Otto J. Hager House is a historic building located in Waukon, Iowa, United States.

The open entry porch is off-center and features a superimposed chamfered balcony room.

Postville limestone contrasts with the red Monona brick, and was used for the water table, first floor window sills, terrace copings, a continuous projecting belt course, chimney copings, and a surround on the stair window set.

The back of the house features a half-octagonal kitchen wing, which is in line with the main entrance.

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