Mazza Collective is an interior design studio in New Jersey.

Our philosophy is the best design comes from blending architectural and artistic tradition with bold aesthetic ideas.

Kate Mazza launched her eponymous interior design firm after a decade in the industry. She has worked under acclaimed Architectural Digest Top 100 and Elle Decor Titan Kelly Behun, Luxe Magazine’s Gold Listers and Elle Decor A-listers Joan and Jayne Michaels, and Architectural Digest’s Ones to Watch and American Design Hot List Award recipient Alex P White. Her mentors imparted her with a passion for art and high-quality materials, as well as invaluable project management skills.

Known for her sharp eye for detail and appreciation for architecture, antiques, and construction, Kate's equally at ease on an active jobsite as she is at an art gallery. Kate brings her enthusiasm for great design and collaboration to each project and ensures her clients love both the process and the end result, their dream home. 

Prior to that, she earned a Master of Fine Arts degree with honors from the prestigious New York School of Interior Design and a Bachelor of Science degree in interior design from Virginia Tech, two of the top programs for interior design in the US. Originally from New York, she now resides in northern New Jersey. In her spare time, Kate can be found renovating her own dream home, testing out gluten-free recipes, and hunting for one-of-a-kind vintage finds.

Testimonials

  • "Working with Mazza Collective was an absolute dream! Kate transformed almost every room in our house, and the transformation was not just expansive, but incredible! We couldn't be happier! Kate has an amazing design aesthetic which is why we hired her, but it’s the way that she listens, cares, is patient, and is a problem solver that is the reason we have recommended her to all our friends. Thank you Kate & thank you Mazza Collective!"

    Shayla, Montclair, NJ

  • "Kate did an exceptional job designing our home. As first time homebuyers we were understandably nervous about hiring an interior designer. But Kate’s approach, knowledge, style, patience, and attention to detail made this experience amazing! We couldn’t be happier with our home and would highly recommend Kate to anyone."

    Will, Montclair, NJ

  • "Kate Mazza is an extraordinarily talented interior designer who is also unfailingly pleasant. When I hired Kate, I told her I needed someone that could handle everything for my large-scale renovation because my work schedule did not leave much time for me to do anything else, and I am terrible with details of this kind. Kate understood my needs immediately and handled my renovation from concept to completion using her highly-organized and efficient process which left no detail unmasked. Additionally, we needed a lot of design direction and everything Kate brought to the table was a hit! Kate also worked seamlessly with contractors and vendors, and facilitated those relationships with ease. Everyone enjoyed working with Kate! If you are looking for the gold standard in interior concept and design, you can stop looking right here because Kate Mazza and Mazza Collective are it!"

    Jennifer, Montclair, NJ

  • "In designing my children’s bedrooms, Kate really unlocked the potential for these spaces to be the inviting, cool, and completely accessible areas that the boys now cherish. She stayed within our budget, promptly responded to our requests, was incredibly detail-oriented, and really impressed me with the final designs."

    Dave, Glen Ridge, NJ

  • "Kate is a true pleasure to work with. She is creative, smart, compassionate, and professional. Kate goes above and beyond to deliver excellent customer service, always listening to her clients' needs. Her attention to detail is a gift in the world of interior design and home renovation. She will transform your home into a functional space that feels like the best version of you."

    Ranya, Glen Ridge, NJ

  • "Kate is an incredible designer who brings her artistic eye to every space. We have worked with Kate on several of our homes and love that she understands how important every detail is to us. Our buyers are all very happy and Kate's work has helped us accomplish our goal of being extraordinary luxury home builders. It's a pleasure to work with Kate and we look forward to working with her on more of our homes."

    Allison, principal of CitiScape Builders Group, Livingston, NJ

  • "Kate provides exceptional service beyond expectations. She brings a keen eye and fresh perspective to each project... while delivering the highest standards of professionalism and communication."

    Stephanie, Westfield, NJ

  • "Kate was easy and fun to work with! She took all ideas on board, listened to our vision and was patient in the execution of both plans and construction. Kate is extremely responsive to all forms of communication and loved to think ahead about what any vendor, sub or contractor might need or be missing to ensure the process went smoothly. There was never a question we could not ask her or fabric she wouldn’t scour the earth to find for us."

    Jacqueline, Montclair, NJ

  • "Kate has impeccable taste, is extremely well organized, and always manages to find the right solution that feels simultaneously original and contemporary, yet respectful of the space she is working with. Her ideas always feel like a perfect fit for the project, and the network of contractors, artists, and tradespeople she brings along is always equally eclectic and appreciated."

    Matt, owner of Rauch Architecture, New York, NY

  • "Kate has an incredible eye. She brings such a unique design approach. Thoughtful, artful and a constant professional. I love all of the projects we do together."

    Ariana, owner of Ariana Hoffman & Co: Decorative Artisans, Montclair, NJ

  • “Kate has a pristine eye and great attention to detail. She’s responsive and always great to work with.”

    Courtney, owner of Rombough Architecture, Montclair, NJ

  • “Kate was such a pleasure to work with. She delivered the design and plan that was exactly what we hoped for.”

    Ashley, Glen Ridge, NJ

  • "I discovered Kate's work a few years ago. Her appreciation for beauty quickly made me follow her on social media and be a devoted fan. Over the years, I’ve closely followed her impressive career growth and have fallen in love with her designs. I truly admire her keen eye for cool and unique art. Professionally, Kate is exceptional, serious, and hardworking."

    Jesus Nunez, owner of J Nunez Gallery, Millburn, NJ

  • "I have had the privilege of working with Kate from Mazza Collective for over a decade and she has been an essential partner for our delivery business over the past decade. Her wealth of knowledge, outstanding communication skills, commitment to excellence, and unwavering support have made her an integral part of our business. I look forward to many more years of collaboration with Kate, knowing that she will continue to be an invaluable asset to our delivery company."

    Amador, owner of A Designer Move, Tinton Falls, NJ

  • "Mazza Collective expertly challenges the conventional approach to Interior Design by blending that which is unexpected with that which is conceptually classic. Be prepared for magic."

    Jacob, owner of Jacob Snavely Photography, Brooklyn, NY

  • "Kate is a pleasure to work with! She has such an eye for detail and her designs are such a fresh approach to classic interiors. She is a consummate professional."

    Lisa, Ridgewood, NJ