HCM-510 — designated 1991-01-11
Residence
5426 Budlong Avenue and 1157 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
- 33.99261, -118.29566
- parcel acres
- 0.15079284689894268 (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
- 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)
- —
- 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)
- boarded windows, structural sagging, vegetation overgrowth
- other indicators
- graffiti
- notes
- The 180° image shows the historic residence with heavily graffitied boarded garage openings, a sagging roofline, and overgrowth, indicating significant distress.
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)
- 0.44 — moderate
- type-2 structural-risk probability
- 0.60 — elevated (liquefaction zone membership combined with pre-modern-code designation date)
Narrative
history
hcm-510 is designated as a single-family residence (sfr) within the city of los angeles historic-cultural monument inventory. beyond its monument number, typology classification, and residential use designation, no verifiable build date, architect attribution, original ownership record, or major event history was retrievable from the fetched dataset. the absence of nrhp listing and architect prominence data means that whatever significance was identified at the time of designation rests in the original nomination documentation, which was not surfaced in this data pull. without those primary sources, no factual historical narrative can be responsibly constructed here. all historical claims in any subsequent review must be sourced directly from the city's original hcm nomination file.
architectural significance
no architectural style classification, comparable extant examples, or distinctive feature data were returned for hcm-510. the typology is recorded as single-family residential, which in the los angeles context spans an extremely wide range of periods and styles — from victorian-era craftsman bungalows to mid-century modern custom homes. without build date, architect record, or field photography in the dataset, no defensible architectural characterization can be offered. a physical field survey and review of the original nomination's architectural description are prerequisites before any comparative assessment against extant los angeles sfr examples can be made.
neighborhood context
tract-level socioeconomic data for hcm-510's surrounding census tract are entirely absent from the fetched dataset: median household income, five-year population change, business license churn, and eviction filing rates all returned null. the 311 externality signals — encampments, dumping incidents, and graffiti counts within 500 feet over 24 months — are each recorded as zero, which may reflect genuine neighborhood stability or may reflect a data retrieval failure (e.g., incorrect geocoding or a mismatch between the parcel address and the 311 query boundary). parcel acreage, tpa/toc tier, and zoning capacity are likewise null, making it impossible to characterize the surrounding district's trajectory, transit access, or development pressure with any confidence. | 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, indicating moderate-to-ambiguous market vulnerability. an sfr with no nrhp listing, no named architect, and no recorded adaptive reuse demand sits in the middle of the counterfactual spectrum: it is neither an iconic landmark that the market would organically preserve nor a demonstrably threatened structure about which strong claims of demolition risk can be made. the medium-confidence rating means the score is defensible but rests on type-level priors rather than property-specific evidence. axis b (tourist/cultural currency) is scored 0, reflecting the complete absence of google review data, wikipedia pageview traffic, walking tour inclusion, or nps designation — consistent with an unlisted private sfr. axis c (subsidy efficiency) scores 0 because no mills act contract, federal htc participation, or subsidy-alongside-vacancy condition was identified; however, confidence is 'unknown,' meaning an active mills act contract cannot be ruled out from this data alone. axis d (externality load) scores 0 with medium confidence: 311-derived encampment, dumping, and graffiti signals are all zero, suggesting the immediate block is not generating measurable negative spillover, though vacancy status and code complaints remain unverified. axis e (neighborhood health) scores 2, nominally indicating distress, but confidence is 'unknown' because all underlying acs and administrative inputs are null — the score is therefore unreliable and should not be used to infer genuine neighborhood conditions without independent census data lookup. axis f (alternative use value) scores 0 with unknown confidence, as parcel size, zoning envelope, and toc tier are all missing.
sources
- la311: https://data.lacity.org/resource/h65r-yf5i.json?$where=within_circle(location%2c%2033.99261143446962%2c%20-118.29566111897141%2c%20152)%20and%20createddate%20%3e%20'2024-05-11'&$limit=1000 --- _generated by hcm-1200 orchestrator on 2026-05-11t02:25:51.605z._