The growth of the railroad industry dramatically increased competition against Stolp's business, and he had to shut down the mill in 1887.

The mill store was rented to C. C. Hinckley & Co., a local producer of watchmaking tools, and J. D. Rice & Sons, a painting and decoration company.

In 1889, Stolp improved the building by rehabilitating the interior and adding an extension on the east.

The mill store is the oldest building still standing on Stolp Island today.

[2] The mill store building is 80 by 25 feet (24.4 m × 7.6 m) on the southwest corner of Downer Place and Stolp Avenue.