A diverse group of six women are gathered around a table, smiling and discussing architectural plans. One woman is pointing at the plans, and another is seated with a tablet. There is a potted cactus plant on the table.

Meet The Team Behind Arizona's Boldest Interiors

For 15 years, Mackenzie Collier Interiors has designed bold, functional interiors for ambitious homeowners and fast-growing companies.

We're known for work with real personality, a process that takes the overwhelm off your plate, and spaces built to last. No matter the scale, we tailor every project to the way you actually live and work.

Our team comes from all over the world, and that mix is exactly why our designs don't look like anyone else's. We work across private homes, multifamily housing, offices, restaurants, retail, and wellness spaces, and we especially love breathing new life into historic, mixed-use, and adaptive reuse projects.

From homes to fast-scaling brands like Lemonade, Equality Health, Culdesac, Greenwood Brewing, and Sonesta, we partner with clients throughout Arizona and across North America.

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A woman with shoulder-length blonde hair smiling with arms crossed, sitting at a white table in an indoor space with large windows and green plants in the background.

Meet the Founder

MCI began with Mackenzie Collier, an interior designer with a design degree, a psychology degree and a healthy disregard for the way things are "supposed" to be done. That combination is the whole philosophy: we start with how you want to feel in a space, then build the beauty and function around it.

Fifteen years and 500+ projects later, Mackenzie leads a team that designs with personality, sweats every detail, and believes the best solutions are also the simplest. It's no accident that some of her proudest work brings people together, from neighborhood restaurants to community gathering spaces.

An award-winning entrepreneur, named Best Entrepreneur by Arizona Foothills Magazine and one of Yelp's Top 10 Women-Owned Businesses, Mackenzie also coaches creative entrepreneurs on building businesses that fuel their lives instead of running them. She built MCI to prove that exceptional design and a genuinely good process can go hand in hand.

The MCI Team

Some Of Our Accolades

  • "Best Interior Design Firm"

    -Phoenix Magazine

  • "Design Icon Of The Year"

    -Sources For Design

  • "Best Kitchen Designer"

    -Modern Luxury Scottsdale

  • "Best Interior Design Firm"

    -Arizona Foothills Magazine

  • "Best Entrepreneur"

    -Arizona Foothills Magazine

  • "Top 10 Women Owned Businesses"

    -Yelp

  • "Best High End Interior Design Firm In The USA"

    -Luxe Life Magazine

  • "Best Of Houzz: Design"

    -Houzz.com

    (2025, 2024, 2023, 2022, 2021, 2020, 2019, 2018)

  • "Best Of Houzz: Service"

    -Houzz.com

    (2025, 2024, 2023, 2022, 2021, 2020, 2019, 2018)

Photo of luxury interior designer in Phoenix workspace with floor to ceiling windows, green velvet desk chair, and houseplants

Join our team

We’re always looking for badass professionals to join our team! Follow us on Instagram or LinkedIn to be the first to know about open positions.

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“What a fun TEAM! You can tell they love what they do. Extremely professional, attentive, friendly and fun at the same time. Great aesthetic that spans many styles without being too trendy. They nail it every single time! 11/10 would highly recommend!”

-Lori, Sun Valley, ID