It sounds like your underlying concern is how to make better use of the living room area. Removing the wall will give you a greater visual impact of the staircase from the living area but does not necessarily make the living space more usable. You might wish to consider how you are using the living space itself, that is, the furniture arrangement. Perhaps, you might want to consider spreading the furniture out by placing the TV on the left side wall, sofa/ couches in the middle of the room facing each other with a coffee table in the middle....i've attached a rough pencil sketch as an idea....hope this helps...

If I understand the seasons in India correctly, you have already been through the rainy season. Don't wait until the next rainy season to get the problem with your drainage fixed. Now will probably be the ideal time to get it fixed. Please get someone who will tell you what to do and then have the work done. The paint on that wall in your beautiful home will keep coming off!

Yogender Sharma To make a grass cover, the first thing you will need to ensure if whether the structure of the half basement is capable to holding a green roof. The next would be to waterproof the top again, keeping in mind the soil and the constant contact with water. Once these things are done, you need to locate were it is you want the lawn and ensure you have access to a drainage within or at best near it the area. You will then require the services of a horticulturist to help you set up the lawn. In terms of cost, it really depends on quite a few factors Existing condition of the structure Location Quality of Horticulturist Type of Green Cover etc....

You can add a cnc cut jaali as a cover around it. It will make the facade look nicer and attractive as well as not interfere with any repair work and the pipe system in future. Please contact us for details: 9988866472. Thanks