"a neat bijou townhouse, faced with shining white stucco so it looked like an iced cake. It had two storeys and a delightful attic-room with a gable window which Dot had claimed."
The address itself is entirely fictional and in the TV series Wardlow at 114 Park Drive, Parkville is used for the outside shots of the house.
The inside shots of the house are filmed on a sound stage and the rooms are meticulously designed to match the descriptions in the books. Which is explained more in the video below: