We are a Philadelphia and New York-based team of forty architects, planners, and designers who believe great architecture comes from innovation within the context of tradition.

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VMA draws inspiration from traditional building principles to create architecture that responds to the places and organizations we engage with. We strive to reach a deep understanding of the social, cultural, and physical contexts of the project, in order to design solutions that reflect our clients’ heritage, values, and aspirations. Guided by our core values: innovation, beauty, and sustainability, we craft exceptional architecture that considers each project’s long-term environmental impact for future generations.

We pride ourselves on our commitment to thoughtful collaboration with our clients. By combining our deep expertise with our willingness to listen and ask hard questions, we work with our clients to create architecture that helps organizations grow, advancing their built forms in line with their missions.

Founded in 1988, we are led by founding partner Daniela Voith and four additional partners — John Cluver, Sennah Loftus, Robert Douglass, and Scott O’Barr — making us Philadelphia’s longest-continuously operating woman-owned architecture practice. Today, our diverse team of over 40 members is JUST and WBENC-certified and operates with consistent and meaningful care for pressing social and environmental concerns.

The model shop at the VMA office at 2401 Walnut Street, a renovation designed by Voith & Mactavish Architects.
The library of the VMA office at 2401 Walnut Street, a renovation esigned by Voith & Mactavish Architects.

Our Values


Traditional building principles inspire architecture that reinforces a love of place. Our work responds to and strengthens the heritage of our clients and their communities.


Understanding context is essential to thoughtful and responsive architecture. We consider the social, cultural, and physical facets of our projects to align organizations’ built forms with their missions.


New methods and intelligent techniques define inspiring architecture. We test new forms, technologies, and materials to advance projects beyond convention and expectation.


Beautiful architecture is both timeless and unique. We pursue designs that nurture and support the communities we work with by inspiring and uplifting their members.


Skilled craftsmanship defines exceptional architecture. Our attention to craft ensures that our designs respect our clients’ missions, programs, budgets, and aesthetics.


Sustainable design is at the heart of responsible and resilient architecture. We work as stewards to consider the ecological, financial, and operational impact of every project for future generations.