I am writing to formally complain about the unacceptable state of the shared alleyway between my property at [Your Address] and your property, which has now been converted into an HMO. Following recent construction work at your property, the alleyway has been disgracefully used as a dumping ground for construction waste and discarded materials.<br/><br/>Currently, the alleyway is littered with old mattresses, a sink, a bath, various metals, wood, and other construction debris. This is not only an eyesore but also a serious hazard, obstructing access and creating potential health and safety risks. It is completely unacceptable that my property and daily life are being affected by your failure to properly dispose of waste resulting from work carried out on your premises.<br/><br/>I demand that you take immediate action to have all waste removed at your expense and ensure that this does not happen again in the future. If this matter is not resolved within [reasonable timeframe, e.g., 7 days], I will have no choice but to escalate the matter to the local council, environmental health authorities, and, if necessary, legal channels.<br/>