McIntosh Poris Architects delivers Detroit assembly plant conversion into modern loft housing
DETROIT, April 9, 2026 — McIntosh Poris Architects has completed a major Detroit assembly plant conversion, turning a historic Cadillac factory into a modern residential complex known as Amsterdam Lofts.
The project brings new life to a landmark building while preserving its architectural legacy.
Historic factory gains new purpose
Originally built in 1905, the former Cadillac assembly plant stands as the world’s first reinforced-concrete automobile factory. Today, it is listed on the National Register of Historic Places.
Now, the structure offers 90 residential units within a 74,000-square-foot space. It rises three stories and sits near the Detroit Institute of the Arts and Michigan Central Station.
Design balances preservation and modern living
The Detroit assembly plant conversion focused on retaining key historic elements. For example, the team restored the original brick façade and preserved large industrial-style windows.
At the same time, designers installed energy-efficient windows that reflect the building’s original look. In addition, they kept the iconic glass block entryway intact.
Inside, the original column grid remains visible. However, new partitions create studios, one-bedroom, and two-bedroom apartments. Each unit features high 13-foot ceilings and abundant natural light.
Creative reuse defines the project
Moreover, the design team repurposed several industrial features. The former freight elevator now serves as studio apartments. Likewise, old loading docks have been transformed into private patios.
The interiors combine modern finishes with historic textures. For instance, exposed masonry walls pair with light wood and neutral tiles. As a result, the building maintains its industrial character while offering contemporary comfort.
Engineering legacy preserved
The original factory was designed by George Mason and Julius Kahn. It used the innovative Kahn System, which allowed large open factory floors.
Because of this method, builders completed the structure in just 67 days. Today, that engineering legacy remains visible throughout the building.
Project team and vision
Greatwater Opportunity Capital commissioned the project. Meanwhile, several partners supported its delivery, including Kidorf Preservation and Albert Kahn Legacy Foundation.
Michael Poris, founding partner, emphasized the project’s purpose.
“This project reflects our commitment to preserving Detroit’s architectural legacy while creating meaningful, modern spaces,” he said.
A model for adaptive reuse
Ultimately, the Detroit assembly plant conversion highlights the value of adaptive reuse. It shows how historic industrial buildings can support modern urban living.
Furthermore, the project strengthens Detroit’s ongoing redevelopment while honoring its automotive heritage.
