New build painting cost

I'm in the process of building my house and am just enquiring what i would expect to pay for painting of the house including materials. This is for ceilings, walls and window boards only. The house is almost 2000 sq foot and is to be painted in the same colour throughout on walls and the ceilings are to be painted white

Just after completing this on our house 4,200sqft spray the complete interior white finish ceilings and undercoat to all walls paint cost €780 16 buckets of 10litre matt emulsion, painter €400 and sprayer €100