http://www.ubs.com/1/e/ubs_ch/private/mortgage.html

Hello!
here on that link above you can find everything about mortages.
The good thing is that most selling properties in CH are freehold. You have to pay some extra taxes if you sell your flat/house before 5 years time. They made this rule to avoid speculation and keep the market in balance.(for details ask the "Steueramt" at your Wohngemeinde).

Hope that helps... Have a nice weekend!