Olvia C. Demetriou, FAIA

Elisabeth Kim Oliver, Studio Director; Alexi F. Adamstein, Designer; Andrea Ross, Head of Interiors

Olvia C. Demetriou, FAIA, and Peter F. Hapstak, III, AIA, founded HapstakDemetriou+ in 2011, bringing with them extensive experience as the principals of Adamstein & Demetriou, Inc., and CoreDC, respectively. HapstakDemetriou+ designs residential and multi-family buildings, hotels, restaurants, offices, retail and gallery spaces. With a team of 20 architects and three interior designers, the firm’s work is both inventive and eye-catching.

Demetriou oversees the residential portfolio. A graduate of The Cooper Union School of Arts & Sciences, she was the youngest architect ever elected to The College of Fellows of the American Institute of Architects in 2000. Her design solutions are bold and imaginative with an emphasis on dramatic and sculptural forms, evocative lighting, sensual materials and inventive detailing. Her attention to detail has been recognized by her peers through numerous awards.

“At HapstakDemetriou+, we are passionate about creating designs that surprise, delight and energize the people who experience them,” Demetriou says. “Our unique architectural designs couple our clients’ vision and core values with the pragmatism of a livable home.”

Olvia Demetriou’s work has been featured on Fox Television and in hundreds of publications, including Architectural Record, BusinessWeek, Interior Design, Interiors, Architectural Digest, Rizzoli’s Private Washington, World Architecture, The New York Times, The Washington Post, Metropolitan Home, House Beautiful and Elle Décor.






Professional Affiliations

Recent Awards