There are too many factors which artificially make housing less liquid IMO. In the UK we have stamp duty which means that if I sell and rebuy the exact same ho

There are too many factors which artificially make housing less liquid IMO. In the UK we have stamp duty which means that if I sell and rebuy the exact same house next door I would lose tens of thousands in taxes, on top of all of the (unavoidable) costs like surveys, estate agents etc. In both the US and UK if you can't port your mortgage to a new home then you take a gigantic financial hit to move into the same house next door because your rates go from e.g. 2% to 6% overnight, doubling your mortgage payments. We should definitely build more, but stuff like this also needs to be addressed, no-one is going to downsize if they end up losing most of the money.