tenant security cameras without permission

[JC Conchas]

Bought 4-plex, one tenant installed security cameras on the outside of the building, because their car had been previously stolen. I confirmed with Realtor, tenant never asked landlord for permission to alter the building. They were installed one weekend and the previous landlord didn't care. so, he never asked the tenant to remove the cameras. I'm having the building painted. I want the cameras removed so we can repair and patch any and all holes. The property is not subject to rent control. Do I need to serve tenant 3 day notice to remove them or can I have painters remove them. Since they altered the building without permission. thanks JC