Thrashing the Lady Hawks by 23 points in the final capped a superb campaign, in which Otago won 14 of its 15 games.
The Goldrush was the firm favourite going into the final but trailed 28-26 at halftime after a sluggish start.
That all changed in the second half, as it blew the game open with a 27-6 run in the third quarter.
The Goldrush outscored the Lady Hawks 41-15 in the second half on the back of some stout defence and woeful Auckland Counties Manukau shooting.
Goldrush coach Todd Marshall, who was named WBC coach of the year, said he was ''stoked'' with the team's first title since 2011, crediting the tight knit squad for the success.
''When you train that hard and results come out on the court all year, it's really pleasing and great for the girls,'' he said.
''They just really clicked and gelled. They just get it. They train hard, they really, really enjoy each other's company. They get on like you wouldn't believe. It's like a family.
''And when you have got someone like Janet Main as your captain, who just puts everything into it, the team just responds. Then you've got someone like Jillian Harmon in your squad, that's a pretty good recipe for success.''
Samara Gallaher, who was available to join the team only because her Australian team _ the Hume City Broncos _ did not have a game, was immense in the final.
She dominated the glass to finish with 21 rebounds - 16 defensive and five offensive - as the Lady Hawks shot a woeful 13 from 58 (22%) from the field.
The Goldrush was not much better from the field, 28 from 72 (39%), but benefited from the Lady Hawks shooting duds in the second half.
Marshall said the team showed some nerves early, before going on to dominate the opposition on the back of some early opportunities in the third quarter. He also credited Gallaher's work rate at both ends of the court.
''She had a huge game,'' he said.
''Her desire to make things go our way is just huge. Getting 21 rebounds is huge. She's a scorer, but then to have that same attitude to get the ball on defensive rebounds and offensive rebounds, it just sums up the will and desire in the team.''
Marshall said the team made his job easy, and was quick to deflect some praise to assistant coaches Dean Ruske and Peter Breen, who did a ''stunning'' job with the players' fitness levels.
''It was just one of those years where everything clicked and everything felt good and the girls all responded to it,'' he said.
The team celebrated with a formal dinner in Porirua on Saturday night, before flying back to Dunedin yesterday.
Women's Basketball Championship
The scores
Otago Goldrush 67
Jillian Harmon 14, Janet Main 13, Soraya Umaga-Jensen 11
Auckland-Counties Manukau Lady Hawks 44
Jordan Hunter 15
Quarter scores: 1st, 12-14; 2nd, 26-28; 3rd, 53-34
