Whilst some obsessed folks are "pylon spotters" that is by no means the majority opinion. Significant value can be knocked off a property due to pylons, telecom masts or wind turbines and the like. The standard environmental search carried out on residential properties can reveal such matters but it may be wise if you are in any doubt to carry out a more detailed planning search and energy search which should show any such structures within the near vicinity of the property. However such a search is only valid on the date the results are received and may not necessarily show any future development.