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The Ranch Mine


About Us

We are a husband & wife led architecture firm that specializes in designing homes for people with the pioneer spirit, the dreamers and seekers who see home as a place and an idea. Our goal is to help you create a home that will root you in your community, provoke curiosity and exploration, and embolden you to do more of what you love. Equipped with our national award-winning experience and your desires, we design homes to honor the past, challenge the norm, and inspire the future. The majority of our work is comprised of new build houses and significant renovations and additions. Our Name: We are often asked how we came up with our company name, The Ranch Mine. Before we formed our company back in 2010, we spent 7 months traveling around Arizona, exploring the rich history of our state. During these trips, a common thread started to emerge: the pioneer spirit. Everywhere we went we heard stories and saw manifestations of the driven, impassioned people in search of a better life. This spirit is still alive and well today. We chose our name to honor those that have come before us, the humble ranchers and miners, who have paved the way for our opportunities for prosperity today, and to serve as inspiration to design spaces that afford us the opportunity to imagine what’s beyond what we see in the present so we can strive for new experiences. Our Story: In 2009, Cavin Costello received his Masters degree in Architecture and made the drive to Phoenix, Arizona sight unseen, inspired by the complexities and opportunities to be had in the rapidly urbanizing southwest. He had not yet been a full day in Phoenix when he met Claire Costello, then Claire Aton, a Phoenix native looking to make the most of her recent move back home. The two quickly bonded over their ideals of the built environment, how to improve upon it and its ability to influence. Not settling for a hard hit economy to dictate their next move, the duo decided to act. So, they bought a fixer upper and experienced first hand the trials and tribulations of a major renovation. The two continued paving their own path developing the First Phoenix Green Construction Code project, designing for visionary real estate developers, and creating inspired homes for unique homeowners like you.

Services Provided

3D Rendering, Accessory Dwelling Units (ADUs), Architectural Design, Architectural Drawings, Barn Design & Construction, Bathroom Design, Building Design, Custom Home, Energy-Efficient Homes, Floor Plans, Green Building, Guesthouse Design & Construction, Home Additions, Home Extensions, Home Remodeling, House Plans, Kitchen Design, Kitchen Remodeling, Landscape Plans, New Home Construction, Outdoor Kitchen Design, Space Planning, Sustainable Design, Custom Homes, Construction Drawings

Areas Served

Mesa, Paradise Valley, Phoenix, Scottsdale, Tempe, Cave Creek, Carefree, Tucson, Flagstaff, Sedona, Chandler, Gilbert, Peoria, Prescott


2019 HGTV Designer of the Year Winner, Before + After - 2015 AIA | Houzz "Future of Architecture" Winner - Luxe Magazine: 10 Talented Architects Leading the Way 2018 - Dwell Magazine Top 20 Homes in 2017 - 2012 NAHB Green Remodel of the Year - NBC Today Show Best Homes Across the Country

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Contact The Ranch Mine
4340 E Indian School Rd. Ste. 21552
Phoenix, AZ 85018
License Number 60672