Rebecca Marvin's application for the removal of existing conservatory and utility room to construct a two storey side extension incorporating hip to gable roof alterations was permitted.

Source: https://www.hampshirechronicle.co.uk/news/23249106.winchester-city-council-planning-decisons/?ref=rss

To see how it works, you have to climb another flight of stairs to the attic under the gable roof.

Source: https://houstonianonline.com/isinga-planetarium-a-wonder-of-the-world-of-great-beauty-in-a-house-on-the-frisian-channel/