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A | D COLLABORATIVE is an architecture firm based in Savannah, Georgia. 


We focus on client relationships and integrity. We offer an integrated and personalized approach to architecture and development through collaboration with our clients, investors, and community. We are committed and dedicated to every client and project, relying on our experience, expertise, and leadership to deliver projects of the utmost quality.

We work on both commissioned and self-initiated projects. Our work includes an array of projects focusing on commercial, hospitality, mixed-use, and residential, with expertise in all phases of the architecture and construction processes. 

We seek to enhance the built environment, understanding each detail and space influence the experience of one's surroundings. We explore iterations, refine designs, and embrace the technical and complex to create functional environments resulting in impactful architecture.

We recognize each project has its own complexities and strive to ensure budget, schedule, and design remain relevant throughout the project. We excel at project delivery and efficiency, collaborating throughout the project with clients, designers, engineers, contractors, and consultants to execute successful projects.


Architectural Plan



Heather Spigner founded A | D COLLABORATIVE in 2020 after years of successful experience and leading projects with award-winning architecture firms. Her experience includes residential, mixed-use commercial buildings, hotels, retail, restaurants, museums, medical facilities, aerospace, manufacturing, and a presidential library in collaboration with various designers and developers.

Prior to founding A | D COLLABORATIVE, Heather worked in the office of Robert A. M. Stern in New York on a number of high-profile projects. She later joined House & Robertson Architects, an executive architecture firm in Los Angeles, where she lead numerous projects with various well-known design architects. Heather is a graduate of Savannah College of Art & Design, where she received a Master of Architecture degree in 2007. Heather is licensed to practice architecture in Georgia and South Carolina and holds a Certificate from the National Council of Architectural Registration Boards.  

Registrations & Affiliations

Registered Architect [Georgia | South Carolina]

American Institute of Architects [AIA]

National Council of Architectural Registration Boards [NCARB]

Historic Savannah Foundation [Member]

Savannah Area Tennis Association [Board Member]

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