North Harbour grabbed 104.5 points to Northland's 75.5.
North Harbour also dominated the Masters mens match, winning the contest 6-2 with Brett Dormer and Gavin Ashwell both recording wins. North Harbour outscored Northland 80 points to 64.
While the rest of the competition hadn't shaped up well for the hosts, there were some bragging rights still on offer in the Open Grade Men's competition.
Northland had put a very strong team together on paper with Luke Brown returning from overseas duties and fresh off a win at the Bream Bay Classic while another Northland stalwart Dale Clarke rejoined to the fold.
Northland managed to hang on to win the match 6.5-5.5, retaining their title for another year.
Wins were recorded by Lee Newman, Dale Clarke, Sheldon Kearns, Kadin Neho, Christian Nitsche and Luke Brown. Ben Bowmar halved his match with Northland outscoring North Harbour 111.5-104.5.
When combining all points, North Harbour were once again the overall winners for the competition with a total team score of 289 to Northland's 251.