Fareham became the Hampshire under-12 champions last weekend without losing a match.
The youngsters won three and drew one of their pool games.
The unbeaten side topped the group on goal difference, having scored 20 goals and conceded just three.
They beat Havant 5-1, Fleet & Ewshott 6-1 and Petersfield 8-0, then drew 1-1 with Haslemere in a very tight contest.
Fareham got an equaliser against Haslemere with two minutes to go, after a well-worked penalty corner move.
They went on to thrash Trojans 6-1 in the semi-final, before replaying Haslemere in the showpiece final.
Fareham upped their game this time and won 3-0 thanks to goals from Philip Larcombe, Fergus Jackson and Sam Ratliffe.
Jackson finished as the side’s top goalscorer with 11 goals.
The team now progress to the South finals, to be held at Surbiton on Sunday.