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How will Brexit affect house mortgages?
Only you can decide whether it's wise or not given your own personal circumstances. Brexit is certainly a big risk, and noone can really know what will happen yet. The specific worries you mention are certainly valid. Additionally you might find it hard to keep your job or get a new one if the economy turns bad, and in an extreme "no deal" scenario you might find yourself forced to leave - though I think that's very unlikely. House prices could also collapse leaving you in "negative equity". If you're planning on staying in the same location in the UK for a long time, a house tends to be a worthwhile investment, particularly as you always need somewhere to live, so owning it is a "hedge" against prices rising. Even if prices do fall, you do still have somewhere to live. If you're planning on going back to your home country at some point, that reduces the value of owning a house. If you want to reduce your risk, consider getting a mortgage with a long-term fixed rate. There are some available for 10 years, which I'd hope would be enough to get us over most of the Brexit volatility.