Lantarnam Hall

Lantarnam Hall is a Tudor Revival hall in Los Altos Hills, California. Built in 1916, it was designed by John H. Powers, and is listed on the U.S. National Register of Historic Places.

Location: Los Altos Hills, California, United States

Verified facts

• Located in Los Altos Hills
  confidence 80/100 · 4 independent sources · SRC-2262, SRC-2263, SRC-2265, SRC-2264
• Designed by John H. Powers
  confidence 70/100 · 2 independent sources · SRC-2262, SRC-2264
• Built in 1916
  confidence 90/100 · 4 independent sources · SRC-2262, SRC-2263, SRC-2264, SRC-6661
• Architectural style: Tudor Revival
  confidence 80/100 · 4 independent sources · SRC-2262, SRC-2265, SRC-2263, SRC-2264
• Historic designation: National Register of Historic Places
  confidence 95/100 · 5 independent sources · SRC-2263, SRC-2265, SRC-2262, SRC-6744, SRC-6745

Evidence & sources

• SRC-2262 — National Register of Historic Places Inventory–Nomination Form: Lantarnam Hall (Tier 1, official_archive; retrieved June 2026)
• SRC-2263 — Lantarnam Hall — Wikipedia (Tier 3, encyclopedia; retrieved June 2026)
• SRC-2264 — Lantarnam Hall (Morgan Estate) — Clio (Tier 2, institutional_page; retrieved June 2026)
• SRC-2265 — National Register #85003189: Lantarnam Hall — NoeHill Travels in California (Tier 3, reference_site; retrieved June 2026)
• SRC-6661 — Los Altos Town Crier (losaltosonline.com) — historic Morgan Manor (Tier 2, local newspaper of record; retrieved June 2026)
• SRC-6744 — NBC News – Silicon Valley historic home includes a secret room (Tier 1, news article; retrieved June 2026)
• SRC-6745 — National Park Service – NPGallery Asset Detail, Lantarnam Hall (NRIS 85003189) (Tier 1, official register record; retrieved June 2026)

How we verify

Every fact above is independently corroborated by at least two reputable sources and
confidence-scored before publication. Claims that cannot clear that bar are withheld. We show the
street address only for non-residential public landmarks (museums, commercial and civic buildings,
publicly documented filming-location sites); the exact addresses of private residences and any
personal information are structurally barred from publication. Last reviewed June 2026.