For a new build, the first step in grinding is usually undertaken before the framing is erected. However, if this is not possible then it can be carried out before the GIB board is fixed. The final steps are completed at the end of the painting or end of the GIB stopping before the skirting is fixed.
Make sure your concrete pour team are good and provide you as even a finish as possible otherwise when the time comes to grind the floor, they will have a tough time getting it even.
For renovations, older concrete floors can be polished. For example, a process would be that a special chemical is used to harden the floor. Then a solution is used to pit fill the floor to a glassy finish (no holes). Then the floor is polished and finally a stain protection can be applied to give the stones their natural hues.
Polishing your standard foundation floor is about equivalent to an expensive carpet or a mid-range solid timber overlay. Cost from $50 – $130 per meter square.