Studio

Located in Denver, Colorado, UNUM collaborative (pronounced ooh-nuhm and meaning "one") is a group of architects, designers, visionaries and craftsmen.

The collaborative was founded on the principle that all great design must originate from the collective. The office approaches design with a critical intent that challenges the established paradigms of architecture and design. The work encompasses a variety of scales and media, and blends the domain of art, architecture, industrial design and fashion. At the core of our design explorations is the desire to stimulate the senses and engage the user socially, intellectually and physically, while generating functional and beautiful solutions.

We are a full service Architecture and Interior Design firm focusing on craft, construction and emerging fabrication techniques. We have a commitment to serve our clients and the community we exist in. We believe in a design forward approach to architecture that focuses on our clients needs, while providing socially driven and responsibly economic solutions to help our clients achieve their goals

Services

UNUM Collaborative offers comprehensive architecture and interior design services, emphasizing craftsmanship, construction, and innovative fabrication techniques. Our multidisciplinary team excels in creating bespoke designs that merge art, architecture, industrial design, and fashion.
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We provide tailored solutions that address our clients' needs, ensuring socially responsible and economically sound outcomes. From initial concept to final execution, our services encompass a wide range of scales and media, aimed at stimulating the senses and engaging users intellectually, socially, and physically.

1. Architectural and Interior Design

We provide innovative and bespoke architectural and interior design solutions that seamlessly blend art, technology, and cultural narratives. Our designs aim to create functional and beautiful spaces, meticulously tailored to meet the unique needs and aspirations of each client.

2. Construction and Project Management

Our comprehensive construction and project management services emphasize precision, craftsmanship, and the use of emerging fabrication techniques. We ensure high-quality outcomes and efficient project execution, overseeing every phase from initial concept to final completion.

3. Custom Fabrication and Sustainable Design

We specialize in utilizing advanced fabrication technologies and environmentally responsible practices to produce unique elements that enhance both the functionality and sustainability of our projects. Our commitment to sustainable design ensures that each project is innovative and eco-friendly.

4. Design Consultation and Community Engagement

Our expert design consultation services are coupled with a strong commitment to community engagement. We aim to foster social interaction, well-being, and a sense of pride and wonder through thoughtfully designed spaces that resonate with and enrich the community.

Team

Adam B. Steinbach
Adam B. Steinbach, AIA, LEED AP
Principal | Design Director
Originally from Pennsylvania, Adam moved to Denver to pursue his Master of Architecture at the University of Colorado Denver. He graduated from CU Denver’s College of Architecture and Planning in 2012, and was recognized for his academic excellence and leadership in design with the prestigious Henry Adams Certificate. Adam has cultivated a thoughtful and research-driven approach to architecture throughout his career. His portfolio includes a diverse range of commercial and residential projects across the Mountain West and the Eastern United States. He is known for synthesizing complex design challenges into cohesive, contextually responsive solutions.
Full Bio
Jim Pfeiffer NCARB
Jim Pfeiffer, NCARB
Principal | Studio Director
Jim is from Allentown, Pennsylvania and moved to Philadelphia to attend Thomas Jefferson University’s College of Architecture & the Built Environment. Graduating in 2005, Jim is now a registered architect in multiple states, with a portfolio that spans aerospace, educational, government, retail, healthcare, residential, and commercial projects. He has spent the last two decades working in design and construction, serving as a project architect, manager, and field superintendent. Jim co-founded UNUM Collaborative and works day-to-day as the Studio Director, overseeing project delivery, architectural detailing, and team management. He values designs where logic and functionality meet aesthetics, believing good design is naturally captivating.
Full Bio
Nora Hoffman
Nora Hoffman
Senior Interior Designer
A native of North Denver, Nora has seen the city's cultural changes firsthand. In 2011, she earned her BFA in Interior Design with a focus on Sustainability from Rocky Mountain College of Art + Design. Before joining UNUM in 2018, Nora worked as a freelance designer and served as the sole Interior Designer for Helikon Gallery & Studios. She values timeless style and form, honoring the past while embracing the future. Nora is passionate about the design process and enjoys turning clients' visions into reality. Her expertise in color, material, and texture enhances the spatial experience. Nora ensures design intent is implemented correctly, making her a vital team member.
Full Bio
Chelsea Fish
Chelsea Fish
Interior Designer
Born in Colorado, Chelsea lived in numerous cities across the country before returning to her home state in 2014. With a degree in Music Business and Entrepreneurship, she spent the first decade of here career working for startups, gaining insights into customer service, operations, project management, and branding. Her work for design-centric brands inspired her to return to school, earning a Master's Certification in Interior Design at Heritage School of Interior Design in 2020. Her passion for design and brand marketing merges at UNUM Collaborative, where she connects physical spaces to brand identities, breathing life into both commercial and residential projects.
Full Bio
Levi Wall
Levi Wall, AIA
Architect | Project Manager
After earning a Master of Architecture at Kansas State University, Levi returned home to Colorado in 2012. His background encompasses both design and fabrication, including work as a graphic designer and visual art. His architectural portfolio focuses on adaptive reuse projects for commercial, educational, and residential clients.
Full Bio
Brandon Sweeney, NCARB, R.A.
Architect | Project Manager
Brandon moved to Denver over a decade ago to attend the College of Architecture and Planning at CU Denver. As part of the Colorado Building Workshop, a semester-long design/build project serving local non-profit organizations, Brandon contributed to the award-winning Colorado Outward Bound Micro Cabins. Since graduating with his Master of Architecture in 2016, he has worked in the high-end residential construction and architecture industry as both a designer and fabricator including roles as construction manager, site supervisor, and architectural lead.
Full Bio
Dane Gedney
Senior Interior Designer
Originally from Virginia, Dane is an Interior Designer known for creating refined, highly tailored interiors that prioritize cohesion, craftsmanship, and enduring appeal. He brings over a decade of experience leading projects from concept through completion, with a collaborative, client-focused approach. He partners closely with architects, contractors, and vendors to deliver cohesive design solutions, remaining involved through all phases of the process. His work includes space planning, material selection, FF&E, and custom furniture development, guiding clients through both design and construction decisions. Before relocating to Denver in 2025, Dane worked on a diverse range of residential projects, strengthening his ability to tailor each design to its unique context and client. His sensibility balances modern and classic influences, with an emphasis on clean lines, timeless detailing, and strong visual composition.
Full Bio
Maria Paulina Pelaez
Architectural Designer
Maria grew up in Medellín, Colombia, where she earned a Bachelor of Architecture from the Universidad Pontificia Bolivariana. She moved to the United States to continue her education at the University of Virginia, earning her Master of Architecture in 2024. Through the Urban Design Certificate program, Maria lived in Barcelona for her semester abroad, fully immersing herself in the city’s rich architectural and cultural heritage.
Full Bio
Vedder
Chief Barkitect
At 8 years old, Vedder brings more than half a dog-century of experience to UNUM Collaborative’s design process. As our resident Chief Barkitect, he has a nose for good design and an instinct for sniffing out the best ideas. Vedder’s specialties include site inspections (walks), structural integrity testing (leaning on legs), and client relations (tail wags). When he’s not paws-ing to review drawings, Vedder is busy demonstrating that great design is all about the bones, and he’s always willing to dig deeper to get them just right. His design philosophy? Every space should have a welcoming entry, a sturdy roof, and plenty of spots to curl up after a long day of fetch. Whether greeting guests at the door or lending a paw in the studio, Vedder keeps our projects grounded, reminding us that, in both architecture and life, it’s the little details (and belly rubs) that make a design truly timeless.
Full Bio

Partners

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American Institute of Architects
Blanchard Family Wines
Cerebral Brewing
Cholon Restaurant Concepts
Cohesion Brewing
Deviation Distilling
Digiredo
Downtown Denver Partnership
Downtown Property Services
Fernando Gomes Photography
Firefall Ranch

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IIDA
Industrial Arts
James Florio Photography
Jess Blackburn Photography
Left Hand Brewing
LVTD design
Mast
Natural Object
NEWH - Rocky Mountain
NIVAS
Hammer and Plate

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Realm
Scanlan Kemper Bard
The Olive Tiger
Vibe Restaurant Concepts
Wunder Werkz