I saw some great property there.
How ever there is a 70 years lease left. The property was developed and completed in 2004.
Hence, after 10 -15 years staying there, what is left is 55 years on the lease. the question is, if i try to sell that time, the price will definitely drop, because who wants to buy a property with 55 years left on lease? If need to renew lease, everyone one in the condo needs to pay the premium. if one does not pay how to renew the lease?

Also , there are so many property developed around it, front back left right... there will be competition of rental apartment. If no one rents it, the maintenance will be high. What are the other risks buying a 70 years lease property?

I'm not familiar with this area, but if as you said, left, right, front ,back are all housing development, then it's very unlikely that the gov will plan to do some big scale development there after the lease. Therefore it will be easy to get the lease renewed.

The question is, how much will be the premium by then? You may google some stories about lease renewal reports, e.g. those in the older part of PJ. So if the location is good for you, the house design is good for you, the condition and environment is good for you, and the price is cheaper than the neighboring projects with longer lease or freehold, then you can consider about it. else the choice is pretty obvious.