Devereaux House, also called the Staines-Jennings Mansion, went up in 1857 for William Staines. It was built in 1857 for William Staines and was designed by the architect William Paul. Later the house was expanded by William Jennings, who served as mayor of Salt Lake City from 1882 to 1885, again using Paul as the architect.
For generations Devereaux was a social center for the Salt Lake City area, hosting distinguished visitors, and for a short time Joseph Angell Young, a son of Brigham Young, owned the house. The building reads Victorian at a glance, with French-influenced detailing: it is brick with a cement plaster overlay and a mansard roof that forms the third floor. A wide porch wraps the south and east sides, and the interior features a large stair hall with a drawing room to the left and a library to the right.
The grand house and its large yard have been preserved in the middle of the city without a perimeter fence, so the lawn feels like a small park; William Jennings expanded and landscaped the grounds. Without a fence, the lawn runs like a small park, hemmed now by the Delta Center, the Triad Center, the Union Pacific Depot, and The Gateway development.