Youngerman Block is a three-story commercial building in downtown Des Moines, Iowa, incorporating Italianate architecture, with later alterations that introduced Art Deco detailing.

He became a prominent local stonemason, participating in the construction of the original Polk County Courthouse in 1861, and establishing a brickmaking business.

An 1896 account stated that Youngerman "has erected many of the large public business and manufacturing buildings, also many of the fine residences, churches and school-houses of Des Moines...." About the 1891 building it states "In 1890 he erected and still owns the Youngerman Block, a handsome brick block, eight stories in height, 132 feet front on Fifth street and 66 feet on Mulberry street.

[2] The Youngerman Block is a three-story masonry structure abutting the NRHP-listed Randolph Hotel, which lies to its south on 4th Street.

The upper levels are faced with "asbestine" made by Youngerman's manufacturing operation, all presently painted gray.

The upper two floors on the street side feature eight tall, narrow arched windows with flattened tops on each level.