Interior architecture? Do you mean interior design?

I did some search in Australian course search databases and comes out with the list of Australian Uni that offer interior design for international students as follows (no particular orders):

RMIT Uni (www.rmit.edu.au)

Swinburne Uni (www.swinburne.edu.au)

Of course there may be some more. You are more than welcome to use the websites below for your search base. Tuition fee & requirements will be available from the uni’s websites. Please make sure that the information you accessing are the ones for international students, not for local students, as there are some difference in regards to tuition fees. Once decided on the uni, fill in the application form and send it together with certified copy of your academic qualification (in English and original language). Depending on your country of origin, you may need to submit an IELTS test as proof of your English proficiency (www.ielts.org). The process will take abt 2-3weeks, depending on the time of the year.

Some may argue that the university belongs to The Group of 8 (www.go8.edu.au) are the ‘famous’ one. However they group was formed just to unify the promotional effort. The members cannot claim that they are the best at everything that they offers. Some organisations do try to make ranks of Australian uni but each one of them have their own share of criticisms. To tell you the truth, there are no “Best” uni ranking recognised by the Australian government.

There are only 42 (soon to be 43) universities in Australia, all of them are fully accredited and they are tightly regulated, therefore the quality and recognition of their graduates are equal from wherever university you are studying from. The most important thing is you have to READ the course information carefully, since some courses may have the same name but different content.

Hope this helps. Good luck on your study and welcome to Australia 🙂