is a creative and spirited architecture and design studio under the leadership of Olvia Demetriou, FAIA and Peter Hapstak III, AIA, two accomplished design professionals whose careers have long been celebrated for their innovation and timelessness.

The studio benefits from a diversely talented and experienced group of architects and designers who produce striking and inventive design solutions.

Known for designing a full array of project types and sizes, HapstakDemetriou+ takes clients ideas from conception to full realization.

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Recent Press

Client List

&Pizza

14th & Corcoran

Abel Brown

American Tap Room

Arlington Tower

Avenue Suites-Georgetown

AYSE Meze Lounge

The Bentley

Bistrot Le Zinc

Black Hog

Blue Haven Resort

Bonner Group

Boss Shepherd’s

Bracket Room

Brain Freez

Brasserie Beck

Bread Furst

Buredo

Cafritz Residence

Casa Luca

CAVA Grill

CAVA Mezze

Chef Geoff

Choolah Indian BBQ

Davies & Kendall

DC Pizza

Dean & Deluca

Diwan Residence

Dupont Hotel

Fields Good Chicken

Fiola Mare

Freshii

Gypsy Soul

Hahn Loeser Parks

iRicchi Restaurant

Italian Market

Kalorama Residence

Kasper Residence

La Chaumiere

Levine & Associates

Little Beet

Little Folks School

Lost Society

Mason Dixie Biscuit Co.

Mercado de Paseo Caribe-Puerto Rico

Mission Apartments

Muze at the Mandarin Oriental

Mohegan Sun

Mussel Barn

Nando’s Peri-Peri

Niemczewski & Hoffman Residence

On Rye

One Eight Distillery

Open Road

O Street Market

Ouzo Bay

Oyamel

Park Chelsea

Pineapple and Pearls

Plan B Burger

Punjab Grill

Ritz Carlton

Rose’s Luxury

Rubin Museum

Taco Bamba

Tadich Grill

Toregas Residence

Trio Restaurant

The Washington Ballet

Wildwood Kitchen

William & Carolyn’s

Zaytinya

2715 M Street NW
4th Floor
Washington, DC 20007

Telephone
202-333-9038

Fax
202-333-6888

Email
info@hd-ad.com

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Architecture and Design

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Commercial

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Residential

Restaurant

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Partners

Olvia C. Demetriou FAIA

Peter F. Hapstak III AIA

Team

Alexi Adamstein

Anastasia Tulpa

Andrea Ross Robins

Bill Young

Chris Buscetta

Christopher Corneal

Cristian Rosa

Diego Castellanos

Edgardo Vela

Elisabeth Kim Oliver

Hannah Maka

Indira Cruz

Kassandra Bishop

La'Joya Worrell

Meagan Stables