Thoughtful architecture can change our lives — we apply this principle to the complex challenges of design, construction, and fabrication.

Arc & Mill offers a broad range of services from the conceptual design stage through complete project supervision. We aim to reduce inefficiencies in the conventional design and build processes, creating a more seamless experience for everyone involved. Our approach to each project: a thoughtful evaluation of the client’s needs, a thorough investigation of the surrounding environment, existing structures and systems, and a refined program that addresses both.

Our People

Seth Baum, RA - Principal

Seth brings over twenty years of professional experience in architectural design, historic preservation and restoration, project management, and facade engineering. Focusing on the integration of design and construction through the use of both digital and traditional techniques, he is dedicated to pushing the boundaries of the architectural practice while honoring its rich history. His past works have been the recipients of the John Russel Pope award for historic preservation and the Lucy G Moses preservation award. He has individually been recognized as the recipient of the Sir John Soane Museum Traveling Fellowship and the Taconic builders academic scholarship.

Seth began his architectural studies at Parsons School of Design, developing a strong foundation in modern design principles. He furthered his education at the Beaux-Arts Atelier at the Institute of Classical Architecture & Art, where he immersed himself in the traditions of classical design and craftsmanship.

He has most recently been exploring digital fabrication and its potential for use at the residential scale.

A few of his notable past works include:

  • New York Times Building

  • New York Palace Hotel

  • United States Capitol Dome Restoration

  • Pell Wall Hall, Market Drayton, Staffordshire UK

Carolyn Morris, LEED AP - Managing Director

Carolyn brings over 15 years of expertise in project management and program coordination to Arc & Mill. Her career began in state, federal, and international politics, where she honed her skills in strategic planning, regulatory navigation, and stakeholder engagement — skills she now applies to the construction and design process.

Carolyn holds dual bachelor’s degrees in International Studies and Religious Studies and a master’s degree in Homeland Security & Emergency Preparedness from Virginia Commonwealth University. It was during her graduate studies that she began exploring sustainability concepts relative to design and architecture. Her commitment to sustainable practices was further cemented through her LEED AP certification, giving her a deep understanding of green building standards and environmental stewardship.

Before transitioning to the field of architecture, Carolyn was the Manager of International Development at the U.S. Chamber of Commerce where she oversaw the Invest in America! program, aimed at boosting foreign direct investment into the U.S. Carolyn’s diverse background paired with her commitment to green practices ensures Arc & Mill’s ability to navigate complex challenges and deliver innovative architectural solutions.

A few of her notable past experiences include:

  • Legislative Aide for the Senate of Virginia

  • Coordinating professional development programs for over 50 international governors

  • NSEP Boren Scholar in Turkey and U.S. Department of State Critical Language Scholarship in Azerbaijan