The Ahearn House and Summer House are a pair of houses at 450 Pamet Point Road in Wellfleet, Massachusetts. The main house was built sometime after 1817, and is known to have been built by 1851, when the property was sold by Daniel Lombard, its probable builder, to Justun Williams. The house remained in the Williams family into the 20th century, when it was owned for many years by Joseph Ahearn. The house has erroneously been associated in a HABS survey with an 18th century individual, David Curran. The house is a 1.5 story timber frame cottage, with Federalist styling. The summer house, located on the same property within the Cape Cod National Seashore, is a single story timber frame cottage, that may have been on the property when Williams purchased it in 1851. The summer house has a post-World War II shed-roofed addition.
The house was built in 1851 and added to the National Register of Historic Places in 1984.