Karuna House

A single-family home on a south-facing sloped site overlooking the Willamette Valley, Karuna House sets the standard for sustainable residential buildings.

Project Details

Location

Newberg, OR

Year Completed

2013

Project Size

3,500 sq. ft.

Certifications

Passive House PHIUS+, LEED Platinum for Homes, MINERGIE-P-ECO, & Net Zero Home

Sustainability

The home’s super-insulated envelope is designed to be airtight, decreasing the energy needed to heat and cool the home by 90% compared to a typical home. Karuna House combines an advanced building enclosure with optimized solar design to drive energy loads to very low levels. Based on the first year of operation, a solar photovoltaic array of less than 10 kilowatts provides the remaining energy needs. Solar heat gain is controlled by exterior operable blinds that shade the triple-glazed windows. Interior walls are finished with lime plaster, which is 100% natural and VOC-free.

Awards

2015 National Institute of Building Science's Beyond Green Merit Award, High Performance Buildings Category
2014 GreenBuilder Magazine Home of the Year Award, Best Building Science Category
2014 Daily Journal of Commerce Top Projects, Finalist
2013 Portland Business Journal Honoree, Innovation in Sustainability Awards, Energy Category

Humble Footprint, Bold Presence

A high-design, high-performance building, Karuna House set an ambitious goal to meet a combination of the world’s most demanding green building certifications. Located on a hilltop overlooking vineyards in Yamhill County, Oregon, the house was the first building in the world to earn Passive House (PHIUS+), Minergie-P-ECO, and LEED for Homes Platinum certifications.

Demarcating Activity

Two towers anchor the Karuna House to the earth, marking the location of double-height spaces and vertical circulation. Wood and glass volumes appear to alternately cling to and slide past the towers. Sited in an area famous for its rust-colored soil, the home’s exterior palette is composed of materials and colors that reflect the tones of its surroundings.

Clean Design

With clean lines and a color/material palette inspired by the Pacific Northwest, Karuna House proves that high design and high-performance can coexist.

Form Meets Function

While achieving the project’s sustainability goals, the home successfully maintains a rigorous form that responds to the client’s programmatic needs. An open floor plan facilitates social interaction within the home, and carefully situated windows frame views to the outside. Interior finishes cast a warm minimalism saturated in natural light, allowing the owner’s eclectic art collection to take center stage.

Thoughtful Landscaping

Simple, native, drought-resistant landscaping blends the building within its agricultural context.

Comfort in Performance

Karuna House boasts superior thermal comfort, solidity, and quiet created by the structure’s super-insulated construction. Yet, it maintains an indoor-outdoor connection through a continuous supply of fresh air, natural daylighting, and views to the surrounding landscape via high-performing windows.