Is this a wetbar? It's hard to picture how this sink exists between 2 areas where one normally doesn't have a sink. If it isn't used, decorative screens could hide it. A photo of the area would be helpful.

I just had mold removal on my new house because the contractor decided it was a good idea to wait until the end to put down plastic. They had to spray the mold and wire brush it. Then they treated the wood and sanded it. It wasn't a cheap job. It may be easiest and cheapest to start anew. I also recommend sinking the screws and filling the holes.

Many thanks for your valuable comments. 1. My intention of raised cabinets was to clean it daily, as cabinets that touch floor accumulate lot of dust and food particles below. If we rule out steel legs, any inputs on raised floor only of cabinet area and then cabinets?(Just like plinth in modular cabinets- but this will be permanent and of tiles) I have not seen such structure anywhere, so curious if it will work. Otherwise I will go with traditional ones. 2. Moving pooja out of kitchen is very difficult as other rooms are just enough for their function. Currently a small Mandir is attached on wall where Fridge is shown in layout. I thought the new area could be little extra for all pooja related things. Will like to know the reason of your recommendation, is it odd in whole design, or not suitable in area .. or anything else? How about moving it to corner of dining area?

Amiya, Behind the sink is not an ideal place for stone cladding. You may get it cleaned professionally and the go for a clear stone lacquer.