Possible Clues:

• Summerhouse with view
• Summerhouse - pavilion with view
• Start to take a long, hard look at what's put up in the garden (6)
• Garden summer-house with wide view
• Summerhouse with views
• Roofed structure in the garden
• ...
• Stare at old boy coming back from building in garden
• Garden sumer-house with wide view
• Metrical feet