The Book Next Door is a lovely series written by Australian Claire Harris. They are suitable for adults or young adults, and are written with the Australian context in mind, which is easily transferrable to the NZ context.
Each reader has a Teacher's resource book which goes with it, that has photocipiable worksheets and activity ideas to get the most out of each chapter of the books. They range from Beginner to Pre-Intermediate level.
See www.TheBookNextDoor.com for more information.
The Language Fuel Resource Room is the proud NZ supplier for these books.