Lincolnshire Police uncovered around 75 cannabis farms across the county in one year.
Criminals are mainly using rental properties advertised through social media for their cannabis grows because they can avoid formal checks.
Police have warned that criminals often use a “front couple” to visit the property before covertly converting the house.
By adapting the house they will then cause water leaks before modifying electrics and putting holes in walls.
Inspector Claire Hime said: “We are asking owners of privately rented accommodation to carry out thorough checks of their properties on a regular basis.
“Landlords should also carry out official checks on any potential tenants. If anyone notices any suspicious activity they should contact us in the first instance.
“Landlords should carry out regular checks and look out for electrical wires that have been tampered with, blackened out windows and a sudden jump in electricity bills.”