HCM-102 — designated 1972-10-04
Residence
1030 Cesar E. Chavez Avenue
stone-family or non-stone masonry construction per bariscale material classification — the envelope is the artifact, architectural-significance argument unambiguous regardless of per-axis rubric signals. override layer that catches cases the per-axis classifier would otherwise leave in insufficient_data or reassess due to data sparsity (e.g. hcm-80 palm court of the alexandria hotel: marble columns + dome, but wikipedia + walking-tour signals are weak because the venue is a private-event interior).
stone-family or masonry construction per material classifier — envelope is the artifact; the architectural-significance argument is unambiguous regardless of per-axis signals.
street view ↗ satellite ↗ big orange landmarks ↗ (bariscale, 2008) brick + adobe (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 4 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
- 34.05351, -118.22487
- parcel acres
- 0.18273710602901552 (inferred)
- typology
- sfr
- TPA / TOC
- yes — tier 3
- 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
- 2022
- 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)
- $54,250
- 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
- other indicators
- graffiti, empty no vehicle
- notes
- A dark Victorian-era residence is partially visible behind a tall iron fence topped with razor wire in the westward image, with heavy graffiti on the perimeter wall visible to the north, suggesting a secured but potentially neglected historic property.
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
- 6037203500
- CalEnviroScreen overall percentile
- 99.5 (decile 10)
- cleanups percentile
- 98.7
- groundwater threats percentile
- 85.9
- hazardous waste percentile
- 97.9
- toxic release percentile
- 79.1
- lead exposure percentile
- 96.1
- EnviroStor cleanup sites nearby
- —
- in CGS liquefaction zone
- no
- type-1 contamination probability (fused)
- 0.83 — high (CalEnviroScreen tract burden + parcel-level EnviroStor proximity both signal contamination context)
- type-2 structural-risk probability
- 0.20 — low
Narrative
history
hcm-102 is designated as a single-family residence within the city of los angeles historic cultural monument registry. beyond its hcm designation number and residential typology, the available record contains no architect attribution, no confirmed construction date, no documented original owner, and no recorded major events associated with the property. the absence of nrhp listing suggests the property has not been independently evaluated at the federal level for historical significance, or that such an application was never pursued. any claim about build date, architectural authorship, or occupant history would be speculative and is therefore omitted pending field research and archival verification.
architectural significance
no architect of record is documented in the fetched data, and no stylistic classification can be responsibly assigned from available inputs alone. single-family residences designated as hcms in los angeles span a wide range of periods and styles — craftsman bungalows, spanish colonial revival cottages, mid-century modern case study adjacents, and vernacular worker housing among them. without physical survey data, photographic documentation, or permit history, no meaningful comparison to extant examples in los angeles can be offered. this gap is itself analytically significant and warrants field verification before any preservation decision is finalized.
neighborhood context
the tract-level data indicates a median household income of $54,250, which sits modestly below the citywide los angeles median and is consistent with a working- or lower-middle-class district under moderate fiscal pressure. the five-year population change of -153 persons signals demographic contraction rather than growth, suggesting the surrounding neighborhood is experiencing either out-migration, household size reduction, or both — a pattern often associated with housing cost pressure, disinvestment, or both simultaneously. no 311 load data (encampments, dumping, graffiti) are elevated in the immediate vicinity, and no transit proximity or toc/tpa designation is recorded, leaving transit-oriented redevelopment potential unconfirmed. taken together, the neighborhood presents as a modestly distressed, slowly contracting district, scoring e=4 with high confidence. | metric | value | |---|---| | census tract | 06037203500 | | median hhi | 54250 | | 5yr δ population | -153 | | 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 (would_survive_without_protection) scores 5 at medium confidence, reflecting genuine uncertainty: no nrhp listing removes a key market-survival anchor, no architect prominence is documented, and no owner investment data exist. a mid-range score is defensible but not definitive — a prominent but unrecorded architect or recent renovation could shift this materially. axis b (tourist/cultural currency) scores 0; there are no google reviews, no wikipedia pageviews, no walking tour inclusion, and no nps designation on record. whatever local significance justified the original hcm designation, it does not generate measurable external visitation or cultural draw under any detectable metric. axes c (subsidy efficiency) and d (externality load) both score 0, but for different analytical reasons: c is 0 because no mills act contract, federal htc, or subsidy of any kind is documented — meaning there is no subsidy to evaluate for efficiency, not that the subsidy is performing well. d scores 0 because no code complaints, fire calls, or 311 load is recorded, indicating the property is not currently generating observable negative spillovers. axis e scores 4 at high confidence, driven by the below-median hhi and the five-year population decline; the neighborhood is under measurable stress, placing it squarely within the distressed/transitional threshold. axis f scores 0 because parcel acreage, zoning capacity, and tpa/toc status are all unknown — alternative use value cannot be assessed, not confirmed as negligible. the flag of reassess rather than candidate reflects that two gating conditions for candidate status are unresolvable from existing data: the c/d threshold (requiring c≥6 or d≥6) cannot be met because d=0 reflects data absence rather than confirmed low externality, and f=0 likewise reflects data absence rather than a confirmed low alternative-use-value parcel. more critically, overall confidence is rated 'unknown' because three axes — b, c, and f — carry unknown confidence. the framework requires at minimum medium confidence across gating axes for a candidate designation to be issued. promoting this record to candidate on the basis of incomplete data would risk misallocating enforcement or mills act review resources. field inspection, permit history retrieval, parcel data reconciliation, and a subsidy audit are the minimum steps needed to resolve the ambiguity. in practical terms, hcm-102 as currently documented is an hcm in name with an almost entirely hollow evidentiary record. the e=4 neighborhood score and a=5 mid-range survival score do not individually disqualify it from continued protection, but neither do they affirmatively justify it. the honest analytical position is that this record cannot be evaluated with the rigor the framework demands, and the reassess designation reflects that directly.
sources
- la311: https://data.lacity.org/resource/h65r-yf5i.json?$where=within_circle(location%2c%2034.0535132284434%2c%20-118.224868125539%2c%20152)%20and%20createddate%20%3e%20'2024-05-10'&$limit=1000 --- _generated by hcm-1200 orchestrator on 2026-05-10t22:43:44.027z._