Unless the owner or the landlord permits it normally you can not make any permanent structural changes. A drop ceiling would be that. What is the issue with the current ceiling?

You could use a cupboard to hide cabels, and, 2 in 1, it decorates the room AND hides cables. You can't put the cupboard to touch the wall because the cables block the cupboard to touch the wall but, who cares?

Nowadays builders from Delhi and NCR are shifting to places like alwar and bhiwadi for apartment construction, as delhi and NCR are not vacant for construction. So, the building materials charges have increased comparatively. Even if you save 5000 or 10000 in design fee, it won't make any difference. As, ultimately you have to bear contractor charges and building materials.

Hello, For free lancing work measure the approximate time and effort required. Then based on your skillset and market competition prices. You may roughly arrive at an overall charge on the basis of per hour effort. Thanks Nitin CORNERSTONE DESIGNS Bangalore