Do whatever the hell you want to do, regardless of your parents or the (anonymous) internet. Or maybe not.

stay in Canada. There is little value in paying US tuition when Canadian tuition is so damn cheap. Best schools are Waterloo and McGill. UofT is mediocre on a good day. 

None of the schools on your list are very likely choices for a focus on interiors or interests in ephemeral effects or aesthetics. Most of these are programs where the majority of your studio projects are likely to be large urban site planning exercises.  I would strongly encourage you to visit all of them to see the work and sit in on some crits at each - and preferably not during a planned open house.

I doubt many faculty or fellow students at the fancy schools you aspire to will have much interest in, much less respect for, interior architecture.  It is stupid and wrong, but's that's what I've seen.  The quality USA programs in this area will more likely be at art schools and/or a few public colleges.  I would say go to interior design school, but I strongly believe that an architecture license, (and thus an accredited architecture degree) is usually much more valuable in most of the USA.

Competitive and highly ranked schools don't always align with the schools employers look to for quality and competent employees.

Ask local architects what Canadian schools pump out the best M.Arch graduates.

Going to the US for university is stupid and I say this as a dual Canadian/US citizen.

Hi, I am an interior design professional and have been practicing from 3-4 years. However I have had opportunities in my career to take up the role of an interior architect, but its doesn't help entirely as I felt there a lot of things to learn in architecture for me as my degree was in Interior design. So i started looking at colleges to peruse masters in architecture most of the colleges I heard from has the requirement to have a Barch. I wanted to know, other than U of T colleges which accepts non background in architectural students in Canada? 

@tosin

 I would go for GSD if you have the money, not bc the school is anything special but bc they have connections that will help your career or just promote you as you start your own office. That school is kind of like a elite country club/PR firm. In general though I never heard of any anglo-saxon school that is concerned with conceptual thinking, ephemeral effects, and aesthetics. Yeah there is Sci-arc but when I look at the work coming out of there it completely ignores tectonics- work looks cartoony or something and it´s connections are sort of limited to L.A. I could see some faculty at GSD maaaybe being interested in your interests.  As for the Canadian schools- I dunno, U of T is the only one with an informative website and more international faculty, that´s all I know. Also beware Non-Sequitur went to this Waterloo School and thinks its the best school on earth and basically trolls anyone (like Russia troll style) considering any other school in Canada constantly.  I guess you should visit the schools in Canada to find out yourself? 

@tosin perhaps you should look into princeton also

@tosin

If you want to participate at a higher level of discourse in the profession and see yourself working outside of Canada - the connections you'll make in the USA/UK are incredibly valuable. If you're interested primarily in the aesthetic issues of architecture and the avant-garde you might want to consider some of the smaller niche schools as well.

Of the schools you've mentioned you might want to prioritize:

UCL (You know why), GSD (Pulls profs from all other schools) and Columbia (Still a strong focus on the digital project). On the Canadian side, U of T is slowly becoming our multidisciplinary school in Canada with the emphasis on many of their design programs. Fair warning that UCL doesn't offer much in way of funding (though there are a few bursaries here and there).

Other schools to consider might be the AA, Yale, SCI-Arc, Pratt, PennDesign, and RCA. Of those mentioned only Yale, Penn, and SCI-Arc would offer the most funding. If you're considering Canada, both Manitoba and Carleton currently has faculty (and visiting faculty) from the Bartlett so the spirit is there even if the facilities are not up-to-par (considering say the B-Pro equipment at UCL).

If you're concerned with cost you should prioritize work on portfolio, building connections, GRE, and relevant (but interesting) work experience. I know many people that received full or near- full funding for the GSD, Yale, Columbia, PennDesign and SCI-Arc. As long as you can prove you and your work are valuable to the school, school cost becomes less of an issue.