It estimated $10.3 million a year over the next decade, and she would ask for that when the council prepared its long-term budget.
"We need to meet rapidly increasing demand and provide playing surfaces that stand up to high use and wet winters."
Sports parks manager Mark Bowater said the Longdill & Associates study confirmed the need for additional playing capacity to meet the expected demand.
The money would provide 20 new artificial fields - half of them in the central area, four in the south and three each in the north and west. However, there would still be a potential need for up to 300 sand-carpet field upgrades to help meet shortfalls for training.
The move for more capital improvements was welcomed yesterday by Howick parent Navzad Cooverji, who said the Fencibles 10th grade soccer team could not play a game from June 4 until July 30. Despite the lack of competitive games, he said, the team won the Clendon Football Tournament.
"Thank you, that would be welcome," said Mr Cooverji.
The present regional budget for capital improvement is $25 million, and $30 million is spent on field maintenance.
The Longdill study found the region's 777 winter fields for community use gave the capacity for 8544 playing hours a week and could meet demand - if it were not for wet-day closures.
It was predicted that the shortfall in capacity because of the closures would worsen from 1724 hours to 2216 hours in a dry season, and to 2984 hours allowing for closures.
LOSING GROUND
Auckland sports field supply:
* 4666 football, rugby and league teams
* 7849 field hours demand
* 1724 hours short (when wet)
* 2216 hours short (dry) in 10 years
* 2984 hours short (wet) in 10 years
