More than 1500 plants were discovered at Merlin House on Windlass Lane in Albany following a tip-off early last Thursday morning.
Police were on site the same day and after extensive investigations, the force had cleared the premises by Sunday, December 13.
A Northumbria Police spokesperson told Washington Way:
“Shortly after 10.40am on Thursday (December 10) we received a report of a suspected cannabis farm found at a premises on Windlass Lane, Washington.
“Officers attended and upon entering the premises they found a significant cannabis operation with more than 1,500 plants at various stages of growth.
“The farm has since been dismantled and the drugs seized. Enquiries are ongoing into the discovery.
“Anyone with information is asked to contact us via the ‘Tell Us Something’ page of our website or by calling 101 quoting reference 229 101220.”