HCM-149 — designated 1976-03-03
Ennis - Brown House
2607 Glendower Avenue
public open-data signals are too weak to classify; designation may be load-bearing via procedural friction, may be recognition only — rubric cannot tell without a demolition-pressure proxy
cannot classify — public open-data signals are too weak. would need a demolition-pressure proxy to resolve.
street view ↗ satellite ↗ big orange landmarks ↗ (bariscale, 2008) concrete + stucco (orchestrator-captured imagery is not building-aimed — use these for HITL verification)
Six-axis scores
- A. would-survive 5 probability the structure would survive market forces without HCM designation. low = needs protection.
- B. tourist currency 0 tourist and cultural currency — Wikipedia pageviews, walking-tour inclusion, public visitation evidence.
- C. subsidy efficiency 0 subsidy efficiency — Mills Act and federal HTC value vs preservation outcome. zero means no active subsidy.
- D. externality load 0 externality load — code complaints, CSR cases, 311 encampment/dumping/graffiti, vacancy duration.
- E. neighborhood health 9 neighborhood health — median household income, distress indicators, displacement risk.
- F. alternative-use value 6 alternative-use value — parcel acres, TOC tier, TPA eligibility, zoning capacity for higher use.
overall confidence: unknown
Site
- lat / lon
- 34.11613, -118.29259
- parcel acres
- 0.8396819541793085 (inferred)
- typology
- sfr
- TPA / TOC
- yes — tier 1
- zoning capacity
- —
- nrhp listed
- no
- architect prominence
- —
Condition + subsidy
all "condition" fields below are proxies derived from LADBS permit history, 311 CSR cases, and code complaints. none of these directly measures occupancy. the vacancy line shows the proxy value and the specific rule that produced it; readers should treat "active" as "construction permits filed recently," not "people live or work here."
- vacancy proxy
- active
- vacancy proxy basis
- recent investment over 250k in 60mo
- last permit
- 2023
- permits last 24mo
- 0
- code complaints 24mo
- 0
- CSR open cases
- 0
- Mills Act contract
- no — not in la OHR appendix a (2019 list of Mills Act properties)
- federal HTC
- no
- Wikipedia pageviews 12mo
- —
- walking-tour inclusion
- no
- median hhi (tract)
- $161,354
- assessed value
- —
Street view vision classification
claude vision analyzed 4 Google street view captures (n/e/s/w from the parcel coordinates) for visible distress indicators. this is an automated screening — false positives and negatives both happen, and "well_maintained" only means the visible facade is intact; internal structural condition is not assessable from street view.
- building visible
- partial
- building type
- sfr
- overall condition
- fair
- type-2 indicators (residential distress)
- vegetation overgrowth
- notes
- The Ennis House's distinctive textile-block wall is visible in the 180° and 270° images; heavy vegetation partially obscures the structure but no severe structural distress is apparent.
Contextual signals (GIS)
these are contextual proxies — signals derived from spatial context, not direct measurements of the property. they help infer hidden variables (contamination probability, structural risk) that public open-data does not measure directly. source: cal OEHHA CalEnviroScreen 4.0 (cumulative pollution burden by census tract).
- census tract
- 6037189202
- CalEnviroScreen overall percentile
- 58.5 (decile 6)
- cleanups percentile
- 0.0
- groundwater threats percentile
- 0.0
- hazardous waste percentile
- 63.9
- toxic release percentile
- 70.9
- lead exposure percentile
- 68.8
- EnviroStor cleanup sites nearby
- —
- in CGS liquefaction zone
- no
- type-1 contamination probability (fused)
- 0.13 — low
- type-2 structural-risk probability
- 0.20 — low
Narrative
history
the ennis house, commonly known as the ennis-brown house, was constructed in 1924 in the los feliz neighborhood of los angeles. it was designed by frank lloyd wright for charles and mabel ennis and represents one of the last and largest of wright's four los angeles textile block houses, the others being the hollyhock house (1921), the millard house (1923), and the freeman house (1924). wright employed his proprietary poured-concrete block system, using approximately 27,000 patterned blocks derived from a pre-columbian mayan motif. the property changed hands multiple times over the twentieth century; notable later owners include the trust for preservation of cultural heritage and, subsequently, billionaire ron burkle, who acquired it in 2011 (approximately) and undertook substantial seismic retrofitting and restoration work following significant structural damage sustained during the 1994 northridge earthquake. the house has served as a filming location for numerous hollywood productions, including 'blade runner' (1982) and 'the house on haunted hill' (1999), contributing to its cultural footprint beyond its architectural significance. it was listed on the national register of historic places in 1971 and designated a los angeles historic-cultural monument (hcm-149) under city ordinance.
architectural significance
the ennis house exemplifies wright's textile block style, a system he developed specifically for southern california in the early 1920s as a cost-conscious alternative to conventional construction using locally available decomposed granite aggregate cast into patterned concrete modules. the building's massing is monumental and horizontal, referencing mayan temple architecture through its battered walls, broad terraces, and interlocking block pattern—a motif wright called the 'textile' owing to the interlaced steel rods running through the block cavities. among the four extant wright textile block houses in los angeles, the ennis house is the largest and most technically ambitious; the freeman house (highland avenue) and millard house (pasadena) provide direct comparanda but are substantially smaller in footprint. the interior features wright's characteristic organic spatial sequence, with low entry compression giving way to expansive living volumes framed by art-glass windows. no other structure in los angeles replicates this combination of scale, material system, and provenance.
neighborhood context
the ennis house sits within a los feliz census tract reporting a median household income of approximately $161,354—well above citywide and countywide medians—with a five-year population increase of 842 persons, indicating a stable, appreciating residential submarket rather than one under displacement or disinvestment pressure. the 311 load proxies (encampment, dumping, and graffiti counts) all register at zero within the 500-foot radius, consistent with a low-density hillside residential setting that generates minimal externality calls. transit proximity and toc/tpa data are absent from the fetched record, but the hillside topography and parcel configuration are consistent with limited transit catchment. the neighborhood trajectory is unambiguously healthy by the scoring framework's indicators. | metric | value | |---|---| | census tract | 06037189202 | | median hhi | 161354 | | 5yr δ population | 842 | | 311 within 500ft (24mo) | 0 | | encampment 311 calls | 0 | | ladbs code complaints (24mo) | — | | last permit year | — |
subsidy and condition
| field | value | |---|---| | mills act | — | | federal htc | — | | vacancy status | — |
classification reasoning
axis a (survival without protection) scores 5 at medium confidence, reflecting genuine ambiguity. the building's extreme rarity—the only wright textile block house of this scale—and its demonstrated attraction to high-net-worth preservation-motivated buyers (evidenced by burkle's documented restoration investment) argue for survivability above the candidate threshold of ≤4. however, the structural fragility exposed by northridge, the high ongoing maintenance cost of the textile block system, and the absence of confirmed current mills act or federal historic tax credit contracts introduce real counterfactual risk. a score of 5 is defensible but sits precisely at the boundary, and field confirmation of active subsidy instruments would materially alter this reading. axis b (tourist/cultural currency) scores 0 solely due to missing data—google reviews, wikipedia pageviews, and walking tour inclusion are all null in the fetched record, not because the evidence is negative. the ennis house's film appearances and architectural prominence strongly suggest b would score considerably higher with complete data; a b of 0 here is an artifact of data absence, not a meaningful signal. axes c and d score 0 for the same reason: subsidy and code-complaint data are absent, not confirmed negative. axis e scores 9 at high confidence, reflecting the tract's high median hhi and positive population trajectory—the surrounding neighborhood is among the healthiest in the framework's scoring range. axis f scores 0 due to missing parcel acreage and zoning capacity data; given the hillside sfr context and monument status, redevelopment alternative use value is likely low, but this cannot be confirmed without parcel data. the candidate flag conditions require a ≤ 4, b ≤ 3, c ≥ 6 or d ≥ 6, e ≤ 5, and f ≥ 6—none of these thresholds are met by the available data. e alone disqualifies candidate status at 9. the overall confidence is rated 'unknown' because four of six axes have unknown or data-absent confidence ratings. reassess is the correct flag given pervasive data gaps and the architectural significance that warrants field verification before any programmatic decision.
sources
- la311: https://data.lacity.org/resource/h65r-yf5i.json?$where=within_circle(location%2c%2034.11613334895829%2c%20-118.29259147199832%2c%20152)%20and%20createddate%20%3e%20'2024-05-10'&$limit=1000 --- _generated by hcm-1200 orchestrator on 2026-05-10t23:07:33.592z._