The Co-Operative Bank has released figures showing that one fifth of its recent buy-to-let business has come from “accidental landlords” – home owners forced into letting out their property because they have been unable to sell it and need no move. The phenomenon is generating something of a mini-boom in buy-to-let as more and more first time landlords enter the market. For the moment, this seems sustainable - research from ARLA shows that demand from tenants is still outstripping supply, meaning that in most parts of the country finding a tenant is unlikely to be a problem. However, home owners have been warned about the danger of taking on additional debt in an uncertain economic climate. A drop in rents or a rise in interest rates could leave many accidental landlords in a vulnerable position. In some cases, home owners would be advised to sell up, rather than let, even if that means selling at a discounted price.