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Lagos · Evidence index

Construction — Evidence Index

The reference sources, calibration citations and disclosed evidence gaps behind Construction on Lagos, in one place — not the whole city's evidence catalogue, just this domain's.

Published evidence · Read the scope with the result
Construction Evidence

What backs every Construction number on Lagos.

Each card below is a real, currently-published evidence item for Construction — not a description of what evidence would look like.

Schedule Slippage

certification check — Completed projects finishing after PlannedEndDate

PASS — real fix, 2026-07-26: Lagos previously had a 0%-late generation model artifact; now the majority genuinely finish late, Lagos.

Cost Overrun

certification check — vs. Flyvbjerg et al. global infrastructure cost-overrun literature

PASS — cost ratio 1.10, 68.6% over budget; Lagos 1.10, 68.63% over budget, after the underlying cost-behavior defect was corrected and revalidated.

Temporal Integrity

certification check — inspection date vs. linked Project/Permit dates

PASS, Lagos — a real Lagos-only floor-logic bug (20,067+ affected rows) found and fixed 2026-07-26.

Reference Catalogue (city-wide)

Census, survey and administrative sources behind every domain, including Construction.

Download source index →

Representative Sample

A curated, non-identifying CSV sample of Construction records from Lagos.

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Sample Data — Premium

A larger, richer extract of Construction records, released on request for evaluation.

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This page is the Construction-scoped view. The full, city-wide Evidence Library (all domains, all document categories) is at Evidence Library →.

Construction Longitudinal Lineage

Two synthetic records, traced through time.

These published synthetic record examples show the dated history available for this domain. Longer histories are sampled across their full span; each record states how many events are displayed.

Lagos Construction Project LOS-00006481940–1987 · 4 documented events

Representative synthetic record from the published Lagos City Twin.

  1. Construction started
  2. Completed, status Completed
  3. Building permit applied (demolition)
  4. Permit approved
Lagos Construction Project LOS-00009781940–1971 · 4 documented events

Representative synthetic record from the published Lagos City Twin.

  1. Construction started
  2. Completed, status Completed
  3. Building permit applied (demolition)
  4. Permit approved
Public Evidence Pack ↓Representative CSV ↓Sample Data — Premium →Use & governance →