Police have seized over $2.5 million worth of cannabis in extensive drug raids across Sydney on Wednesday.

Six people will face court on Thursday, charged with participating in a drug cultivation network operating across south, south-west and western Sydney.

Police raided suburban homes in Peakhurst, Padstow, Bankstown, Yagoona, Beverly Hills and Granville. In each home they found a sophisticated hydroponic set-up being used to grow cannabis.

In footage of the raids, police are seen storming into one of the homes and arresting one man who complies with them. More footage shows a number of indoor spaces in which cannabis was being grown.