DH and I are both self-employed. We have a house in London that we're hoping to sell so we can buy a small flat in London as well as a house somewhere cheaper. (The flat is for both of us to use when we're in London for work, not a rental property.) Even though our cost of living should go down when we move, I am aware that we'll be spending more on other things (I'll need a car, for instance, which I don't at the moment) and there may be other expenses I haven't foreseen. I also don't want to buy a much worse house than the one we live in at the moment, having endured various problems with it over the last five years. I don't mind a smaller house in the right location, but I don't want an absolute wreck! And I am wary of having very high monthly financial commitments. We aren't big borrowers, because of being self-employed - we prefer to save and spend what we have.
Because we're both self-employed we are fairly flexible about how and when we work but our income fluctuates a fair bit from month to month. Mine tends to be in lump sums two or three times a year, but I've been earning the same amount for the last four or five years. With an eye to managing monthly outgoings I was wondering about getting an interest-only mortgage on the London property and paying off the actual loan as and when I can - or just selling it on if and when we don't need it anymore. Does anyone have any experience of this, or any advice? Renting looks as if it would be more expensive than a repayment mortgage!