Does anyone know about this? One of my friend is selling her house and has been told by her sollicitor's office that there is no covenant of light and air on her house. She was asked if she would like to buy one. She didn't fully understand the explanation given by the person who called her (not a lawyer), who didn't seem to understand it all himself. She'd like to know why she should buy one when there wasn't one when she bought the house. Thanks in advance for any help.