+1 646 809 4343
174 Fifth Avenue 300
New York, NY 10010


Ryall Sheridan Architects designs projects which include new construction, renovations of existing structures, interior design, and additions to historic structures. Partners Bill Ryall and Ted Sheridan collaborate with the studio team to serve the various requirements of clients. Current and recent projects include a new sound recording studio near Brattleboro VT, the conversion of an 1880s tenement building into an artist's foundation in New York City, and various residences in New York State, Vermont, Long Island, Virginia, and loft, townhouse, and apartment renovations in NYC. All projects incorporate strategies for implementing environmentally-friendly, sustainable design. The studio works on projects beginning with the conceptual design phase, and following through with comprehensive working drawings and specifications, pricing of the work with contractors, construction supervision, and furniture installation. The firm has successfully produced commercial, institutional, and residential projects that have benefited from a close working relationship between client and all members of the project team.
Ryall Sheridan Architects is likely to be the first office in North America in which all people are certified as Passive House designers.

State Registrations

  • Connecticut
  • Massachusetts
  • New Jersey
  • New York
  • Vermont
  • Virginia
  • Texas

Memberships and Affiliations

  • AIA CoTE Committee (Committee on The Environment)
  • Acoustical Society of America
  • American Institute of Architects
  • Architectural League of New York
  • Institute for Urban Design
  • Municipal Art Society
  • Passive House Institute
  • Rhode Island School of Design, visiting Faculty
  • US Green Building Council
  • University of Virginia Architecture School Advisory Board
  • Van Alen Institute for Public Architecture
  • Group for East End (Long Island Environmental Advocacy)
  • DOCOMOMO Tristate Board


We start on our projects by working with models and sketches to develop designs while paying particular attention to the site, the context and the requirements of the client. At the same time, Passive House design principles are a central focus of our design development. Hardline drawings and 3D renderings are then produced while working collaboratively with the client, consultants and contractor. We are involved in the design at all scales, from site planning to custom hardware.