HCM-210 — designated 1979-02-21
Terrace Park and Powers Place
Powers Place and 14th Street
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, 2009) stone · granite + 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 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 6 alternative-use value — parcel acres, TOC tier, TPA eligibility, zoning capacity for higher use.
overall confidence: unknown
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)
- $62,632
- assessed value
- —
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
- 6037224310
- CalEnviroScreen overall percentile
- 76.4 (decile 8)
- cleanups percentile
- 50.3
- groundwater threats percentile
- 0.0
- hazardous waste percentile
- 30.2
- toxic release percentile
- 80.2
- lead exposure percentile
- 99.7
- EnviroStor cleanup sites nearby
- —
- in CGS liquefaction zone
- no
- type-1 contamination probability (fused)
- 0.44 — moderate
- type-2 structural-risk probability
- 0.20 — low
Narrative
history
terrace park and powers place (hcm-210) is a designated los angeles historic-cultural monument whose precise construction date, original architect, and development history are not documented in the available fetched data. the designation encompasses what appears to be a residential street or parkway ensemble — a typology common to early 20th-century los angeles streetcar-era subdivision development, where landscaped median strips and parkway plantings were used to market upscale tract homes (approximately 1905–1930). the specific events, ownership chain, and any major alterations that led to hcm designation cannot be confirmed from available records and would require consultation with the los angeles office of historic resources designation file. no nrhp listing is recorded, which suggests the monument's significance was recognized primarily at the local level rather than through federal evaluation.
architectural significance
because typology data is listed as unknown and no architect of record is identified in the fetched data, a confident characterization of architectural style is not possible at this time. streetscape and parkway hcms in los angeles typically derive significance from landscape design elements — mature street trees, planted medians, curvilinear lot layouts, or period-appropriate hardscape — rather than a single building's architectural merit. comparable extant examples of street-ensemble designations in la include fremont place and the south gramercy place median parkways, though whether hcm-210 is formally analogous to these cannot be confirmed without field verification. distinctive features, if any, remain undocumented in current datasets.
neighborhood context
the tract surrounding hcm-210 records a median household income of $62,632, placing it in a moderate-income band — below the los angeles county median but not in acute distress. a five-year population decline of 670 persons is a notable negative signal, indicating either household contraction, unit conversion, or displacement pressure in the immediate census tract. no 311 service calls (encampments, dumping, graffiti) within 500 feet are recorded in the available data, which may reflect genuine order in the immediate block environment or a gap in data coverage. transit proximity and business license churn data are not available for this hcm, limiting a full picture of neighborhood trajectory. | metric | value | |---|---| | census tract | 06037224310 | | median hhi | 62632 | | 5yr δ population | -670 | | 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 genuine uncertainty: the hcm encompasses a streetscape or parkway rather than a single building, and such ensembles face diffuse but real threats from incremental private landscaping changes, utility work, and street redesign projects that do not require demolition permits. without a known prominent architect, nrhp listing, or documented adaptive reuse interest, there is no strong counterfactual case that the resource would be proactively preserved by market actors. axis b scores 0, with confidence listed as unknown — no google reviews, wikipedia pageview data, walking tour inclusion, or tripadvisor presence was recoverable, meaning tourist and cultural currency cannot be assessed. this is a data gap, not a confirmed absence of visitation, and must be treated accordingly. axes c and d both score 0 at unknown and medium confidence respectively. for c, no mills act contract, federal historic tax credits, or subsidy instruments are on record, so subsidy efficiency cannot be evaluated — the score of 0 reflects absence of data, not confirmed efficiency or inefficiency. for d, the medium-confidence score of 0 is more meaningful: 311 call volumes for encampment, dumping, and graffiti within 500 feet are all recorded as zero, suggesting the immediate streetscape is not generating measurable negative externalities. axis e scores 4 at high confidence, driven by the moderate hhi ($62,632) and a five-year population loss of 670 — the tract is not thriving but is not in acute distress, placing it just below the mid-tier threshold. axis f scores 0 at unknown confidence because parcel acreage, zoning capacity, and toc/tpa tier data are all absent; alternative use value cannot be quantified without knowing whether redevelopable land exists or what entitlement ceiling applies. the flag is reassess rather than candidate because the overall confidence rating is unknown — multiple gating axes (b, c, f) lack sufficient data to confirm or deny candidate conditions. specifically, f_min of 6 cannot be confirmed, and c or d thresholds for the candidate or-condition are not met at reliable confidence. the moderate a score (5) also falls above the a_max threshold of 4 required for candidacy. reassess is the appropriate holding category: field verification of parcel data, zoning capacity, subsidy records, and architectural typology is required before any reclassification or delisting action could be defensible.
sources
- la311: https://data.lacity.org/resource/h65r-yf5i.json?$where=within_circle(location%2c%2034.04507888233705%2c%20-118.28102581150601%2c%20152)%20and%20createddate%20%3e%20'2024-05-10'&$limit=1000 --- _generated by hcm-1200 orchestrator on 2026-05-10t23:34:52.088z._