My family and I are planning to do a loft extension to our home. Our house is a two-storey house with four rooms. We are planning to extend the house because we are expecting an increase in our family so we will need more space, and it does not seem worthwhile to buy another house and move. We are currently negotiating with one builder, Herko Ltd. Maybe you have come across it, maybe you have some feedback, maybe you have experience with loft extensions in general? Interested in the full advice as it will help us make a better decision, thank you