I also wonder how the contractor install the RC pile? bringing the pilinng machine into the site?  

Hi,
Would like to ask related question to this.
My house extension is as below. The areas I marked with yellow will be double storey extension, the others are not, but will support RC slab. Contractor plan for piling at point A, B and some other points further away. Problem is, neighbour has kitchen extension that is next to point A( he didn't do piling). I am worried piling will cause cracks in my neighbour's wall. Contractor says he will do cantilever from neighbour's footing pad. But I am still worried. Can I get away with not doing piling for point A, only wide footing?

What is KLF?
Between B and 4, there is another piling point. There is soil settling in the region, as the car porch area also had some tiles issue. So contractor gonna go ahead with piling (with cantilever at point A). I am just praying the damage, if it does occur,  will not be major.