Like Satellite TV dishes (when they grew in popularity), were given ‘Permitted Development’ (PD) rights Heat  Pumps are the same. In most cases do not need Planning Permission for an Air Source Heat Pump. As part of the pre-installation checks an assessment should be done to ensure that the installation will meet the PD rights or advise you of what steps may be taken to meet the PD rights if it doesn’t. Sometimes, this is as simple as putting a wooden structure over the heat pump but alternatively you may need to apply to your local authority if you cannot meet the PD rights. If you live in a Conservation Area or your property is Listed, then it is likely you will need Planning approval from your local authority.