I live on the end of a terrace of three houses, and my home is worth £220k. I really want to move to a detached house because my neighbours annoy me and I'm sick of living on top of other people. Sorry if that sounds snobby 
I've been looking at detached houses and to get the same square footage as I have now, in the same area, I'd be looking at 300k+! I can't justify spending that much more unless it would gain me more internal space as well. Please either convince me to embrace my terraced existence or tell me why living in a detached house is worth so much more £££!