Architecture Firm Directory

1100 Architect


1100 Architect is the New York- and Frankfurt-based architectural firm founded by David Piscuskas, FAIA, LEED AP and Juergen Riehm, FAIA, BDA. 1100 provides custom architectural design, programming, space analysis, interior design, and master planning services to public and private clients. The firm’s domestic and international work spans a vast array of typologies, including residences, educational and arts institutions, libraries, offices, retail environments, and civic facilities.

1100 Architect is known for works of architecture that are timeless manifestations of place, at once distinctive and modern while always thoughtful about site, setting, and environment. Fundamental to this pursuit is the belief that building design is a progressive process informed by client aspirations, site, history, available resources, and time.

We believe that design can motivate and inspire users, and make an affirmative, lasting impact on individuals and communities alike. The studio avoids dogmatic structures, instead favoring a careful consideration of light, material, and detail that is specific to the nature of each project. The end products are functional, beautiful, innovative, and sustainable spaces that elegantly integrate into their surroundings.

Our unwavering dedication to design excellence and community service is supported by advanced thinking in sustainability and high-performance design. Based on our experience designing projects both within and outside of the U.S. Green Building Council’s LEED requirements, we view good design and environmental sustainability as interconnected elements of a thoughtful, responsible project.


475 10th Avenue, 10th Floor
New York, NY 10018
Tel: 212-645-1011
Fax: 212-645-4670


Betty Gonzalez

Firm Established



David Piscuskas, FAIA, LEED AP

Juergen Riehm, FAIA, BDA

Susanne Milne, MAA

Ed Parker, AIA

Gunter Weyrich, Dipl.-Ing. Architekt


Architects: 21
Interior Designers: 1
Other Technical: 10
Administration: 8

Total: 40

Example Projects

Long Island House; 
Long Island, NY 
Completed: 2012
Situated on the eastern shore of Long Island, the design of this beach house is conceived as emerging from the landscape.The house is composed of two elements – the main house and a pavilion.

Downing Street Townhouses; 
New York, NY 
Completed: 2013
For this new row of townhouses in the West Village of Manhattan, we re-evaluated the classic building typology and worked to balance public street front presence with the residents’ need for privacy.

House in Florida; 
Palm Beach, FL 
Completed: 2012
This single-family residence was designed with modern simplicity and elegance. Strategic landscaping enhances street front privacy, while the rear of the house opens up to the backyard.

Queens Central Library, CLDC; 
Queens Library 
Jamaica, NY 
Completed: 2011
Master plan for the renovation of the central library and design and construction of a children’s addition as part of the NYC Department of Design and Construction Design Excellence Program.

Manhattan Triplex; 
New York, NY 
Completed: 2011
Originally three separate apartments this modern manifestation uses refined details and neutral colors to create a cohesive environment. AIA NY Chapter Design Awards, Interiors Merit Award, 2012.

Brooklyn Detention Center; 
NYC Department of Design and Construction 
Brooklyn, NY 
Completed: 2010
Design of the renovation and expansion of a detention center with a LEED Silver certification target. AIA New York Chapter Design Award, Merit Award Unbuilt Work Category, 2012.

Type of Work

Criminal Justice/Correctional
Educational Facilities
Health Care/Medical
Institutional Facilities
Office Building/Commercial
Public Work
Residential (Multi-Unit)
Residential (Single Family)

Long Island House

Downing Street Townhouses

House in Florida


AIA New York Chapter
536 LaGuardia Place
NY, NY 10012
(212) 683-0023

Gallery Hours
Mon-Fri: 9am to 8pm
Sat: 11am to 5pm

Office Hours
Mon-Fri: 9am to 5pm