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Regulatory changes may be needed to bring more competition to the building supplies sector.
A Commerce Commission draft report into the building product sector has found competition in the market isn't working as well as it should be.
The watchdog has found it's too difficult to get innovative products to market, and established players are blocking land use by their competitors.
Building Industry Federation Chief Executive Julian Leys told Tim Dower a national products register with information about each product could be one piece of the puzzle.
He says access to information improves decision making, will make it easier for new products to enter the market, and will increase competition.