Bailey House (Case Study House #21) is a Mid-Century Modern house in Los Angeles, California. Built in 1959, it was designed by Pierre Koenig, and is listed on the U.S. National Register of Historic Places.
Location: Hollywood Hills, Los Angeles, California, United States
Verified facts
- Located in Hollywood Hills, Los Angeles
confidence 80/100 · 5 recorded source groups · SRC-1743, SRC-1744, SRC-6334, SRC-6335, SRC-8915 - Designed by Pierre Koenig
confidence 70/100 · 3 recorded source groups · SRC-1744, SRC-1745, SRC-1746 - Built in 1959
confidence 80/100 · 6 recorded source groups · SRC-1744, SRC-1743, SRC-1746, SRC-6334, SRC-6336, SRC-8916 - Architectural style: Mid-Century Modern
confidence 80/100 · 6 recorded source groups · SRC-1744, SRC-1745, SRC-1743, SRC-6337, SRC-6338, SRC-8917 - Historic designation: National Register of Historic Places; Los Angeles Historic-Cultural Monument
confidence 90/100 · 4 recorded source groups · SRC-1743, SRC-1745, SRC-1744, SRC-6339 - Designed by None
confidence 95/100 · 5 recorded source groups · SRC-1743, SRC-1744, SRC-6334, SRC-1746, SRC-8915
Evidence & sources
- SRC-1743 — Wikipedia — Bailey House (Los Angeles) (Tier 3, encyclopedia; retrieved June 2026)
- SRC-1744 — Los Angeles Conservancy — Bailey House (Case Study House #21) (Tier 2, institutional; retrieved June 2026)
- SRC-1745 — Docomomo US — Case Study House No. 21 (Tier 2, institutional; retrieved June 2026)
- SRC-1746 — ArchDaily — A Virtual Look Into Pierre Koenig's Case Study House #21, The Bailey House (Tier 2, journalism; retrieved June 2026)
- SRC-6334 — Architecture Lab — Case Study House #21 (Bailey House) / Pierre Koenig (Tier 3, architecture reference; retrieved June 2026)
- SRC-6335 — Etan Does LA — #52: Case Study House No. 21 (Bailey House – Hollywood Hills) (Tier 3, local landmarks blog; retrieved June 2026)
- SRC-6336 — Architectuul — Bailey House (Tier 3, architecture database; retrieved June 2026)
- SRC-6337 — Beverly Bar — Case Study House #21 (Bailey House): A Mid-Century Architectural Masterpiece (Tier 3, architecture feature; retrieved June 2026)
- SRC-6338 — Mid-Century Gems — The Case Study House Program: Bailey House (Case Study #21) (Tier 3, architecture magazine; retrieved June 2026)
- SRC-6339 — National Park Service – NPGallery, Case Study House No. 21 (National Register record) (Tier 1, government heritage register; retrieved June 2026)
- SRC-8915 — National Register of Historic Places — Registration Form, Case Study House #21 (Bailey House), NRHP ref. 13000518 (U.S. National Park Service / NPGallery) (Tier 1, official_archive; retrieved June 2026)
- SRC-8916 — Digs.net — "Pierre Koenig Case Study House No. 21 Asks $3.6M" (Digs, Los Angeles luxury real-estate journalism) (Tier 2, journalism; retrieved June 2026)
- SRC-8917 — The Spaces — "Pierre Koenig's Case Study House 21 lists for $3.6m" by Emma Tucker (architecture & design journalism) (Tier 2, journalism; retrieved June 2026)
How we verify
The entries above show the sources and confidence scores recorded in our fact ledger.
Source tiers are internal classifications, not guarantees of accuracy or independence.
Several sources may repeat the same underlying account; a source count alone does not establish independent corroboration. 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.
Frequently asked questions
Who designed Bailey House (Case Study House #21)?
Bailey House (Case Study House #21) was designed by Pierre Koenig.
Where is Bailey House (Case Study House #21) located?
Bailey House (Case Study House #21) is located in Los Angeles, California.