Lloyd M. Joshel House, International Style residence in Hilltop neighborhood, Denver, United States.

The Lloyd M. Joshel House is a single-story, cube-shaped residence in Denver's Hilltop Neighborhood, built in 1951. Its flat roof has no eaves, and the exterior relies on ribbon windows, horizontally linked clerestory windows and glass curtain walls instead of ornament. Architects Joseph and Louise Marlow designed it as a cubist composition of volume and materials.

The Lloyd M. Joshel House was built in 1951, designed by the husband-and-wife team Joseph and Louise Marlow. It was designated a City of Denver Landmark on November 10, 1994, and entered the National Register of Historic Places on December 28, 1995. The nomination called it the best example of a post-World War II International Style residence in Denver.

The house's name comes from Lloyd M. Joshel, a chemist who became general manager of Dow Chemical's Rocky Flats nuclear weapons plant in 1964, and his wife Suzanne, a Denver arts patron and president of the Colorado League of Women Voters. Sculptures from her collection once stood in the garden. The couple married in 1947 and divorced in 1994.

The building preserves its original architectural features and is readily visible from the street without needing to enter the property. Visitors can observe the characteristic design elements such as large windows and clean lines from the public sidewalk.

Suzanne Joshel, who lived here after marrying Lloyd in 1947, was born in Berlin in 1921 and sent to London by her family to escape the Nazis. She later served as president of the Colorado League of Women Voters and helped pass the Voting Rights Act. Sculptures from her art collection stood among the garden plantings.