"It's a fairly big cliff but we would clamber and slide up and down it. It was a wonderful playground to grow up in ... still is, I imagine."
Completed in 1939, what is still known locally as the Orr house, is an imposing two-storey stuccoed affair, bridging Art Deco and mid-century aesthetics. Consequently, high quality materials are used throughout. The living rooms face the sun and the views, and the bedrooms, while modest in size by 21st-century standards, are comfortable and practical. Jim's room, which now overlooks the Cloud, still has the Canadian Rockies-themed wallpaper it had when he was a child; while Alison's next door has a balcony with jaw-dropping views of the harbour and city, including an unobstructed outlook over the naval base with Rangitoto Island beyond.
What was their parents' bedroom is at the other end of a short hall with a bathroom servicing all three bedrooms.
As Alison says with a laugh, "Even the bathroom has a view. We all slept up here and, on windy nights, it was like being in a lighthouse, nothing between us and the elements except this big strong house."
This main bedroom, with its sea-filled windows on three sides, was replaced by a downstairs version in the 1980s when Stuart and his wife, Betty, reached an age when they needed to live on one level.
A large bedroom and small en suite were built beside the living room, dining room and kitchen, and it was here that they lived until fairly recently.
In the basement is a general storage area called, rather grandly in Alison's opinion, the garden room, plus a workshop, garage and laundry. This area is ripe for development and, even though semi-basement, it still has enough of that miracle outlook to repay the work.
With a heritage order on the building, sensitive modernisation and extension would be called for.
Alison and Jim are very sad to let their childhood home leave the family but, as both are settled elsewhere, it's not practical to hang on to it. "It was a brilliant childhood, we had here," says Alison.
"We'd love to keep it but it is much too big for me and Jim is happy where he is, so it's time for a new family to take it on. It's a magic place."