The Ranch Mine

The Ranch Mine was born out of a seven‑month odyssey across Arizona in 2009, when founders Cavin Costello and Claire sought to uncover the state’s authentic spirit. Everywhere they traveled, they encountered tales of pioneers—ranchers and miners whose grit and vision forged new opportunities in the rugged Southwest. By adopting “The Ranch Mine,” the studio pays tribute to these trailblazers and embraces their legacy of exploration, designing spaces that inspire a similar leap into possibilities beyond the present.

After earning his Master’s in Architecture, Cavin moved sight‑unseen to Phoenix, where he met Claire, a native with a shared passion for shaping the built environment. Undeterred by an uncertain economy, they tackled a major home renovation together, laying the groundwork for projects like the First Phoenix Green Construction Code and custom residences for visionary developers. Their pioneering ethos has since garnered national recognition—2019 HGTV Designer of the Year for “Red Rocks,” a “Future of Architecture” honor from the AIA, features on the NBC Today Show and HGTV, and coverage in leading industry publications—driving The Ranch Mine forward as a beacon for inspired, boundary‑pushing design.

LOCATION: Phoenix, Arizona
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Malapai Tower House / The Ranch Mine

Malapai Tower House / The Ranch Mine

Malapai Tower House rises like a beacon in the heart of the world’s largest contiguous Ponderosa pine forest. Accessible only by a winding dirt road, this three‑story rusted‑steel residence perches atop a gentle volcanic clearing more than…

Lean-Three Home / The Ranch Mine

Lean-Three Retreat / The Ranch Mine

Nestled in the scenic landscape of Durango, Colorado, Lean-Three Retreat by architect Cavin Costello of The Ranch Mine reflects simplicity inspired by lean-to structures. Named “Lean-Three” after its three main volumes, the design balances functionality with a…

Shadowbox Residence / The Ranch Mine

Located near the Rocky Mountains in Whitefish, Montana, the Shadowbox Residence is a remarkable architectural feat by Cavin Costello of The Ranch Mine. Designed as a sanctuary, this residence expertly blends modern luxury with the natural splendor…

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