Police arrested a man after raiding a building on Union Street South in Halifax town centre.
The swoop happened on Sunday night and followed a number of complaints from members of the public.
Officers from Halifax Central neighbourhood policing team said a quantity of Class A and Class B drugs were seized and a man was arrested.
Sergeant Sarah Brown, from the team, said “This warrant was executed as a direct result of information received from people within the community who are concerned about what is going on within their neighbourhood.
“There is now zero chance of these drugs blighting someone’s life as a direct result of the action taken.
“I would encourage people who have information about these kinds of activities to contact West Yorkshire Police on 101 or Crimestoppers on 0800 555111.”