We are extending across the back of the house about 4m deep but our garden slopes away from the house and is not huge. This means that we cant really build a deck or patio at the same height as the house. We will have to step down between 60-80cm... Every article goes on and on about flow between house and garden but we won't have that level continuity. Has anyone else got this problem and has it worked esp with bifold doors? Or could do a couple of stps down internally from house to extension instead? But is 'flow' (starting to hate that word!) much more important inside the house than worrying about the outside?! Any ideas or opinions gratefully received thanks!