HCM-511 — designated 1991-01-11
Residence
1100 West 55th Street
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 ↗ (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 2 neighborhood health — median household income, distress indicators, displacement risk.
- F. alternative-use value 3 alternative-use value — parcel acres, TOC tier, TPA eligibility, zoning capacity for higher use.
overall confidence: unknown
Site
- lat / lon
- 33.99208, -118.29399
- parcel acres
- 0.2653971390575042 (inferred)
- typology
- sfr
- TPA / TOC
- yes — tier 2
- 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
- single permit within 5y
- 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)
- —
- 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
- distressed
- type-2 indicators (residential distress)
- vegetation overgrowth
- other indicators
- graffiti
- notes
- The Craftsman bungalow is partially visible behind a heavily rusted corrugated metal fence covered in graffiti, with vegetation overgrowth along the perimeter and a littered alley context suggesting significant neglect.
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
- 6037232600
- CalEnviroScreen overall percentile
- 84.6 (decile 9)
- cleanups percentile
- 59.6
- groundwater threats percentile
- 0.0
- hazardous waste percentile
- 68.4
- toxic release percentile
- 85.9
- lead exposure percentile
- 99.7
- EnviroStor cleanup sites nearby
- —
- in CGS liquefaction zone
- yes — designated under seismic hazards mapping act of 1990
- type-1 contamination probability (fused)
- 0.42 — moderate
- type-2 structural-risk probability
- 0.60 — elevated (liquefaction zone membership combined with pre-modern-code designation date)
Narrative
history
hcm-511 is a single-family residence designated as a historic cultural monument by the city of los angeles. specific construction date, original architect, and original occupant are not recoverable from the available dataset; all historical claims below should be treated as provisional pending archival research. single-family residences designated as hcms in los angeles typically date from the late 19th through mid-20th century and were nominated on the basis of architectural merit, association with a significant person or event, or neighborhood context. no nrhp listing is on record for this property, which limits the independent corroboration of its historical significance. no major documented events, ownership transfers of note, or physical alterations are captured in the fetched data. a full chain-of-title search and review of the original nomination file held by the office of historic resources would be required to substantiate any specific historical claims.
architectural significance
the architectural style of hcm-511 cannot be characterized from the available data. no architect of record is identified, and no stylistic descriptors were returned in the fetch. single-family hcms in los angeles span a wide range of types — craftsman bungalow, spanish colonial revival, american foursquare, mid-century modern — and without field verification or nomination-file review, no stylistic classification is defensible here. comparable extant examples cannot be cited with confidence. the absence of an identified architect of prominence means that the building's survival value under market pressure is not anchored to a recognized name, which materially affects axis a scoring.
neighborhood context
tract-level socioeconomic data for hcm-511 is entirely absent from the fetched dataset: median household income, five-year population change, business license churn, and eviction filing rates are all null. the 311 externality signals — encampments, dumping incidents, and graffiti counts within 500 feet over 24 months — are each recorded at zero, suggesting either a low-distress immediate block environment or incomplete reporting coverage. the axis e score of 2 was computed under high uncertainty and should not be treated as a reliable indicator of neighborhood health or distress; it reflects the scoring model's conservative handling of missing income and demographic data rather than confirmed neighborhood deterioration. transit proximity and toc/tpa tier are unknown. | metric | value | |---|---| | census tract | — | | median hhi | — | | 5yr δ population | — | | 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) is scored at 5 with medium confidence. a mid-range score reflects the absence of any nrhp listing, no identified prominent architect, and no evidence of recent owner investment — all signals that would otherwise support independent market survival. conversely, no data confirming active demolition pressure or developer interest is present either. the score is essentially a neutral prior under data scarcity, and medium confidence is the ceiling given the gaps. axis b (tourist/cultural currency) scores 0 with unknown confidence: there are no google reviews, no wikipedia pageview data, no walking-tour inclusion, and no nps designation. the property generates no measurable external visitation draw. axis c (subsidy efficiency) scores 0 with unknown confidence because no mills act contract, federal historic tax credit utilization, or vacancy-with-subsidy condition is documented — the property may simply not participate in subsidy programs, or the data was not retrievable; either way the axis cannot be scored meaningfully. axis d (externality load) scores 0 with medium confidence, supported by confirmed zero counts across all three 311 categories within 500 feet. this is the most data-grounded score in the set. axes e and f both carry unknown confidence due to null values for household income, parcel acreage, zoning capacity, and toc tier, making neighborhood health and alternative-use-value assessments analytically indefensible at this time. the candidate flag conditions are not fully met. while a ≤ 4 is not satisfied (a = 5) and f ≥ 6 is not satisfied (f = 0), the most decisive disqualifier is overall confidence rated 'unknown,' which fails the framework's minimum 'medium' confidence gate. the flag therefore resolves to reassess rather than candidate. the zero scores on b, c, and d do not indicate the property is performing well; they indicate measurement absence. a reassess flag is the appropriate holding state when the data substrate is too thin to support a final disposition in either direction. the reassess recommendation is defensible against pushback from urban historians precisely because it does not dismiss the designation — it flags that the evidentiary record available to this analysis is insufficient to confirm or challenge it. the correct next step is retrieval of the original hcm nomination file, a field inspection, a mills act eligibility assessment, parcel-level zoning capacity review, and acs tract data reconciliation. until those inputs are in hand, any stronger recommendation would exceed the confidence the data can support.
sources
- la311: https://data.lacity.org/resource/h65r-yf5i.json?$where=within_circle(location%2c%2033.99207780697304%2c%20-118.29398566436542%2c%20152)%20and%20createddate%20%3e%20'2024-05-11'&$limit=1000 --- _generated by hcm-1200 orchestrator on 2026-05-11t02:26:19.635z._