The Combellack-Blair House is characterized by a mixture of Queen Anne, Italianate, Stick-Eastlake, and Gothic architectural elements. The home is considered to be the most elaborate Victorian in present-day Placerville.

The exterior landscaping of the house is characterized by a facsimile of the original picket fence reproduced from an old photograph. Many of the domestic plants and trees on the grounds are believed to be original. The home is exemplified by the Gothic and Stick-Eastlake style cupola atop the roof; accessed by a free-hanging circular staircase from the front parlor.

Overall the property retains integrity of workmanship, materials and setting, unlike many of the remaining late-nineteenth century houses in present-day Placerville.

Adapted from the NRHP nomination.