The house has a narrow, linear footprint that runs with the contours across the steeply sloping (1:3) building envelope. (When viewed from the road above, the house appears much bigger than it actually. In fact, it's little more than one-room deep.)
Building across rather than down the slope not only reduced costs by minimising excavation, it ensured the house could be 'embedded' into the landscape and take full advantage of the bush views above and below the envelope.
The choice of materials - concrete, brick and steel - was as much about durability as it was aesthetics.
"We made the decision very early to go down the path of totally non-combustible materials, including the roof," Nimmo says.
"It meant we were able to retain the trees close to the house that otherwise would have had to be removed.
"There's no reason why this house won't be standing in 100 years."
The ground floor is a concrete slab on piers. On the downside of the slope, the edge of the slab wraps around exposed sandstone outcrops and kinks outwards at its northern end to create a large, open verandah space. (This kink is mirrored on the first-floor slab, creating a similar open space.) The corners of the slabs are rounded to soften their visual impact.