My thought is, that your idea is basically a bit of a downsize plan, and I wonder if you’re too you g, because once you do it, it can be hard to upsize, if you ever want to.
some people move to a cheaper area because they can’t afford to buy somewhere else. That makes sense. However it’s not your position.
You could move to a cheaper area and buy a small property outright and have zero mortgage. That would be a nice feeling to have now. However, if you ever wanted to buy in an expensive area or to upsize from a small flat to a famiky house, it would be much harder because house prices would have risen more than proportionately in the mire expensive areas and for bigger properties. You can end up ‘trapped’. That’s fine when downsizing in older age to free up equity or to help kids out or to retire, but you are in your 30s. This is the time to be buying with a mortgage (doesn’t have to be huge) and building up something for the future.
Most areas will be cheaper than Jersey, but you don’t have to look at a cheap area. Don’t go cheap, just to be mortgage free at your age. As a PP said, cheap areas often have some kind of downsides…otherwise they wouldn’t have remained cheap. Don’t go tiny just to be mortgage free at your age. So don’t be looking at 1 bed flats in cheap places as you can buy without a mortgage and live mortgage and stress free.
Instead, think a bit more long term. Think about places that are places you like and property sizes which give you some flexibility and which would need a mortgage but a manageable one, that you can afford on a decent, but lower income than you have now. Expect to keep working until at least your mid 50s, so expect to keep paying a mortgage until mid 40s at earliest and probably later. This is fine.
If life is feeling stressful and mortgage free tiny property is feeling attractive, you need to think about why you feel like this. This is what needs addressing. Maybe you do need a lower powered ir less stressful job or perhaps other issues need addressing. This should be your first priority, not looking for a cheap area and property you can afford mortgage free as the solution.
Keep your options open. Buying is a good idea. Buying somewhere that means if you want to move in future, you’d have lots of options about where else to go, is a good idea. Tiny flat in cheap area doesn’t give you that and you can afford more. Expect to have a mortgage of some size - even if quite short term and small, and that you won’t own outright for a good few years.