The biggest short-term impact will be on the UK currency with some experts predicting a 20% fall in the event of a Brexit vote. A weaker currency would attract more overseas investors to the UK while making it more expensive for UK investors to acquire overseas property. How this would balance out in the longer term, in the event of a European exit, is anybody's guess at this moment in time. However, do not forget that the UK buys more goods and services from Europe than it exports to the European market therefore Europe needs the UK as much, if not more, than the UK needs Europe.