Beauport was built starting in 1908 as the summer home of interior decorator and antique collector Henry Davis Sleeper.

They preserved much of Sleeper's designs and decorations, but made some modifications, including adding their porcelain collection to the house.

It has been featured in publications including Architectural Digest, Country Living, and The Boston Globe, and has been showcased on television programs such as America's Castles.

[1] Beauport was declared a National Historic Landmark in 2003, in recognition of its distinctive architecture, its unique collection of artifacts, and for its association for Sleeper, whose design influence extended across the wealthy elite of the eastern United States.

There is a single non-contributing building on the property, a caretaker's house, which is potentially of local historic interest as an example of a prefabricated post-World War II residential structure.