Joseph Olpin House

The Joseph Olpin House at 510 Locust Ave. in Pleasant Grove, Utah, United States, was built in 1874 or 1875, by Joseph Olpin, a skilled mason. It has also been known as the Edward L. Platt Residence. It was listed on the National Register of Historic Places in 1977.

It is a two-story rectangular building built of stone with a brick one-and-a-half story rear addition. Its symmetrical front is three bays wide, and has wooden lintels above its six-over-six windows. It has two gable end chimneys. The one-and-a-half-story brick addition is of broken saltbox form, with brick laid in stretcher bond. The addition's rear door and window bays have segmented arches.