Give search for home theatre door in houzz and it will give you a few ideas. But finally what you have to think or take help from interior designer is about the theme of your home as this door should also get aligned with your house theme. In general having hallway as part of home theatre is not advised so if you can change it, it would be better. But if you can't then at least install auto closure.

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.

The layout looks quite resolved with precise space for circulation, privacy well worked in bedroom from living room. I was just curious as to where can be the balcony, verandah or terrace like open spaces that could be the most important spaces to interact with outer world, the open sky and nature-some interior landscape would make your layout a plan - a real landmark.

Dear Mr. Manjunath, It would be really better if you collect quotes from both online/offline professionals. When a turnkey project (Design + Execute) is assigned, overall costs remain low and would be better negotiable with the construction firm. For design only, it depends on the intricacy of work and the BUA of house. Normally, a site visit and a 2D/3D layout without approval assistance would come in between 2.50- 30 rupees per sqft of BUA depending on the firm's category. Regards, Aurum Ideas and Spaces Bhubaneswar