HCM-327 — designated 1987-09-22
Thomas Potter Residence
1135-1141 South Alvarado 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 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
- 34.04927, -118.28190
- parcel acres
- 0.749136213737933 (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
- 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)
- $40,574
- 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
- multifamily
- overall condition
- distressed
- type-2 indicators (residential distress)
- boarded windows, plywood patches, vegetation overgrowth
- other indicators
- graffiti
- notes
- The historic Potter Residence complex is partially visible from multiple angles, showing significant distress including plywood-covered openings, deteriorated siding, and heavy graffiti on perimeter fencing, with the structure appearing neglected and in poor condition.
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
- 6037209810
- CalEnviroScreen overall percentile
- 89.5 (decile 9)
- cleanups percentile
- 59.1
- groundwater threats percentile
- 22.1
- hazardous waste percentile
- 24.7
- toxic release percentile
- 79.3
- lead exposure percentile
- 98.6
- EnviroStor cleanup sites nearby
- —
- in CGS liquefaction zone
- no
- type-1 contamination probability (fused)
- 0.41 — moderate
- type-2 structural-risk probability
- 0.20 — low
Narrative
history
the thomas potter residence (hcm-327) is a single-family residential structure designated as a historic-cultural monument by the city of los angeles. specific construction date records are not retrievable from the current data fetch; the build date is presumed to fall within the late 19th or early 20th century (approximately), consistent with the era of early residential subdivision activity in los angeles. the original occupant, thomas potter, was likely a figure of modest local prominence — common among early residential hcm designees — though no architect of record is identified in available documentation, and no national register of historic places listing has been confirmed. no major documented events, fires, or significant ownership transfers are surfaced in the fetched dataset, leaving the property's post-designation history largely opaque to this analysis. the absence of mills act enrollment and federal historic tax credit activity suggests the property has not been subject to formal preservation financing since (or at time of) designation.
architectural significance
without an architect of record or a confirmed construction date, precise stylistic classification is not possible at the confidence level required for a public-facing document. residential hcms of this vintage in los angeles typically represent craftsman bungalow, colonial revival, or victorian-era vernacular typologies, though this cannot be confirmed for hcm-327 without field inspection or archival review. comparable extant examples of early single-family residential hcms exist across neighborhoods including lincoln heights, boyle heights, and west adams, many of which share the challenge of limited architectural documentation. distinctive features, if any, remain unverified in the current dataset. a qualified architectural historian should conduct a physical survey before any stylistic claim is made in official policy documents.
neighborhood context
the census tract surrounding hcm-327 records a median household income of $40,574 — below the los angeles citywide median (approximately $71,000 as of the most recent acs five-year estimates), placing this tract in the lower tercile of city neighborhoods by income. population has grown modestly by 10 persons over the five-year observation window, indicating stability rather than either sharp decline or rapid gentrification pressure. no 311 service request data (encampments, dumping, graffiti) within 500 feet of the parcel is elevated — all three categories return zero counts — which suggests the immediate block environment is not acutely distressed at the time of data collection. transit proximity, zoning capacity, and toc/tpa tier data are not available for this record, limiting a full assessment of transit access and development feasibility in the submarket. | metric | value | |---|---| | census tract | 06037209810 | | median hhi | 40574 | | 5yr δ population | 10 | | 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. the property is not nrhp-listed, has no identified prominent architect, and no confirmed recent owner investment or mills act contract — all of which would normally suggest elevated demolition or neglect risk. against that, the low 311 externality load and modest neighborhood stability provide some basis for inferring the building is not under acute pressure. the medium confidence score reflects genuine uncertainty: without parcel sale history, assessed value, or adaptive reuse demand data for the submarket, the counterfactual cannot be resolved. axis b (tourist/cultural currency) scores 0 with unknown confidence — no google reviews, no wikipedia pageview data, no walking tour inclusion, and no nps designation are recorded. this does not confirm the building has zero cultural salience, but no evidence of visitor-generating significance exists in accessible data. axes c and d (subsidy efficiency and externality load) both score 0 at unknown and medium confidence, respectively. the zero score on c reflects the complete absence of mills act, htc, or documented subsidy — meaning there is no subsidy leakage to measure, not that efficiency is good. axis d's medium-confidence zero is more meaningful: the 311 call categories within 500 feet are all zero, and no code complaints are surfaced, suggesting the property is not currently generating measurable negative spillover. axis e (neighborhood health) scores 5 at high confidence, anchored by the $40,574 median hhi — a data-rich acs signal placing the tract in a genuinely stressed income band, partially offset by a positive if small population trend. axis f (alternative use value) scores 0 with unknown confidence due to missing parcel acreage, zoning capacity, and tpa/toc tier data; no alternative use assessment is supportable. the reassess flag is appropriate: conditions for candidate status are not met because f cannot be confirmed at or above 6 and confidence across the framework is overall 'unknown' — falling short of the 'medium minimum' gate. at the same time, data sparsity is severe enough that maintain or do_not_touch designations would be analytically indefensible. the honest disposition is that this record requires field validation and administrative data recovery before any policy action.
sources
- la311: https://data.lacity.org/resource/h65r-yf5i.json?$where=within_circle(location%2c%2034.04926658222444%2c%20-118.28190053266232%2c%20152)%20and%20createddate%20%3e%20'2024-05-11'&$limit=1000 --- _generated by hcm-1200 orchestrator on 2026-05-11t00:29:26.740z._