Is there anything that we can do to stop this? Once a project has been approved as a residential project can a part of it made commercial? What can we do now to force our builder to get the society formed without further delay. Calling up PMC has been of no help here.
If you are confirmed about the residential project alone, you may either make a complaint against them for converting the same into commercial blocks with PMC or any other authority, before that obtain information about this through RTI act.
The builder may be served with legal notice demanding the formation of society failing which you may approach consumer forum for deficiency of services and for compensation for mental agony.
If the construction work done by the adjacent building damages your property, you may advise them to make good the damages to your wall or you can file an injunction suit against them agaisnt this loss suffered by you.