Related Clues:

• Appends
• Compounds
• Annexes
• Includes
• Spreads
• Expands
• Builds a new room, say
• Makes the house bigger
• Widens
• Builds an extension
• Attaches to the house
• Benjamin is about to be the one that makes the street wider (8)t
• Puts more of a divine, on your boy
• Develops a way through mountains
• Makes a wing, say