Owner and principal designer of CeTerra Accents & Interiors has spent the tenure of her career working in many facets of the design industry including small and large-scale residential and commercial projects. While Katherine’s experience encompasses many design styles, she exhibits a specialty in an organic, contemporary southwest aesthetic.
Katherine, a native of Arizona, was born and raised in Flagstaff. During her adolescence, she spent her time hiking and biking in the beautiful mountainous surroundings as well as many weekends at Lake Powell with her family.
Katherine is a graduate of Northern Arizona University where she obtained her Bachelors of Art in Art History and Bachelors of Science in Interior Design with a minor in French. While at NAU, she served as president of the Beta Omega Chapter of Gamma Phi Beta International Sorority and participated in multiple campus organizations. To expand her knowledge in French studies, Katherine attended Institute de Touraine, in Tour, France, Laval University, in Quebec, Canada, and University of Lyon, in Lyon, France. Her final year at NAU included a summer in China where she studied culture and art history at Nanjing, Qufu, and Xi’an Universities.
She is also a graduate of Arizona State University where she completed her Masters of Science in Design with a Certificate in Museum Studies. During her time at ASU, she interned at the Phoenix Art Museum, and published her master’s thesis, Riordan Mansion: An Arts and Crafts Duplex, 2010. As a result of her passion for higher education, Katherine regularly instructs design classes at local colleges.
Katherine is a professional member of the American Society of Interior Designers (ASID), is NCIDQ certified (No. 28198), and active among many local and regional professional and academic interior design networks. Her award winning work has been featured in Phoenix Home and Garden Magazine, Luxe Magazine and Interior’s Scottsdale.
In addition to her work in Arizona, Katherine has traveled extensively throughout Africa, Asia, Western Europe, and the United Kingdom, which is evident in her ability to reference and incorporate multiple design elements into her vision. In her spare time, Katherine enjoys traveling, museums, cycling, reading, and spending time with her husband, Aaron, son, Weslee, her daughter Emilee, and miniature dachshunds, Lola and Ollie.
Aaron Mueller
Co-Owner & Director of Operations
Aaron has a very diverse background working in agriculture, automotive, commercial construction, photovoltaics, and franchising. He brings with him 15 years of commercial construction experience at a management level providing a solid understanding of the construction industry along with skills to support Katherine Mueller Design and its growth.
Aaron grew up working on a small date farm in Southern California where he became a mechanic and heavy equipment operator by the time he was 18 years of age. After graduating from Northern Arizona University with degrees in Construction Management and Business Administration, he began his career working for a commercial general contractor in Flagstaff and eventually transferred to Phoenix as the company expanded. In 2011 Aaron acquired his LEED AP BD+C certification furthering his understanding of sustainable construction practices. He’s worked in many different aspects of the construction industry from the director of design and construction for a national franchise to managing the design of utility-scale photovoltaic projects constructed throughout Arizona. He is a very process-driven individual that takes pride in everything he does.
Aaron is the father of Weslee and Emilee Mueller, and Katherine Mueller’s husband. As a child, he helped his father work on cars and farm equipment and developed a passion for anything with an engine. In 2015 he obtained his Airman’s Certificate and looks forward to getting in the air any chance he gets. You’ll typically catch him at a local car show on the weekends if he’s not with his family
Michele Puchi
Showroom Manager, Product Curator, & Visual Stylist
Originally from the Chicago area, Michele moved to Arizona to attend Arizona State University, where she earned a Bachelor’s Degree in Studio Art.
Her career spans more than 35 years in creative roles, including contemporary fine art sales, visual merchandising, vacation rental home staging, and custom furniture design in Baja California, Mexico. She also spent 18 years working alongside her parents at their family-owned Ace Hardware store and garden center in Sedona, where she developed a strong work ethic and dedication for exceptional customer service.
At CeTerra, Michele oversees showroom operations, product purchasing, merchandising, and custom floral design. Her passion for beautiful interiors and attention to detail as a visual stylist help create spaces that feel thoughtful, refined, and uniquely tailored to each client.
Outside of work, Michele enjoys traveling, photography, DIY projects, fitness, and spending time with her son, Jeremy, daughter, Jillian, and granddog, Eleanor.
Kathy Mazur
Visual Stylist
Originally from the Midwest, Kathy began her professional journey in Tucson, AZ after college, working as an educator. Four years later she made the move to Phoenix and it was there she met her husband, Greg, and they welcomed their first two children. Twenty-eight years ago, they relocated to the Boston, Massachusetts area, where they raised their three children and Kathy launched a successful women’s clothing boutique.
Style has always been a passion of Kathy’s-whether expressed through fashion or home design. The move back to the valley in August 2024 marked a new chapter, as she sold her boutique and found a place at CeTerra. That transition from clothing to home fashion has felt completely natural, as both worlds share the same principles of style ,creativity, and personal expression.
As a visual stylist, she loves connecting with our customers and helping them find pieces that bring joy and beauty into their homes. Seeing their excitement and satisfaction with their purchases is truly the most rewarding part of what Kathy likes to do.
Caitlin Beauregard
Visual Stylist
Born and raised on the West Coast of Canada, Caitlin has always had a natural connection to creativity and design. From an early age, she found inspiration in the beauty of her surroundings, cultivating her creative spirit through performing arts, visual arts, and a constant curiosity for exploring new forms of artistic expression.
After earning her diploma in Interior Design in 2025, Caitlin embraced a new chapter by relocating to Arizona in early 2026, continuing to build her career in the design industry while bringing with her a fresh perspective and a passion for beautifully curated spaces.
Before joining CeTerra as a Visual Stylist, Caitlin spent several years in the hospitality industry, where she specialized in creating unforgettable experiences for weddings and special events. Her dedication to anticipating clients’ needs, curating meaningful moments, and bringing their vision to life is something she carries into every project today.
At CeTerra, Caitlin believes the most impactful interiors are created through intentional details, thoughtful layering, and carefully selected pieces that tell a story.
Staci Frank
Receiving & Merchandising Coordinator
Born and raised in Arizona, Staci returned to the Valley after retiring from a successful 29-year career with UPS. Her passion for interior design began while living in Coeur d’Alene, Idaho, where she worked for a custom home builder and inspired her appreciation for beautiful interiors.
Her eye for design and passion for home décor have helped our CeTerra customers find the perfect pieces for their homes. She is committed to providing exceptional customer service and creating a welcoming, enjoyable shopping experience for every client. When she’s not at CeTerra, Staci enjoys paddleboarding, hiking, traveling, and spending time with family.