Indicator C5 — Pattern Consistent with Contract Splitting

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

Pattern Consistent with Contract Splitting

Multiple similar contracts to the same contractor/DEO just under a threshold in a short window.

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

Indicator: 6 contracts awarded to PHILSOUTH BUILDERS INC FORMERLY:PHILSOUTH BUILDERS by the same office started within 31 days, each between ₱42.5M and ₱50M (just under the ₱50M threshold), with 4 in the same municipality. It is common for river control projects to be split across different rivers or sites within a municipality for technical or logistical reasons.

Public record entityConstruction of Omanod River Control Structure, Sta. Catalina, Negros Oriental

LocationSANTA CATALINA (NEGROS ORIENTAL), NEGROS ORIENTAL, Region VIIContract 22HL0077

Amount₱49,000,000.00 sumbong source

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

Satellite before / after

Esri Wayback · ~0.46 mLocation approximate

Before capture: 2019-01-17 · Maxar

After capture: 2019-01-17 · Vantor

No imagery since construction began — latest capture 2019-01-17

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 0.98

Model: gpt-4.1

Prompt: v4

Checked: October 22, 2026

This is a textbook C5 case: six contracts, all just under the ₱50M threshold, awarded to the same contractor by the same DEO within 31 days. Four are in the same municipality, and the titles are similar but name different rivers or locations, as expected for C5. The code already confirmed the cluster math and thresholds. There is no evidence of a data artifact.

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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 Omanod River Control Structure, Sta. Catalina, Negros Oriental22HL0077Flood control	100%	March 8, 2023	March 8, 2023	—	completedsumbong source

Start: April 7, 2022 · Source fetched October 21, 2026

Rule Definition

≥3 contracts within 120 days, each 85–100% of ₱50M threshold, similar titles.

Triggering Data & citations

Cluster of contracts just under procurement threshold with similar scope

{
  "deo": "Negros Oriental 3rd District Engineering Office",
  "contractId": "22HL0077",
  "contractor": "PHILSOUTH BUILDERS INC FORMERLY:PHILSOUTH BUILDERS",
  "windowDays": 120,
  "clusterSize": 6,
  "thresholdPhp": 50000000,
  "contractCostPhp": 49000000,
  "averageTitleSimilarity": 0.7024793499459631
}

Source documents

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

Possible Innocent Explanations

Legitimate multi-lot procurement
Different sites under same program