"Winter time . . . [is] when possums are at their easiest to catch because natural food supplies are low.
"By the end of 2018, to see or hear a possum anywhere on the peninsula will be an extremely rare event.
"We're working towards a trap catch of 1 per cent or less across all 9500ha."
Since 2009, 8800 possums have been killed.
Funding provided by the Department of Conservation's Community Conservation Partnership Fund will allow the group to employ an operations manager.
"The money is a great result for us. This means the [pest] control work will not be diluted so much," Ms Rufaut said.
Group trustee David Chalmers said the trust was "pretty happy" with the number of possums culled this year.
"We know there are still some hotspots [and] there is more work to be done.
"Mr Chalmers said the number of possums reduced closer to Taiaroa Head.
Eradication was done by contractors and about 50 volunteers.
The group was working on a strategy to stop possums coming on to the peninsula from Dunedin city.