Lean-to conservatories are usually rectangular with a roof that leans on to the main property (hence their name). They have clean, simple lines giving them a modern, uncomplicated look and making them suitable for a wide range of house styles. In particular, they are the ideal choice for bungalows or other homes where the roof has low eaves. Lean-to conservatories are also known as sunrooms and studio rooms.
The lean-to allows you to create a space that might be long and narrow enabling you fit it in an area where other designs cannot fit.