"And what that means is that the margins that can be made on vertical infrastructure such as buildings is far less than it was before, therefore the need to make sure that you're absolutely on point when you come to do that work is essential because very quickly a very small margin can turn into a very big loss," he said.
"You always want increased competition but as long as increased competition isn't a race to the bottom. Unfortunately it has been a race to the bottom so people are going in incredibly tight to actually win revenue, so they've been chasing revenue as opposed to chasing profit."
These issues weren't isolated to New Zealand and around the world people in the building sector were having to work harder "to make an honest buck", he said.
Prentice believed that the way in which contracts were procured needed to change as right now the client or customer was pushing all the risk to a consultant or contractor.
The best contracts without a shadow of a doubt are those contracts where risks are explicitly shared between all three parties, consultant, contractor and client.
"The best contracts without a shadow of a doubt are those contracts where risks are explicitly shared between all three parties, consultant, contractor and client ... I think the client and the customers, particularly central and local government, have got a long way to go in respect of maturity in how they procure projects."
Prentice's comments were echoed by Registered Master Builders Association boss David Kelly.
"We need to work with government to improve the way we manage pricing and risk in our sector," Kelly said.
"Government procurement should not be an exercise in one party minimising all their risk. At the end of the day, all parties need to commit to working collaboratively and equitably to deliver on a project. Anyone building or renovating a home, let alone a multimillion dollar construction project, appreciates that there needs to be some flexibility in adjusting for costs", he said.
"We need to move away from focussing on cheapest initial price — this never gets the best result, limits innovation and stifles research and development," he said.
In the wake of Fletcher Building saying it would not bid for any more big construction work, Auckland Airport chief executive Adrian Littlewood said any company with big projects would consider using overseas firms, including from China.
"We like many others in New Zealand would like to see a proper and well functioning construction industry [here]. There are also a bunch of European operators who have acquired New Zealand businesses and operate in New Zealand," Littlewood said on Friday.
Overseas firms would have to draw on New Zealand sub-trades if they were involved in big projects as it was difficult to import all the skills.
Auckland Airport is spending $1.8 billion over five years on building infrastructure and Fletcher Building is involved in one phase of the Airport's big build — the international departures terminal.
Littlewood said Fletcher's focus on completing projects was important for his company.
- additional reporting Grant Bradley