I was wondering because I find ours are quite low, we live in Germany. We rent quite cheaply for the centre of Berlin and the extra costs aren't huge. That is water, heating and electricity. The costs for rubbish colection, cleaner for building and garden are shared by all 8 flats so they are minimal. We hope to move to the UK next year and I think we might be in for a shock especially if we rent. We have 2 kids.