Yes it's about 1,500m2.somebody had mentioned that rather large area and I was impressed by the magnitude, couldn't be bothered to calculate it, and it does grab the attention
1,500 to 2,000 is about right in an off the top of the head sum.
Btw we really have used 10km of timber.
I'll be asking for recommended paint brands soon. Not expecting it to be farrow and ball.