The listing ad describes the home as a masterpiece without peer in terms of design and craftsmanship.
"Inside you'll discover an unfolding narrative of multiple living spaces, concealed rooms and clever Zen-like courtyards. The statement kitchen is cleverly finished within the overarching theme of random timber battening, and along with the outdoor fireplace and gathering zone, pool and spa, offers uninterrupted sea views and a tranquil sense of engagement with the ebb and flow of the tide."
The property has featured in design and architecture magazines. A 2007 article said the darkly clad house was a reference to seaside baches of the 1950s, with the sunken lounge a nod to later period conversation pits.
It bucked the trend towards open-plan living, with the owners telling designers they wanted "a dwelling full of different and inviting spaces".
Tenders close on April 9.
34 Rawene Ave, Westmere
•Four-bedroom, two-bathroom home designed by Stevens Lawson Architects.
•Judged NZ Home & Entertaining Home of the Year winner in 2007.
•Valued at $6.1 million.
•Sits on 1183sq m of land and boasts a private boat ramp and WWII winch.