We are looking at building a single story extension which will be used as a games room whilst the kids are teenagers, then a garden room in later life. Does anyone have a full sized table tennis table (2.74m by 1.525m) and can advise how much space you need around the table? Our first drawings were 4.35m width (this can't be changed) by 3.7m length but we are concerned that this isn't big enough. Some websites recommend you need1.5 - 2m at each end but this seems excessive??