cool --but you can see the entire floor has been raised--do you have the ceiling height? a closet 'step up' would be less of a structural commitment, OR a buildup under builtin furniture--like bookcases flanking a fireplace, also some great ideas on HOUZZ i'd never have thought of. sorry i'm not tech-ie enough to paste the site:) of course if you go 'structural' --all walls and ceilings are fair game as well. remember that ease of access [or lack thereof] can affect stealth mode greatly--as in your pic: every time you step onto the 'box' in your pic you would hear a 'different' sound.

For your family - create an entry hall and mud room - consider a wide free standing two sided "bookcase" or other wide screen piece centered in the space, just about 9' into the room, to screen the rest of the room. On the end wall, near the kitchen, try a hall tree with a bench and hooks and use a mirror over a pretty sideboard on the front wall. Shift the dining room table closer to the entry and kitchen, making the family room larger.

Dear Amit, Thanks for working on the same and pointing out the things some of which I have not thought of.I am attaching the main design which was given to me by the builder.I She have worked in the main plan and made some changes as below: -She have clubbed common Bath as per the original plan with the MB to make it bigger,but no option was seen to extend the attach Bath. -I was thinking of keeping fridge at the kitchen and W.M inside the common Bath. -She have suggested sliding door in MB which I can change it. -I haven't thought regarding the position of the TV .You are correct that it will be too far. Can you please suggest how can I utilise the spaces in a better way. -The work which have been done is as below: 1)We have broken the common Bath wall and clubbed it with MB. 2)One wall of the kitchen have been broken to make it a open kitchen. 3)She have changed the location of the main entrance from 4th part of the south ,as I didn't have any option to change the location of the main entrance to other direction .As per her 4th part on the south from right is ok for entrance. 4)Right now the entrance is as per the builder design .We haven't changed it till now.

You could integrate a single automated mechanical chair System on to the side of the railing which the Elders could use with ease. And you don't have to modify the existing staircase. And I can technically give you a working solution if you are interested. Contact 8073342913