The buy-to-let market could be a shining light when it comes to property investment. In fact, according to research, average UK rents have increased by 13.6% since 2009; and in addition to this, the latest Census figures show that the proportion of UK households renting is now at 36% compared to 31% ten years ago . So, if you have the money to invest in property, choosing the buy-to-let market could be the way to go.