Agnews Insane Asylum

Santa Clara, Santa Clara County, California Listed Ref. 97000829 Historic district
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Agnews Insane Asylum, California
Photo: EugeneZelenko, CC BY-SA 4.0, via Wikimedia Commons

Why it's listed

Agnews Insane Asylum, later known as Agnews Developmental Center, is a hospital campus of about 80 acres in Santa Clara, rebuilt after the 1906 earthquake destroyed the earlier buildings. Its reinforced concrete, stucco and red tile buildings follow a Mediterranean-style design and sit in a formal landscape of palms, pepper trees and wide lawns. Palm Drive leads to the administration building and the clock tower buildings, and nearly all of the main structures were drawn by Sellon and Hemmings for the State Architect. Reinforced concrete was still a new method at the time. The district was recognized for its health and medicine history and its social history. Dr. Leonard Stocking, superintendent from 1907 to 1931, ran the hospital as a model institution, removing most physical restraints and promoting research alongside care. The site also reflects early twentieth-century architecture and landscape design, and it has changed very little since about 1911. A separate cemetery is included.

Machine-generated summary. This summary was generated by a language model from the official nomination document and has not been reviewed line by line by an editor. It may contain errors. Check the source document before relying on any detail. Source: nomination document (PDF) · catalog entry. Generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29).

Period of significance1906-1941
StylesMission/Spanish Colonial Revival
Areas of significanceLandscape Architecture, Architecture, Social History, Health/Medicine
Acreage80
Boundary sourceNPS cultural-resource GIS polygon
Full listing pageAgnews Insane Asylum (property record)

What listing means for this property

This is a historic district. Buildings within its boundary are either contributing (they add to the district's significance) or non-contributing. Owners of contributing income-producing buildings can claim the 20% federal rehabilitation tax credit; homeowners should look at state credits. National Register districts impose no design review by themselves; a local historic district ordinance, if one exists, does (the difference explained).

General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.