The raids were part of Operation Ballerina – set up by GMP to target those believed to be involved in the supply of Class A drugs across the Bury area.
A large amount of Class A drugs and cash was recovered and seven men and three women were arrested on suspicion of possession with intent to supply and supplying Class A drugs and remain in custody.
Superintendent Paul Walker, of GMP’s Bury district, said: “This was the second raid in as many weeks that specifically targeted the supply of drugs, and has now seen 17 people arrested. This morning was a huge success with a large amount of Class A drugs and cash recovered.
“Our stance remains the same, we do not tolerate the supply of drugs, and we will continue to take action if there is any suspicion of offences being committed in Greater Manchester.
“Operation Ballerina is very much ongoing, and we are continuing to crack down on the supply of drugs across Bury and the wider region.
“Our most powerful tool in the fight against drugs is the information we receive from the community. If you suspect drugs are being used or cultivated in your area, we urge you to get in touch with the police as soon as you can.”