The Longyear Building is a commercial structure located at 210 North Front Street in Marquette, Michigan.

John M. left school at age fifteen and worked at a variety of jobs coming to Marquette in 1873.

Between 1873 and 1878, Longyear assessed the value of timber and mineral resources on land throughout the Upper Peninsula for a variety of clients.

Longyear decided to construct his own office building, and purchased a lot, then occupied by a boarding house, on the corner of Front and Bluff Streets.

He hired the architectural firm of Charlton and Kuenzli to design the office building and John Simon Wahlman as a general contractor.

Construction of the Longyear Building began in late spring 1916 and the structure was complete by early 1917.

However, the various holdings of these companies fluctuated in value through the twentieth century, as mining, timber, and land interest became more or less valuable.

[2] In 2001, JML Heirs, LLC, a company founded by John Munroe Longyear,[3] undertook an extensive renovation of the building.

[2] On the interior, there is a vestibule with original terrazzo floor, with double door leading to a short hall with the main staircase and the entrance to the Longyear offices.