The Ranch Mine, comprised of Cavin and Claire Costello, is a national award-winning design firm that specializes in designing contextually modern homes in historic and mid-century neighborhoods in Arizona. The majority of our work is comprised of infill houses (new houses on vacant lots in existing neighborhoods) and significant renovations and additions to modest ranch homes, mid-century modern homes and historic properties. Our expertise in combining the character found in older homes and neighborhoods with today's modern desert living uniquely enables us to help you create a one of a kind home that inspires your everyday and contributes to the betterment of your community.

Phoenix, like any other city, has a reputation, a calling card, some easy ways for people to identify it. For a long time the design and development community has been identified as beige, over run with sprawl and speculation, and littered with an obsession for anything perceived as standard or safe. This I.D. did not bring itself into existence. We all hold a stake in the state of our cultural environment. For this reason, we created The Ranch Mine.

Everything we do is grounded in empowering you to be a positive and influential force in the development of your city, and it all starts at home. Home is the foundation of each and every day. If it is strong and inspired, we can carry those qualities into our communities.

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. There 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 redesign.

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. The Ranch Mine has many more exciting updates so stay tuned by following us at where we consistently post progress updates on our current projects and happenings!

Service Provided
VACANT LOT: INFILL HOUSE: Complete new house design on a vacant lot
NEW-TO-YOU HOME: Renovation and addition design for a "fixer-upper"
CURRENT HOME: Renovation and addition design for your existing house

Our design services include interior, exterior and landscape, as we believe the best projects flow seamlessly, indoor to outdoor

Area Served
Phoenix, Scottsdale, Cave Creek, Paradise Valley, Carefree, Prescott, Sedona, Flagstaff

Certification and Awards
Best Emerging Creative Duo by Best of Phoenix 2013 Awards - 1st ever Phoenix Green Construction Code Project - 2012 NAHB Green Remodel of the Year - Top 35 Arizona Entrepreneurs 35 and Younger - Best Homes Across the Country for $250k or Less by the NBC Today Show
Contact: Claire Costello
Location: 4340 E Indian School Rd. Ste. 21552
Phoenix, AZ 85018
Commented: Flooring? Thanks! It is a new, poured concrete slab with a clear sealer
October 5, 2014 in Photo Questions  
Commented: Love the area rug - who is the MFR? Thanks! I don't remember, but I'll shoot a note to the homeowners and see if they are able to come up with it. I'll let you know if I find out
September 18, 2014 in Photo Questions  
Commented: Paint color Thanks! Dunn Edwards white DEW380
September 15, 2014 in Photo Questions  
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October 7, 2014
The Ranch Mine commented on a discussion in Photo Questions: Flooring?
October 5, 2014
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