Bruhat Bengaluru Nagara Palike (BBMP) has its branches in every ward. They are called ward offices, and they will have the assistant engineers, junior health inspectors, work inspectors, garbage supervisors and all other important stuff related to your ward. So, you need to know where your ward office is, to get anything done from BBMP.
To help everyone in Bengaluru who is searching for their ward office, Opencity.in is mapping the ward offices of all 198 offices of Bengaluru, through this form. Since the form involves collecting the location data, you might be prompted to share your location. You can either allow access to your location if you are in front of ward office, or manually drop the pin to your ward office location, provided you have the ward office photo.
http://opencity.in/form/bbmp-ward-office-mapping