A house should be your home. As such, it should not be considered an investment. Assuming you are planning on staying in Switzerland then if you move in the future any drops in value will be offset by the next property. By considering the house as a home rather than an investment you should do well out of buying.

As an investment then the risk is that the value drops. Since you are borrowing money this will amplify any gains/losses making it riskier. You have 40% of the asking price, typically 5% of the property value can be used for all fees associated with purchasing - legal fees etc. If the property value drops by 15% you're initial investment would therefore be down 50%.

As with most investments if you are a forced seller then it could be a very bad idea. If not, you should be fine as you are saving on rent payments, to a degree, each month.

remember too that interest rates are very low at present on mortgages. you can get a 1.8%+ . however if interest rates increase in time, your house value will decrease. ( low interest rates allow to buy more expensive properties and consequently when interest rates rise, property values must decrease to allow for the higher mortgage rates! ) it used to be just the opposite. my first house increased in value by 100% in 10 years!!but those times are over. and remember, as you invest in your property, your investment is blocked. you cannot just take back your money.....and reselling a house is not often profitable......especially with the property gains tax imposed!! equities for the long term seems wiser.

Thanks for tha advice! For almost like a month i am seriously thinking about it! i know once i buy a house! Most probably it is a blocked investement especially i don't have any family to live in for a long term. (I know those days are over. My father bought his first house in 70s and till this date prices have increased almost 8 folds).

@Don As you said buying a house will save me some money on rent payments but the question is at the end how much am i gonna save on the rent! is it really worth putting investment! considering if i am going to stay in switzerland for next 5 years.  

and is it true! As being Non-Eu i can not put the house on rent if i move to another country?

As you are non EU you have to own the property for at least 3 years before you can rent. This is in principle so even if you've done this there may be further restrictions i.e. I am making no guaranties it will be possible for you. 

Some of the other areas to consider if you go down this route;

If you rent will you pay a management firm to do this on your behalf? Are you willing to deal with the process yourself when you are living, potentially, far away?

If you can't rent for whatever reason will you be able to pay the CHF mortgage with your new job in your new country (Typically Swiss salaries are higher)?

If you don't rent out then will you be happy with the returns. An 8 fold increase you mentioned in 35yrs (1979) only equates to 6.1% p.a. or if it was 44yrs (1970) then 4.8% p.a before costs. This is quite low given the timescale. Rent will increase this figure but then you have to account for mortgage payments, property upkeep, taxes, changes in foreign exchanges rates etc.

All in all there is quite a lot to consider if you want to go down this path.

I fully understand that you don't want the money to languish in a bank account so it's great that you want it to work for you. Whether property is the right area or not to invest in is a personal choice for you. Just make sure you are fully aware of pros and cons of all the options available to you before you make a decision.

As is always the case what may be best for you will be down to your personal circumstances so there is no way I can recommend either buying a property or not. If interested, I can PM you a company who deals with this.

Best of luck either way.