William and Estella Adair Farm

The farm was established in 1910 on the west bank of the Snoqualmie River. Structures on the property include a Craftsman bungalow residence, a hay barn, milk house, milking parlor, woodshed, and other outbuildings.

The residence, built in 1915, is a ​1 ¹⁄₂-story wood-frame bungalow with a side gable.[2] The hay barn, added in 1922, is notable as the earliest extant example in the Snoqualmie Valley of the use of the bow truss or Gothic arch for the roof.[3]

One of the first milking parlors in the county was installed at Broadacre Farm in about 1950.[4] The milking parlor and milk house are part of a complex of four adjoining buildings. The complex, with additions made through the 1990s, is integrated with the hay barn.[2]

The Adairs sold the Broadacre Farm to Peter Sinnema in 1945. Sinnema expanded the existing farm complex by constructing loafing sheds on either side of the bam, adding a new tank house, and building a new Surge six-in-a-line milking parlor, one of first to be installed in the valley. Later additions include large detached loafing sheds, a new herringbone milking parlor designed for 16 cows, and a modem milk house with a 22,000 gallon tank. [2]

For many years, Broadacre Farm was the site for the annual Snoqualmie Valley Pioneer Picnic, which the Adair family first hosted in 1923.[3] Broadacre Farm was a working dairy farm until the mid-1990s.[2]