How far are you into your Chem Eng? Typically you get 4 years of student finance and for an undergrad real estate you would be looking at starting from the beginning again.
Alternatively - it may make more sense to complete your current degree and then do a one year conversion masters.
If you look for some of the big firms CBRE, JLL, Cushman and Wakefield, Savills etc - you may be able to find a week's shadowing work experience over the summer to try and get a bit more flavour of what's involved in the actual work.