Valdez-Lardizabal House is a Important Cultural Property, National Museum; Registered Property, Municipality of San Nicolas, Ilocos Norte; Registered Property, Province of Ilocos Norte located at San Nicolas, Ilocos Norte, Region I.
This most imposing of residences in San Nicolas is the Valdes – Lardizabal House, built in the 1800s by Antonio Valdes, former gobernadorcillo who served in the first half of the 19th century. Fronting the town plaza, it is a grand structure built in the traditional Spanish colonial style, with a base of brick and stone and its second storey of made out of wood jutting out in a cantilevered fashion, as if floating. In its heyday, it was the most prominent residence in San Nicolas and in the whole province of Ilocos Norte.