of capacity to meet demand and increasing patient complexity is causing delayed care and patient harm," one report says.
"This shortfall means that we are increasingly cancelling planned care to provide acute services."
The big shift-around at Newtown depends firstly on getting the new children's hospital in Newtown open, to free up space to move into
The major Heretaunga tower block at Hutt Hospital had less than four years of life left, even before it was rated 15 per cent of seismic standard recently
The master plan forecasts up to 350 more hospital beds needed in the region by 2035
The DHBs have been working on the plans since early last year.
Their recent discovery that the Newtown emergency department was just 34 per cent of earthquake standard led them to put things on a fast track.
A wider checkup of their other buildings had already unsettled them.
"The findings about our facilities and sites were stark," they say of the consultant's report back.
The 1970s high-rises in Wellington are suffering a lack of maintenance, as are the emergency systems and telecommunications in all the region's hospital buildings, to name just a few of the inadequacies.
"This reflects a legacy of a poorly funded health system, compounded by continual DHBs' deficits over time, which has made the choice to invest in facilities and infrastructure difficult.
"The Kenepuru and Hutt Valley hospital sites and infrastructure require significant upgrade and change given the age and condition of the sites. They will be reconfigured to be part of an optimal hospital network."
None of this will come cheap.
The documents show the boards considered and discarded options to demolish and rebuild Wellington's ED, or strengthen it, as either too slow - 10 years to do a detailed business case - or too disruptive.
They have settled instead on major moves involving refurbishing 14,000 square metres of existing buildings over coming months.
Last night, Health NZ Te Whatu Ora told RNZ that: "Due to the complexities of the services involved we are still in the process of finalising the indicative business case, and are also in the process of updating the cost figure to reflect the construction market in Wellington at this time.
"We continue to work to progress this important project at pace."
The master plan revolves around how clinical services are divided.
"Hutt Hospital is the only site that can increase theatre capacity in the short-term," board minutes said.
It is envisaged the Hutt would get five extra theatres, but that complex surgery would be focused on Wellington Hospital only.
One report says the Heretaunga block would not be demolished until the final stage three of the master plan, but that looks unlikely now because of its low quake rating, though it did win a reprieve of sorts from closure last month.
If Wellington's ED was not already far too small, the hospital might struggle to justify closing it.
"This building would not be identified as earthquake prone," said the detailed seismic assessment of it, which was released to RNZ.
"If a building is not earthquake prone, there is no requirement to undertake seismic work. However, this does not mean that the seismic risk posed by the building is negligible."
The assessment said the ED would probably struggle to function after a major earthquake.