Police seized more than 240 cannabis plants during a raid on a house in Weston-super-Mare today.
Officers discovered the plants, along with extensive cultivation equipment, after carrying out a search warrant at a property in Laburnum Road.
Neighbourhood beat manager, PC Simon Robinson, said: "Local people reported their suspicions about the house to us and we have acted on that.
"There were six large rooms and a loft full of plants, which were all destined for our streets.
"These factories, set up with sophisticated hydroponics equipment, are dangerous and the associated crime and anti-social behaviour that go with the cultivation of these drugs is detrimental to the community.
"We will not tolerate it in Weston-super-Mare and we will relentlessly pursue those who think they can produce and sell drugs in our community and put them before the courts to bring them to justice."
Police advise anyone who suspects a nearby property of being a cannabis factory not to approach the house, but to call 101.