Is not quite correct to say many houses are built for tolerance for additional floors.. In fact i would say is wrong to say that.

An engineer would always design with a safety tolerance such as additional loadings, but never for additional floor. To me adding floor is a very major construction..is not like lego when u can suka2 just stack..

And thats the problem with renovations nowadays..ppl get 'advised' wrongly by hear say or contractors and ended up having problems with the house such as cracks and leaks...Best is get a proper architect/engineer to advise

Of course it's not like Lego I agree. Well this is what I've heard from people in property developer line in my family, and from close friends too. All about tolerances of this and that.

Of course if push tolerance to limit then will have risks and minor faults also. I understand nothing is an exact science. But yeah... when it comes to zoning then things have changed somewhat in KL.

I do miss the kampung atmosphere but I don't want to move to suburbs. I like KL