Over the years, the Walls have gradually made mainly cosmetic changes to the house, being careful to largely retain its original structure and features including panelled doors, built-in alcoves and simple but striking leadlight windows.
Dated wallpaper has been replaced with fresh white painted walls, carpeting has been lifted to reveal rimu floorboards and leadlights have been repaired or replaced where necessary.
"We have just pottered along and made changes at our own pace to make sure that they are done properly," says Lynton, who has done much of the renovations himself.
As well as rewiring the whole house, the Walls have added skylights including a large one in the south-facing kitchen and one in the large upstairs bedroom. Other improvements include a heat pump and HRV system, flued gas heating and a Jetmaster wood-burning fire in the large formal lounge downstairs. Most recently, two bathrooms - both downstairs - have also been completely renovated.
For its 160sq m it has a surprising number of separate spaces. On the ground floor are the master bedroom, main lounge, kitchen, adjoining dining room and second living room, two bathrooms and two single bedrooms - one of them directly off the lounge.
A small spiral staircase, which was added in the 1970s, leads upstairs to the former attic, which is now converted into two rooms - a small study and a large fourth bedroom/lounge that is an ideal teenage retreat.
The rear of the house steps down to a large, fenced and walled lower lawn.
The Walls have loved living in Mt Eden because it is so central, has been close to their children's schools and they have had great neighbours. "The location has been a real pull and it is has been a bit of an emotional roller coaster deciding to sell up after being here for so long," says Kim.
The Walls have opted for a complete change, downsizing to a new, lock-up-and-leave terraced house in Stonefields so they can travel more now that their children are older.