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The partners and staff of SPG Architects celebrate the collaborations we engage in with each of our projects; we collaborate with our clients, our consultants, the contractors and trades who execute our work, our communities, and our in-house team of architects and designers. Our completed projects are the culmination of our collective efforts and represent the aspirations of our clients.

We engage with our teams in the belief that it is the responsibility of individuals to personally and professionally work with our broader community for the common good. Our team serves on foundation boards of local and national institutions and not-for-profits, participates in professional organizations, and engages with schools and universities, while donating pro-bono services and participating in grassroots initiatives.

Our principles are intimately involved with every project and each team member participates fully in the project design and delivery from initial concept through project completion, collaborating throughout the entire design process for the betterment of the completed work while communicating our shared values.

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Eric A. Gartner, AIA, LEED AP

As SPG’s principal partner,  Eric has been practicing architecture since obtaining his Master of Architecture degree from the University of Virginia where he also received his undergraduate degree.  He maintains an active relationship with UVA, having long served on the School of Architecture’s Foundation Board and he regularly serves as a visiting design critic for student reviews at numerous schools of architecture. At SPG, Eric has broadened the firm’s range of project types and helped it to expand its national and international presence. SPG Architects’ built work is now located not only across the US, but also in Latin America and Africa, and it has been published worldwide. Eric’s on-going commitment to both environmental and social responsibility has instigated and informed a series of projects that explore the benefits of sustainable design. Eric continues working as the design architect for Kageno Worldwide community development project in Banda, Rwanda and a new school in Kenya.  For the firm’s private client base, Eric  continues to explore the relationship between local environments & building traditions and modern technologies & architectural expression. Eric is a member of the American Institute of Architects, is registered with the National Council of Architectural Registration Boards through which he is licensed in numerous states, and is a LEED Accredited Professional.


Caroline N. Sidnam, AIA 

Coty is the founding partner of SPG Architects. Under her leadership the firm grew from an exclusively residential practice to one with expertise in a variety of project types – always guided by principles of design and service. Her extensive travel experience has guided her role as lead architect on a variety of long distance projects both in the US and abroad. Her interest in environment, conservation, and health issues has led the firm to undertake paid and pro bono projects in these areas and has guided her extracurricular activities, on which she now mostly focuses. Coty serves on the Board of the Wildlife Conservation Society, where Global Health – wildlife, domestic animal, and human – has been the primary focus of her activities. She has served as the Chair of both the Global Health Subcommittee and the Buildings & Grounds Committee. Coty is a founding member of the Board of The Mayday Fund and has been active with both the Natural Resources Defense Fund and the National Geographic Society. She holds a B.Arch. degree from The Cooper Union and a B.A. from Sarah Lawrence College, is a member of The American Institute of Architects, and is registered with the National Council of Architectural Registration Boards.

SPG Architects Team


Energetic, well-educated, diverse and engaged are four of the words that best describe SPG’s team. These attributes are enhanced by their professional experiences here at SPG and build upon their work and educational experiences prior to joining our team. Their collective focus on supporting our clients with their knowledge, their design acumen, their commitment, and their problem-solving skills enhances our ability to communicate well-considered, thoughtful, and innovative solutions to each and every project.

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