About us

Focused on Maui. Dedicated to your future.
SAM & Co. is your architecture and engineering partner, committed to reliability and getting your project done right.
We offer integrated excellence; architecture and structural engineering under one roof for efficiency and cost savings.
Our deep experience and strong relationships with local contractors mean your project stays on track.
The SAM & Co. Team
Our team brings more than a combined 90 years of experience in architecture, engineering, and construction management. We offer clients a comprehensive and practical approach to complex building challenges.

Sarah Marshall
Partner, AIA, MBA
Sarah is a licensed architect with over 20 years of expertise in architectural and structural design, project management, and construction administration. Since 2012, she has managed and contributed to numerous projects throughout Maui and its neighboring islands, encompassing seawall restoration, facade and spalling repairs, new construction, renovations, and more. Her experience includes extensive involvement in both new builds and repair initiatives on both the structural and architectural side, preparation of contract documentation, and active engagement with community organizations. Sarah’s skill set is marked by strong technical proficiency, a focus on client collaboration, and effective project delivery.
Education
- B.S. in Construction Management, Indiana State University
- Master of Business Administration, University of Illinois Urbana-Champaign
Licensure
Licensed in Hawaii

Bart T. Lupa
Partner, MBA, E.I.T.
Bart has more than 30 years of experience in construction management, structural investigations, and building envelope design. He has managed a wide variety of commercial, industrial, and residential projects, overseeing all phases from design through construction closeout. Bart’s expertise includes water infiltration and façade investigations, engineering design, and contract administration. He is committed to delivering practical, high-quality solutions and is actively involved in industry and community organizations.
Education
- B.S. in Architectural Engineering, Illinois Institute of Technology
- Master of Business Administration, DePaul University

Steven H. Lentz
Project Manager
Steve is a full-time Maui resident with approximately 10 years of experience in architectural design, structural engineering, and construction management. Since 2015, he has been actively engaged in projects involving site development, residential and commercial construction, structural evaluations, and building envelope consulting on Maui, bringing valuable local knowledge and hands-on expertise to every assignment.
Education
- B.S. in Architecture, Ball State University
- Master’s Degree, Architecture with Structure Concentration, University of Illinois Urbana-Champaign

Kevin Wisniewski
Structural Engineer, S.E., P.E
With over 27 years of experience in structural engineering, Kevin brings deep expertise in building design and construction. His work spans a wide range of components from glazed curtain walls and metal panel systems to complex medical support structures. Kevin’s material knowledge includes wood, aluminum, polycarbonate, fiberglass, fiber-reinforced plastic, terra cotta, natural stone, steel, concrete, and masonry.
Throughout his career, Kevin has collaborated closely with contractors, architects, and owners, offering strategic consultation and structural design solutions. He’s known for managing multiple projects with precision and mentoring the next generation of engineers.
Education
- B.S. in Architectural Engineering, Milwaukee School of Engineering, Milwaukee, WI
- B.S. in Management Systems, Milwaukee School of Engineering, Milwaukee, WI
Licensure
Licensed in 47 states, the District of Columbia, and Puerto Rico
