The J. B. Evans House (now known as the Sandoway Discovery Center and formerly known as the Sandoway House Nature Center) is a historic house located at 142 South Ocean Boulevard in Delray Beach, Florida, United States. It retains its essential historic architectural integrity, and is a landmark in Delray Beach.

The house has a two-story, wood-frame structure, and was originally constructed as a single-family residence. Built in 1936, during the Depression as a seasonal residence, the construction represents what locally is known as Resort Colonial Style. It has an irregular floor plan and was built on a concrete slab foundation. The first story has horizontal clapboard, and the second story is board and batten. The house has a composition-shingled complex hip roof that is low-pitched and has a brick chimney in the center. The windows are filled with 6/6 double-hung wooden sashes which are protected by operable louvered shutters.

It was added to the U.S. National Register of Historic Places on March 28, 2002.

The Sandoway Discovery Center is a coastal ecosystems and marine life center. It features native plants, live native and invasive reptile species, a coral reef pool with sharks and fish, and a large collection of shells from around the world. The center offers environmental education programs and classes.

• Sandoway Discovery Center
• Sandoway House Nature Center at Florida's Office of Cultural and Historical Programs