He worked with a local attorney to get quick approval with local historian that appreciated the design's sympathetic addition to the street and with many other historic buildings.
- Francisco D'Agostino

At Ernest Schieferstein Architecture, our team of architects and designers are dedicated to excellence. Our reputation is built upon strong and meaningful relationships with our clients. On projects large and small, and everywhere in between, we enjoy sharing ideas and collaborating for the desired outcome, seeing each project through to completion with a firm commitment to quality design and solid workmanship. We offer a full range of services from architectural designing to construction documents and project management.

Our firm has been steadily growing since its inception in 1982. From our roots as an architectural firm, we have expanded our base to include services in interior design as well as landscape design. A construction component was added to our firm in 1998, making our firm one of the few full service design firms in the east end.

Whether your project is modern, traditional, or includes special design elements, our team will take an individual approach. Our history of handling design challenges is visible in our portfolio, which is as diverse as our clients themselves. Also living in the community in which we work, we have a strong commitment to the environment and the use of sustainable materials.

Ernest Schieferstein, R.A.

Ernest Schieferstein, R.A. earned his Bachelor of Architecture in 1976 upon graduating from his program at Syracuse University. In 1977, he set out to begin his career, working for E.L. Futterman Associates in Sag Harbor.

Michael Mensch

Our Senior Project Manager, Michael Mensch received his Bachelor in Industrial Design in 1982 after completing studies at Carnegie Mellon School of Architecture and Pratt Institute.

Ernest and Michael have been collaborating on architectural design projects for more than twenty years, creating, along with their staff, some of the most diverse architecture to be seen in the east end.

To view a more extensive project portfolio, or for more information, please call us at (631) 725-4071.

Our design services include:


  • Design & Master Planning
  • Site Selection Consultation
  • Pre Planning & Planning Negotiations
  • Project Estimating & Cost Control
  • Building Regulation Evaluation
  • Complete Design Services
    through Working Drawings,
    Project Management, Lighting Design,
    and Graphic Design.


  • Space Planning
  • Furniture Design and Layout
  • Kitchen & Bath Design
  • Electrical Plans
  • Window Treatments
  • Staging


  • Site Planning & Concept Design
  • Full Landscape Design
  • Garden Structure & Pergola Design
  • Residential Garden Design
  • Environmental, Revegetation Consultation Site,
    Responsive Planting Design, Construction,
    Documentation & Observation.