HCM-143 — designated 1975-04-16
Residence
6028 Hayes 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 (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 1 externality load — code complaints, CSR cases, 311 encampment/dumping/graffiti, vacancy duration.
- E. neighborhood health 5 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
- 34.10969, -118.18649
- parcel acres
- 0.5243870620289695 (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
- partial
- vacancy proxy basis
- single permit 5 to 10y old
- last permit
- 2021
- 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)
- $77,865
- 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
- yes
- building type
- sfr
- overall condition
- well maintained
- other indicators
- none visible
- notes
- The Craftsman-style bungalow at 6028 Hayes Avenue is clearly visible heading east, appearing well-maintained with a tidy front yard, decorative iron fencing, and no visible distress indicators.
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
- 6037183701
- CalEnviroScreen overall percentile
- 60.0 (decile 6)
- cleanups percentile
- 21.1
- groundwater threats percentile
- 22.1
- hazardous waste percentile
- 35.6
- toxic release percentile
- 71.3
- lead exposure percentile
- 73.1
- EnviroStor cleanup sites nearby
- —
- in CGS liquefaction zone
- no
- type-1 contamination probability (fused)
- 0.67 — moderate
- type-2 structural-risk probability
- 0.20 — low
Narrative
history
hcm-143 is designated as a single-family residence within the city of los angeles historic cultural monuments registry. no build date, architect of record, or original owner is documented in the fetched data, and no supplementary archival records were available for this analysis. the absence of nrhp listing and architect prominence data means the basis for the original hcm designation cannot be independently verified from available sources. major events, ownership transitions, and any prior adaptive reuse or rehabilitation activity are similarly undocumented at this time, making a confident historical narrative impossible without a field investigation and archival title search.
architectural significance
the architectural style, period, and distinctive features of hcm-143 cannot be characterized from the available data. no architect of record is identified, no comparable extant examples in los angeles have been linked to this property, and no photographic or descriptive records were returned in the fetch. the typology is logged as single-family residential, which encompasses a wide range of styles present across la's housing stock — from craftsman bungalows and spanish colonial revival cottages to mid-century modern tracts. without field documentation or archival drawings, no architectural assessment can be made with defensible confidence.
neighborhood context
the tract-level data for hcm-143 shows a median household income of approximately $77,865, placing it in a moderate-income neighborhood that is neither acutely distressed nor affluent by los angeles standards. the five-year population change of -344 persons at the tract level indicates modest demographic contraction, which may reflect household size reduction, unit loss, or out-migration rather than structural decline. the 311 externality signals are effectively zero — no encampment, dumping, or graffiti incidents are recorded within the relevant radius — suggesting the immediate block environment is stable. transit proximity and toc/tpa status are unconfirmed, limiting any assessment of transit-oriented development pressure on this parcel. | metric | value | |---|---| | census tract | 06037183701 | | median hhi | 77865 | | 5yr δ population | -344 | | 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 a genuinely ambiguous counterfactual. the property lacks nrhp listing, identified architect prominence, and documented owner investment, all of which would elevate survival likelihood. however, it is a single-family residence in a moderate-income tract, a typology that is not uniformly targeted for redevelopment absent specific development pressure. without parcel size, zoning capacity, or toc tier data, the redevelopment incentive cannot be quantified, and the score represents a midpoint estimate that should not be treated as settled. axis b (tourist/cultural currency) scores 0, but this is an artifact of complete data absence — no google reviews, wikipedia pageviews, walking tour inclusion, or nps designation were returned. this should not be interpreted as a confirmed finding of zero cultural currency; it means the dataset contains no evidence either way, and confidence is logged as unknown. axis c (subsidy efficiency) also scores 0 with unknown confidence, as no mills act contract, federal htc participation, or vacancy-with-subsidy condition is documented. the property may simply be outside those programs rather than performing poorly within them. axis d (externality load) scores 0 at medium confidence, supported by the clean 311 record across encampment, dumping, and graffiti categories. this is the most reliable score in the set. axis e (neighborhood health) scores 5 at high confidence, consistent with the tract-level hhi of $77,865 and mild population contraction — a transitional-to-stable profile that does not meet the distress threshold required for candidate flagging. axis f (alternative use value) scores 0 with unknown confidence due to missing parcel acreage, zoning capacity, and tpa/toc data. overall confidence across the six axes is rated unknown, which disqualifies candidate status under the framework's confidence_min: medium gating rule. the reassess flag is appropriate given that the data record is too incomplete to support any affirmative recommendation. the critical unknowns are: architectural significance, basis for original designation, parcel development capacity, and whether any subsidy instruments are in place.
sources
- la311: https://data.lacity.org/resource/h65r-yf5i.json?$where=within_circle(location%2c%2034.10968584482023%2c%20-118.18649103834647%2c%20152)%20and%20createddate%20%3e%20'2024-05-10'&$limit=1000 --- _generated by hcm-1200 orchestrator on 2026-05-10t23:03:55.479z._