Just wondering if I am completely out of touch here. My sister emailed me today with a link to a house she is buying. They are moving from a house they have just sold for £250k, a pretty ordinary three bed semi. The new house is a detached five bed, which they are buying for £560k. I knew they wanted to move to something a bit more "forever home" but am honestly shocked at the price. Both work in the public sector, he in a managerial role in the health field on about £70k and she as a lecturer on about £50k and they are both 40. They have accumulated about £120k worth of equity in the old house. Yes, I know it isn't really any of my business but I was surprised that they are taking on this kind of debt. I wouldn't be able to sleep at night and the combined income of me and DH is only a bit lower. AIBU or is this a massive mortgage?