I have a small Edwardian terrace with lots of original features so I want an extension to the rear which is in keeping. I don’t want a conservatory because there would be no flow with the rest of the house. I don’t want a bog standard box with tiled roof and two veluxes. I think an orangery would be over the top. However, would a simple extension with brick side walls and either a lantern roof or a sloping glass roof with bifold glass doors to the garden work? We are north east facing so need to maximise light. If we went full width we would have to move the soils pipe, down pipe and outside drain so don’t know if that would be a huge expensive problem.