Steven Matthews (Wicklow, Green Party) | Oireachtas source

On vertical extensions and building with wood, where a conventional block building is built on a foundation, the foundations may not be suitable for adding two more storeys onto the concrete building. A vertical extension built with timber would be lighter so the foundations may be suitable. Does that run foul of current regulations or standards? Could I put two timber-built storeys on top of two block-built storeys or would I be creating a headache for myself?