FSI Architecture is a professional design firm based in New York City specializing in comprehensive architectural services and building envelope expertise. This firm focuses on creating resilient structures that meet the rigorous demands of an urban environment. Their approach integrates high-performance building standards with aesthetic integrity to produce sustainable results. They provide detailed technical analysis to improve energy efficiency across both new constructions and historic restorations. By prioritizing occupant wellness and environmental responsibility, the team delivers projects that stand the test of time. Their technical proficiency includes advanced energy modeling and the application of Passive House principles for maximum thermal comfort. Clients benefit from a deep understanding of local building codes and complex structural requirements. The firm remains dedicated to advancing eco-friendly construction practices throughout the tri-state area.