This year a limited edition, 150 copy catalogue of the works, with artist profiles, is on sale for $15. One copy, containing the signatures of every artist, will be auctioned. Also for the first time, one of the works will be given a "people's choice" award.
Each year the auction works represent a wide cross section of the locally produced art.
"I'll go around to places, research what the artists are doing, where they are. I get a picture in my mind of what I'd like the exhibition to look like," Mr Cranenburgh said.
"When the work comes in you stretch it a bit this way and that. That's art, it's people pushing the boundaries."
The auction is also about the buyers.
"People don't want to be force-fed art but I think this is an easy, mutually beneficial way to widen the audience and for the community to work together," Ms Pickering said. Mr Cranenburgh and Ms Pickering believe the arts - as a sector in Whangarei - can't survive without business support.
The couple are grateful to the sponsors whose backing enables every cent from the auction to go to the hospice.
• The works are exhibited at the Old Library in Whangarei, between 10am and 4pm daily, with the auction next Thursday, the doors open at 5pm and bidding starting at 6pm.