Hatch a plan. Mark your target. Create a plot twist. Prepare to Scheme. With just a click of your finger, you’ll be connected with the talented team of interior designers at Scheme, who will work with you to create the room of your dreams whether that’s a family room, kitchen, bedroom, office or something entirely new. The Scheme designers take the measurements, design the decor battle plan and then give you everything you need to go out, shop the pieces and put together your dream room.

At Scheme, it’s all about the connection and collaboration between the experts and you. Interior design doesn’t have to be intimidating. Just Scheme.


Mackenzie Collier

Owner/Principal Designer

B.S. Psychology, Michigan State University
A.A.S. Interior Design, Harrington College of Design

Throughout her career, Mackenzie has gained a reputation for her unique approach to creating spaces that reflect her clients’ distinctive styles & interests. With a diverse portfolio of both residential and large-scale commercial projects, she has honed her skills in space planning and project management, placing emphasis on universal design practices and sustainability.

Prior to graduating with honors from Harrington College of Interior Design in downtown Chicago, Mackenzie earned her BS in Psychology from Michigan State University, where she focused on child and family psychology. The marriage of these educational backgrounds gives her the uniquely adept ability to communicate with clients and interpret their specific needs, and to understand the distinct ways individuals use their various spaces.

Mackenzie has built her business with her core values of community building, positivity and integrity in mind. She teaches and speaks nationally about business practices and interior design and is part of an ever-growing community of business owners who are expanding beyond the traditional business model.

Mackenzie constantly searches for new inspiration through travel, art, music, and nature. She loves highly functional spaces that have clean lines and natural light pouring in. She is a firm believer that the best design solutions are also the simplest and that kindness always comes back to you.

Aleah Carr

Senior Interior Designer/Project Manager

B.S.D. Interior Design, Arizona State University

Specializing in AutoCAD and SketchUp, Aleah brings a unique, tech-savvy form of concept development to the team, along with a creativity and originality that is all her own.

Born and raised in El Paso, Texas, Aleah relocated to Phoenix to attend Arizona State University, where she earned a bachelor's degree in Interior Design. She joined the MCI team as an intern and has been bringing fun, funky elements to the table ever since. Throughout the years, Aleah has worked her way to the top of the ranks as Senior Interior Designer, serving as the primary contact for clients and contractors and overseeing project details from start to finish.

Outside the office, if she’s not stuck with her nose in a book, you can find her curating her collection of indoor plants or hanging out downtown.

Karleigh Handwork

Interior Designer

B.S. Interior Design, Art Institute of California, San Diego

After falling in love with interior design at a young age, Karleigh received her Bachelors degree from the Art Institute of California, San Diego. During her studies, she discovered her favorite part of interior design is the potential of color to transform a space. Karleigh loves how powerful and personal this element of design can be, and likes using color to highlight clients' personalities in their spaces.

Moving to Phoenix, Karleigh was eager for new experiences and to see how beautiful the desert can be. MCI's team environment of dedicated interior designers who collaborate and explore together, was exactly what she was looking for. In her free time, she enjoys taking walks in nature, socializing with friends and finding creative ways to add to the decor in her home.

Yoselin Castro

Senior Interior Designer

A.A. Interior Design, Phoenix College
B.A. Interior Design, Northern Arizona University

Yoselin received her Associate's Degree in Interior Design from Phoenix College and her Bachelors of Science in Interior Design at Northern Arizona University. She is determined and committed to bringing a creative and vibrant view in her designs as she skillfully balances form, function, and budgets.

Yoselin is passionate about interior spaces and driven to enhance the way people live, work, and play in their everyday environments. She gains inspiration by exploring new places, as well as through her love for nature, art, and fashion.

When she is not in the design studio, Yoselin likes spending time with her family, baking vegan recipes, and practicing yoga.

Monica Milewski

Studio Manager

B.S. Psychology, Loyola University Chicago
M.S. Child Development, Erikson Institute
M.S.W. Social Work, Loyola University Chicago

Always seeking to grow both personally and professionally, Monica aims to add her zest for organization and client connection to the MCI team! Originally fueled by a desire to understand people on a deeper level, she received her Masters of Social Work and Child Development back in her hometown of Chicago. Life shifted her direction into the world of design, and she spent three years as a Project Coordinator at a kitchen and bath showroom.

Deciding it was time for a change from the cold, cloudy midwest, Monica sought more sunshine and moved to Phoenix. Here, she seeks to engage with the community and share how MCI can transform their spaces into interiors that are a beautiful showcase of personality. Monica hopes the desert landscape will serve as inspiration for her creative hobbies of photography, painting, and gardening.

Maddy DeVries

Interior Designer

B.S. Interior Design, University of Bridgeport

During Maddy's years at the University of Bridgeport, she was ASID UB chapter president for two years and then moved onto becoming a student representative to the Connecticut ASID board; she graduated magna cum laude and aims to continue growing in the Interior Design community in Phoenix. While spending summers in Oregon, she interned for Harry & David in their photo studio assisting the photographer, food stylist, and art director. The process of styling for the shoots inspired her to blend the world of photography and design, seeing its applications in various settings.

These experiences now allow her to use light, texture, and color to create a meaningful 3D perspective in all her designs. Maddy recently located to Phoenix and when she isn't in the studio, you can find her with her husband and puppy finding new places to enjoy the desert atmosphere.


We get to know you.

We start by meeting with you to discuss your dreams for the space. We gather measurements, document all the little quirks, and get to know your personal style. Whether in person or via video chat, we take the time to understand your needs and vision—all while sticking to your budget.

We put our skills to work.

Next, we put our heads together to develop an original design concept and color palette. Once we’ve curated the best ideas from each of our designers, we start sourcing some of the key pieces. In just a few days, we send you a digital design appetizer to give you a taste of what we’ve got cooking. Give us feedback, and we’ll tailor the design to meet your needs!

We deliver.

Design board: see all the items we’ve sourced for your design—furniture, art, accessories, textiles… you name it—on one page.
Custom floor plan: professional space planning to help you envision your new layout. This makes styling easy as pie!
Shopping list: a digital inventory of our curated selections. Just click and order, or use our selections as a guide and make your own custom substitutions!

Great design, made to order.

Family Room | Formal Living Room | Master Suite | Office | Game Room | Play Room | Dining Room | Guest Room | Child’s Room | Patio | Pool Area | Kitchen | Hallway | Powder Room

$2499 per room

*get in touch for more details on Great Room pricing

Shopping & Styling

Prefer we take care of the interior design from start to finish? Need a concierge? Don’t worry, we’ve got this. Let us save you time and energy
by taking on the shopping and styling. All you have to do is kick back, relax, and let us transform your space. Get in touch for more info on pricing.

Looking for help with a remodel? Our sister company Mackenzie Collier Interiors is the perfect place to start commercial & residential remodel projects!