Although less than 1% of tenancies end up in an official deposit dispute, the biggest issue at the end of residential tenancies is cleanliness. And it seems from research that the problem is often down to mis-communication between agents, landlords and tenants. In a nutshell how clean is clean? Well it is down to what is specified in writing, and for that reason that is why we at Key One have been issuing written standards to tenants for the last five years or so.