Confluence House / Cushing Terrell

Architects: Cushing Terrell
Area: 2,282 ft² (main house); 946 ft² (guest house)
Year: 2023
Photography: Karl Neumann
Lead Architects: David Koel, Fran Quiram
Architects Team: David Koel, Fran Quiram, Wes Baumgartner, Carl Maehl, Gerry Nichols-Pagel
Design Team: Cushing Terrell (Architecture, Interior Design, Landscape Architecture, Mechanical and Electrical Engineering, Lighting Design)
Contractor: Martel Construction
Structural Engineering: Beaudette Consulting Engineering
Civil Engineering: TD&H
Geotechnical Engineering: CMG
Materials: Sierra Pacific Windows, Montana Rockworks stone, LG Viatera solid surface countertops, Town & Country Luxury Fireplaces, Glacier Steel standing seam metal roof
Client: Private
City: Whitefish, Montana
Country: United States

Confluence House in Whitefish, Montana, is a private retreat set on ten acres where two rivers converge, designed by Cushing Terrell as both a family haven and a fly-fishing escape. The residence is composed of three volumes arranged in a triangular layout: a main house, a guest house, and a utility structure, all oriented to respond to the contours of the river bluffs. The architecture emphasises minimal intrusion into the landscape, with flat roofs that dissolve into the horizon and a central courtyard landscaped with native species and a rainwater-fed stream bed. Locally sourced wood and stone clad the exterior, while large energy-efficient windows frame panoramic views of rivers, mountains, and valleys. Interior finishes reference the geology of the site with polished concrete floors and whitewashed Douglas fir ceilings. Solar panels on the utility building underscore the home’s environmental integration. With efficient spatial planning and outdoor connections, Confluence House reflects a balance of privacy, community, and ecological sensitivity.

I love it when thought and intention extend to the smallest details. The more someone is in and experiences a space, the more they see that each element—from the overall concept to the color palette, light fixtures, pattern on the carpet, door handles, hinges, art, books, and knick-knacks—reinforces the idea and imbues a particular feeling.
Interview with Sandi Rudy of Cushing Terrell

Confluence House takes its name from the geographical condition that defines its setting: the merging of two rivers on the outskirts of Whitefish, Montana. Rather than imposing itself on this landscape, the residence is carefully sited to echo the terrain and natural rhythms of the river basin. Its composition of three distinct yet interconnected structures allows the architecture to respond to topography while establishing a courtyard that becomes both threshold and gathering space.

The main house, aligned with the western bluff, anchors the composition with a program that balances domestic comfort and contemplative retreat. Without the presence of hallways, the plan emphasizes directness and efficiency, each room unfolding into the next while maintaining visual and spatial connection to the surrounding landscape. The guest house, positioned along the eastern bluff, is detached to ensure privacy yet linked through a covered porch that also frames an outdoor living space, adaptable for film screenings and seasonal gatherings.

The third volume, a utility structure recalling the region’s railway maintenance sheds, mediates between architecture and infrastructure. Its solar array signals a contemporary approach to sustainability, while its placement shields the courtyard from the access road, ensuring both privacy and a sense of enclosure. The courtyard itself is conceived as an ecological extension of the natural surroundings, planted with drought-resistant species and punctuated by boulders and a rain-fed stream bed that ties the site back to the hydrological forces of the rivers below.

Material selection further anchors the project in place. Dark-stained local wood and Montana stone form a tactile dialogue with the environment, while a metal roof provides resilience against the climate. Expansive glazing brings the outside in, turning the living spaces into observatories of shifting light and distant horizons. Inside, polished concrete floors recall the river’s gravel beds, and whitewashed Douglas fir ceilings soften the atmosphere, creating an understated palette that heightens the connection to nature.

Confluence House emerges as both refuge and lens, designed to heighten awareness of the land and waters that define its context. Through a synthesis of efficiency, material integrity, and landscape integration, Cushing Terrell has created a residence that belongs as much to the rivers and bluffs as it does to its inhabitants.