The Wallace-Wilburn House, located at 434 East Main Street in Union, South Carolina, is a historic residence built around 1890. It is a contributing property within the East Main Street–Douglass Heights Historic District, which was added to the National Register of Historic Places in 1989.

The Wallace-Wilburn House is a two-story weatherboard residence with notable architectural elements, including:

• A central gable-roofed dormer with a Palladian-style window
• A two-story rectangular bay on the left façade
• A one-story porch with Ionic columns and a turned balustrade
• A boxed cornice with modillions and dentils
• A balconette with console brackets and recessed panels at the second story

These features contribute to the house’s distinctive appearance within the historic district.

The residence was built for William H. Wallace, a prominent figure in Union County. Wallace was a farmer, lawyer, jurist, soldier, and statesman. He served as a Confederate general during the Civil War and was a key figure in the Reconstruction-era politics of South Carolina. In 1865, Confederate President Jefferson Davis dined at the Wallace House during his travels through Union County.

The house was later owned by the Wilburn family, with Wallace Wilburn being a notable resident. He was born on February 2, 1957, to the late William Arthur and Ollie Mae Wall Wilburn.

As a private residence, the Wallace-Wilburn House is not open to the public. However, its architectural features can be appreciated from the street. Visitors are encouraged to view the exterior respectfully from public sidewalks or roads.