The Charles F. Ranzow and Sons Building is a historic building located on Lot 1, Block 18 of the original town of Davenport, Iowa, United States.

[2] The building was individually listed on the Davenport Register of Historic Properties in 2000.

Wallpaper, paints, and oils were sold in the western section, and the eastern part functioned as a sash and door warehouse.

The building currently houses the River Cities' Reader and AdMospheres, an advertising agency.

[3] It features an overhanging bracketed metal cornice and a centralized broken pediment above.