Graduate of the Southern California Institute of Architecture SCIARCH (B. Arch 1985) and is a licensed architect in the state of New York. He has 25 years of international experience as an architect, builder, project manager, and developer, working in the United States, Italy, Israel, Czech Republic, Slovak Republic, Ukraine, Bulgaria, and Bosnia-Hercegovina.  His comprehensive knowledge gained through working in multiple cultures with a wide range of project types, performing all aspects of the design and development process, gives him a unique insight into the needs of any project from the conceptual to the financial.   

Scott Sivan, Architect

Graduate of the University of Oregon School of Architecture (B. Arch 1987) and is a licensed architect in California and Washington. He has over 25 years of experience in commercial and residential architecture. He was Principal of Production at KDA (2003-2010), an architecture and interior design firm in Berkeley, CA. before starting (2010) his own practice - T2 Design + Architecture in Seattle, WA. He is both a practicing architect and educator who values thoughtful inquiry and dialogue to be the catalyst to uncover a successful design.  

Todd Tuvia Poliskin, LEED AP BD+C

As a Team

Scott and Tuvia combined their collective knowledge, skills, and infrastructure in the summer of 2013 to form In-Situ Architects in the US. It was their galvanizing commitment to provide hospitable, environmentally responsible, economically viable, elegantly planned, and sensitively designed projects for both the private and public sectors that brought them together. As one entity, they now offer over 50 years of varied architectural experiences and expertise in both domestic and international locales with projects ranging from custom single family residences, multi-family housing, mixed-use commercial, retail, food service,  shopping centers, health clubs, work environments and adaptive re-use of historic buildings.


With so much hands-on design, building and management experience between them gathered from a large array of projects spanning many countries and cultures, Scott and Tuvia have honed their design and management process to achieve maximum results within the project's means and intentions. In-Situ Architects provides full range of services: from pre-design assessment, feasibility study, marketing materials, conceptual and schematic design through design development, construction documentation and construction administration.


In-Situ Architects consists of a complementary staff of talented design professionals committed to the same values as its founders. Our staff is highly skilled at creating exceptional presentation materials then developing them into detailed construction documents with conscientious project management oversight. We are committed to producing the highest quality designs with attention to detail while meeting clients expectations, budget and timeline.