Data Sources

Infrastructure Projects: National Infrastructure Pipeline – produced by Te Waihanga (CC BY 4.0). Data current as at Q1 2026. tewaihanga.govt.nz

Electoral Boundaries: Stats NZ Geographic Data Service — General Electoral District 2025, Māori Electoral District 2025. Crown Copyright.

2023 Election Results: Electoral Commission NZ. elections.nz

Council Boundaries: Stats NZ — Territorial Authority 2020 Clipped Generalised. Crown Copyright. Served from local bundle for reliability.

Building Consents: Stats NZ — new residential dwelling consents by Territorial Authority, year ended December 2024 (approximate). stats.govt.nz

Methodology

Project markers are sized proportional to estimated cost. Location is the project's declared region centroid unless a precise location is known.

Election risk tags are editorial assessments based on publicly available party policy, funding status, and project phase — they are not predictions. Projects are tagged Extreme, High, Medium, Low, or Safe based on vulnerability to government change.

Development Activity choropleth shows 2024 residential building consents by Territorial Authority from Stats NZ. Color intensity indicates volume of new dwelling consents — a proxy for growth pressure and infrastructure demand. Scores 1–5 (Very Low to Very High) are based on annual consent volumes.

Funding Split (in project popups) is a heuristic estimate based on project owner organisations. National government percentage reflects Crown agencies (Waka Kotahi, Health NZ, etc.); Local government reflects councils and their arms; Private reflects SOEs and PPPs. These are approximations — not audited figures.

Council amalgamation: NZ announced regional council abolition and potential TA mergers in May 2026. Current boundaries shown reflect pre-restructure councils.

Attribution

National Infrastructure Pipeline data produced by Te Waihanga under CC BY 4.0.

Electoral and boundary data © Crown Copyright — Stats NZ and Electoral Commission.