Taxing the sellers is ridiculous.
My story:
DH and I completed on our current home earlier this year. 425k, so whilst not at the 500k mark, we're not too far off it (and therefore it is a possibility that we could be there at some point). We paid £11,250 in stamp duty (not first time buyers).
4 bed detached - our forever home. DH works from home, and so uses the smallest bedroom as his office. 2 spare bedrooms - 1 double, and 1 single (could fit double bed and nothing else in the room, or a single bed with wardrobe and desk).
We have unexplained infertility. We are considering adoption - we are currently pre-stage 1 with this, and so very early days. We understand that the adoption process may not work out for us.
DH and I have discussed both approval and non-approval of adoption. If we are approved, and wr get a child, we will stay put. This is a lovely home and perfect for a child to grow up in.
If we do not end up with a child, we have also discussed downsizing in 5 - 10 years. We are able to cover the mortgage and all other costs for our current house, but if it ends up being just the two of us (a very real possibilty), we could buy a 2 bedroom house pretty much outright, and obviously have the advantages that come with being mortgage free.
But- if it costs us to SELL (after we've already paid stamp duty on this property), we may decide to stay put. At the end of the day, we can afford our current 4 bed, and if it's going to cost us to move, why should we? (I don't know the ins and outs of this new tax yet, but asse that any stamp duty we would pay to buy a 2 bed would be less than this new tax to sell a 4 bed).