The charges were for the cleanliness of the house and gardening not for any maintenance as you suggest. We negotiated between yourself and the landlord and you settled at an agreed figure. If you were not happy why did you settle at this figure and not raise a dispute with the regulatory body (TDS). I imagine this is because you know this was fair and reasonable and that you hadn't returned the property in a reasonable state. The deposit charges were agreed at around 35% of the deposit with the landlord having to cover the costs for the rest of the cleaning. The deposit was returned to you within a reasonable timescale considering the level of negotiation undertaken.