Remember my post Tanhaiyan Naye Silsilay Wala Ghar? Well it turns out that it was indeed Marina Khan’s house that was used in TNS. Check out this video:
I was browsing the TNS thread on GupShup forum and a user marinakhan was answering questions about the serial. So I thought I might as well ask my question about the house too. Many thanks to the user for posting this link to help me out. It feels so good to have this mystery solved.
Link to original video: http://www.youtube.com/watch?v=G_qCfwZvW-o