For reference it would not be taking any land from a neighbouring house. We have wasted land about 5 meters wide behind our house followed by a big hill then a line of trees and then a train track. We purchased a 4meter swimming pool to go into the area behind the shed but we are about 4 inches short on the count of legs need a bit of extra space. When they tell you measurements it should really be for the whole area needed. I have 3 fence posts in my garden would you if you were me move the middle one back a few inches to allow for the pool legs. Our garden at the back slopes and gets shorter from the left to the right if the line had been straight it would of been fine. The land behind cannot be used for building on because its a huge hill follewed by train line so the only time anyone ever goes round there is the maintenance team to strim it every few months or usually me to fetch the bloody football when the kids kick it over which is a 15 minute walk to the area to access it. If I did move my fence back a couple inches should I put in a gate to fetch the ball. Had to go round 3 times today to fetch the bloody thing.