The complex of buildings reflects the varied uses of the property over its history. The major historical constructions are a brick granary and millpond from the original mill built by James Lick around 1855, the large house built by Lick around 1858 and a late Victorian-era office building.

Lick built this ItalianateVictorian mansion between 1858 and 1860 next to his flour mill. The mansion is constructed of native redwood featuring detailed woodwork and imported marblefireplaces in each of its 24 rooms.

His farm background helped him realize the potential of the site for agricultural production. Around the mansion and mill, Lick developed a highly successful orchard operation and pioneered the introduction of new fruits and horticultural techniques. Imported specimens include the large cork oaks on the property planted by Lick himself.