Opener Jake Harvey scored 71 for the hosts, while Brendan Quinn took 5-47.
NOBM opener Jesse Singh was unbeaten on 102 from 85 balls, including a dozen boundaries and three sixes.
Jack Ward added a solid 70 from 82 balls.
Complete Flooring Napier Technical Old Boys (NTOB) were the only side to win a toss and the game, beating Sharpies Driving Range Taradale by eight wickets at Nelson Park, Napier.
The visitors scored an anaemic - by T20 standards - 80 in 26.3 overs with just two players in double figures but below 20 runs.
NTOB seamer Liam Rukuwai took 5-23, including four maidens, while fellow opener Christian Leopard took 4-23, including three maidens.
The hosts needed 8.3 overs to eclipse the target with 84-2 as No4 Indika Senarathne set the platform with 53 not out.