Hydroponic cannabis house raided in Vic

A home transformed into a sophisticated hydroponic cannabis crop-house has been raided in country Victoria.

Police discovered cannabis plants in seven rooms of the Shepparton residence on Friday.

Officers working to dismantle the elaborate setup recovered 90 plants from the first two rooms, Sergeant Matt Hunt says.

"It's clear that the rooms have been deliberately converted to grow extensive amounts of this drug," he said.

Investigations into how long the Grampians Parade set-up has been operating are continuing.

The house was raided as part of a state-wide investigation.

No-one was home at the time.