field reconnaissance — broader physical visit list — 2026-05-12
Field reconnaissance
a broader list of historic-cultural monuments worth physically visiting to look for structural distress signs that public open-data does not surface. the candidates page surfaces HCMs with formal signals (code complaints, CSR cases, contamination context). this list adds the long tail: older residential designations on quiet streets where nobody reports the issues, where the building could be quietly deteriorating without ever generating a permit gap or a 311 case. the city does not know about these — only physical inspection catches them.
filter: typology in (sfr, multifamily), designation year ≤ 2005, not load-bearing (no active Mills Act contract), not exempt (religious / federal). this surfaces 342 HCMs across 141 geographic clusters. clusters of 3 or more HCMs within ~1km are surfaced first as efficient driving-route candidates.
each row carries a fresh Google street view deep link that opens at the parcel coordinates. drive there, walk the block, look at the building from different angles. the orchestrator's pre-captured street view clips are not reliable here — they often did not frame the building. download the csv at the bottom of the page to plan a route offline.
Findings from the 2026-05-12 vision sweep
claude vision (sonnet-4-6) was run on all 342 HCMs — $13.14 total ($3.67 anthropic + $9.46 Google maps). distribution: 15 distressed, 124 fair, 172 well_maintained, 31 cannot_determine (street view doesn't frame the building). the 15 distressed verdicts are listed below — sorted by indicator count. three neighborhood clusters of distress emerged: adjacent properties showing the same condition, which suggests block-level or common-ownership patterns worth investigating as a group rather than individually.
Alvarado street cluster (westlake)
two adjacent HCMs on the 1100 block of south alvarado, both designated 1987, both showing the same indicator set:
510 is the strongest of the two — boarded windows + structural sagging signals genuine vacancy + structural compromise.
Standalone distressed properties
HCM-557 wilbur f. wood house (4020-4026 bluff place, 1992) — fire_damage, structural_sagging, vegetation_overgrowth. fire_damage is the rarest indicator in the vocabulary — this is a unique find.
none of these 15 HCMs appear on the formal candidates page — they have no recent code complaints, no open CSR cases, and no recent permit gaps that the original rubric was sensitive to. they are exactly the type of distress the formal data channels miss: quiet residential streets where the city doesn't get called, where owners live with deterioration for years before anything becomes official. vision caught them; the field-reconnaissance approach validates the gap the user surfaced.
What to look for in person that data does not tell us
Structural distress on quiet streets
visible foundation settlement (the building tilts, or one side of the porch sits lower than the other), roof sag, sagging eaves, peeling stucco revealing damaged framing, masonry cracks larger than ~1/4 inch with offset between the sides (not just hairline cracks, those are normal), structural diagonals where there should be straight lines. quiet neighborhoods do not generate code complaints; owners often live with deterioration for years before anything formal happens.
Quiet vacancy indicators
mail piled up, blinds permanently closed, weeds in cracks of driveway, no vehicle ever present across multiple drive-bys, mailbox lid down for weeks, package piled on porch, hose left running, lawn dead in a green neighborhood. these are the signals a quiet sfr vacancy produces — none of them generate a 311 case.
Fire / earthquake / accident damage left unaddressed
scorched siding around windows or eaves, tarped section of roof, plywood patches over openings other than windows, blue tarp draped over a wall, chimney that ends mid-stack (broke off in an earthquake, never rebuilt), garage door that does not close cleanly. these are signs of an event the owner couldn't or wouldn't repair fully — and the HCM-related laws prevent the simple resolution (demolish and rebuild).
Operational closure on commercially-licensed residential
some multifamily HCMs operate as licensed apartment buildings. signage taped over, "for lease" signs that have been there too long, no recent listing on rental sites, mailboxes with no names, lockbox on the front gate but no real-estate activity — these point at operational closure without formal vacancy. the burnside apartment cluster (HCM-423/424/425) was discovered this way: a sibling property at 616 burnside is listed as "permanently closed" on Google maps, suggesting the whole block is operationally non-viable.
Access notes
do not enter private property. observations should be made from the public right-of-way (sidewalk, public street). photograph what is visible from the sidewalk. if a building's condition is concerning, note the APN (visible on the per-HCM detail page) and report to la dbs at LADBS.org via the substandard / unsafe building complaint process (LAMC 91.8902). do not knock on doors — formal access for structural assessment requires owner consent + a structural engineer scope of work (see tier 3 site visit queue).
tap a cluster heading to expand. clusters sorted by size (most HCMs first). within each cluster, HCMs sorted by vision condition (abandoned / distressed first, well_maintained last) when vision data exists.