Introducing The Boulders: A serene haven of energy efficiency and modern elegance

Nestled within the captivating landscape of Cromwell, New Zealand, The Boulders stands as a testament to eHaus' commitment to redefining the way we live. This project was completed in 2023 and epitomises the perfect fusion of energy efficient modern design, and a deep connection with nature.

Situated 480 meters above sea level, halfway up a rough hill slope that rises from Lake Dunstan to the Dunstan mountains, The Boulders is a haven for those seeking a peaceful, homely, and energy-efficient dwelling. The rugged location, whilst beautiful, presented the eHaus Design team with some unique challenges. The Resource Consent stipulated that the dwelling could not be visible from the lake, the colours had to fit the environment, and it had to meet the Building Code for the Extra High Wind Zone and snowfalls in Otago, yet, the house still needed to take advantage of the stunning views the elevation afforded. With this in mind, the final design inspiration was drawn from the early miner's basic shelters which were carved into the banks with a sloping canvas front. The orientation allowed for focused views of the lake and surrounding ranges. The use of roof overhangs and set-back windows helps to protect the interior spaces from the extreme climate challenges throughout the seasons.

The Boulders boasts three bedrooms, with the master featuring a spacious walk-in robe and ensuite, providing luxurious comfort to its inhabitants. A separate snug or reading room offers a cozy retreat, while the open-plan living and dining areas create a seamless flow, inviting in natural light and panoramic views of Lake Dunstan, 'Sugar Loaf,' and the Pisa Mountain Range.

The architectural details of The Boulders are nothing short of immaculate and have been implemented with precision and careful consideration. Abodo sand decking, bespoke powder-coated perforated aluminium screens on exterior windows, and a striking combination of Abodo charred cladding and schist contribute to the home's aesthetic appeal. The level of detail is evident in the negative detailing around interior doors, the kitchen fit-out, and the suspended layered ceiling designed to represent schist. The sloping external walls not only add to the visual interest but also seamlessly integrate the home into the rugged landscape.

The Boulders is not just a dwelling; it's a retreat that harmonises with its surroundings while embracing the principles of energy efficiency and modern living.

Notably, The Boulders adheres to the eHaus Euro low energy performance standard, setting a benchmark for energy efficiency in residential construction. This eHaus masterpiece offers a perfect blend of form and function, catering to the discerning preferences of the owners during the summer months, and providing a tranquil rental space for tourists and tenants throughout the rest of the year. As with all eHaus projects, The Boulders reflects the brand's dedication to creating homes that prioritise design, comfort, health, and energy efficiency—a true embodiment of the eHaus commitment to redefining the way we live.

Design Components

Glazing: Triple Glazed Argon Ug value 0.6 W/(m²K) G Value 53%

Window Joinery Frame: Eco Wood-Alu ST 68 U-value of 1.1 W/(m²K)

Floor: Fully insulated concrete pad with a U-value of 0.182 W/(m²K)

Wall: 140mm timber frame U-value of 0.238 W/(m²K)

Roof: Double layer of fibreglass insulation with a U-value of 0.137

Ventilation: Zehnder ComfoAir Q350 MHRV

Performance Specs

Heating Demand: 20.3 kWh/m²/yr

Heating Load: 15.9W/m²

TFA: 170.9

Form Factor: 0.28

Air Leakage@50Pa: 0.3

PER demand: 43.0 kWh/m²/yr