Indicator C3 — Duplicate or Near-Duplicate Projects

AI-verified / Na-verify ng AI Data as of October 21, 2026

Duplicate or Near-Duplicate Projects

Very similar descriptions within ~100m or identical coordinates across contracts/years.

This is a statistical anomaly or indicator worth examining — not proof of wrongdoing, fraud, or corruption against any person.

Indicator: contracts 23FA0019 and 23FA0035 have near-identical descriptions at the same coordinates (funding year 2023; ₱144.75M, ₱21.56M). Worth checking whether they cover the same works. It is possible that these are separate but adjacent or sequential works at the same site, or that one is a continuation or expansion of the other.

Public record entityConstruction of Baranghawon Flood Mitigation Structure, Tabaco City

LocationCITY OF TABACO (ALBAY), ALBAY, Region VContract 23FA0035

Amount₱21,560,000.00 sumbong source

Only contractors and government agencies named in public procurement records are shown. Private individuals are not named.

Satellite before / after

Esri Wayback · ~0.31 mLocation approximate

Before capture: 2019-09-05 · Maxar

After capture: 2025-10-31 · Vantor

Satellite comparison for public reference — not proof of completion or non-completion.

Imagery may not show small or linear works; no visible change is not evidence of wrongdoing.

Imagery © Esri, Maxar, Earthstar Geographics, and the GIS User Community

Caveats & resolution

Esri World Imagery Wayback (~0.5–1 m); dates are archive release dates, not capture timestamps.
Imagery may not show small or linear works; no visible change is not evidence of wrongdoing.
DPWH coordinates can be approximate; marker shows the imagery center (may be snapped to riverbank/coast).

Disclaimer

Click imagery to enlarge

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How this was checked

publish · confidence 0.85

Model: gpt-4.1

Prompt: v4.1

Checked: October 22, 2026

Both projects are at identical coordinates, in the same municipality, and funded in the same year. The titles are highly similar and refer to the same general location (Baranghawon, Tabaco City), with no phase, package, section, or station markers to distinguish them. The only differences are generic terms ('River Control' vs 'Flood Mitigation Structure'), which are not distinguishing markers per the rule. This fits the criteria for a potentially duplicate or overlapping project.

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Project completion

Schedule fields from DPWH transparency portal records and the Sumbong sa Pangulo flood-control list — not inferred beyond those columns.

Reported complete (DPWH): 1Ongoing: 0Delayed: 0Status unknown: 0

Project	Prog.	Target end	Actual end	Days late	Status
Construction of Baranghawon Flood Mitigation Structure, Tabaco City23FA0035Flood control	100%	October 23, 2023	September 15, 2023	No target date from DPWH, so lateness cannot be computed	completedsumbong source

Start: May 9, 2023 · Source fetched October 21, 2026

Rule Definition

Title similarity + distance or shared coordinates within municipality.

Triggering Data & citations

Identical coordinates shared by multiple contracts

{
  "contractId": "23FA0035",
  "coordinates": {
    "lat": 13.35377,
    "lon": 123.7182
  },
  "otherContracts": [
    "23FA0019"
  ]
}

Source documents

sumbong — https://raw.githubusercontent.com/rukku/sumbongsapangulo.ph-datasets/main/flood_control_projects.geojsonFetched October 21, 2026

Possible Innocent Explanations

Multi-component contracts sharing a single pin
GIS centroid placement