THREE cannabis farms are being discovered every week in Kirklees.
New figures show that a police crackdown on cannabis cultivation in Kirklees last year saw police raiding premises around three times a week.
And in the latest incident, police recovered growing equipment from a house in Cowlersley.
They believe the house in South Avenue had been used to produce a large number of plants.
Figures released by West Yorkshire Police Under a Freedom of Information request showed the force’s detection of cannabis cultivation in the last three years has seen more than 400 operations shut down.
In 2008/2009 the force recorded 100 incidents of cannabis cultivation and this rose in the following year to 173.
The number of incidents for 2010/11 was 137.
A West Yorkshire Police spokesman said: “The figures reflect our force’s intention to make West Yorkshire a hostile environment for people wanting to grow cannabis.
“They also demonstrate our determination to being proactive in finding the factories and to act on information that the public provide.
“Within West Yorkshire, a large number of our cannabis farms are, in fact, very small with a high percentage of them constituting fewer than 20 plants.
“These represent a very small cultivation operations.”
Many of the farms and factories have been found after public tip-offs to police. On many occasions, people have become suspicious of houses where the curtains are never drawn back or where there is often a heavy smell in the area.
Police have also used heat-detecting equipment on board the West Yorkshire force helicopter to detect high heat source readings through roofs.
Many of the farms, especially the larger ones, see the criminals using light and heat systems to cultivate the plants.
The Cowlersley house was searched by officers last week, after the landlord discovered plastic sheeting in several of the rooms.
The electricity meter had also been bypassed, which is typical of cannabis production on a large scale.
A spokesman said: “Enquiries are continuing and we would urge anyone with information to contact the Valleys Neighbourhood Policing Team on 0845 6060606.
One neighbour said: “We noticed the gardens were very overgrown and we wondered if anyone was living there.
“When police arrived they carried out a number of boxes and other containers”.
Back in 2008 officers swooped at a house on Richmond Road in Hanging Heaton, Batley, and found more than 300 plants.
The cannabis factory spanned over several rooms contained lighting units and ventilation systems were found and the electricity supply had also been diverted.
Some of the factories had been growing plants with an estimated street value of over £¼m.
In a separate incident in the same year police found cannabis almost £100,000 at a mill complex in Kirklees.
Around 300 cannabis plants were recovered at the two factories inside the Headfield Mills complex off Savile Road, Savile Town in Dewsbury.
In 2009 sizeable seizures took place in Longwood, Fartown and Newsome, with cannabis plants worth more than £150,000 and £170,000 in a raid on a Huddersfield industrial unit in Brockholes.
But one of the biggest hauls for Kirklees division officers was uncovered in dawn raids last year at nine properties in Heckmondwike and Batley when 2,000 cannabis plants were seized.
A request from The Examiner to break down the quantity of drugs was declined by Freedom of Information Officers who said data was not collated to specify the number of plants.