Track · Trace · Transact

Every municipality is a material bank.

Dutch municipalities hold billions in buildings, roads and civil works — value recorded on public balance sheets, and material value hidden inside it. Select a municipality and see what a circular approach could unlock.

Explore the map.How we calculate
Data: CBS IV3 open data · Jaarrekening 2024 · 342 municipalities
Onboarded — 2024 figures
0
municipalities in the Netherlands
€0 k
total assets, onboarded set
€0 k
built structures — buildings, roads, bridges
up to€0 k
indicative circular value potential
Methodology

From balance sheet to material value.

Three steps, all from public data: read the official numbers, keep only what physically holds material, and estimate what a circular approach could recover from it.

  1. 01
    Source

    Official open data

    Every quarter, all Dutch municipalities report their finances to CBS under the IV3 standard. We read the audited year-end balance sheet (jaarrekening, ultimo positions) directly from the CBS OData API — no scraping, no estimates on the input side.

  2. 02
    Extract

    Isolate the built structures

    We keep only the posts that physically hold material — buildings & facilities and civil works (roads, sewers, bridges). Land, residential property, vehicles and installations are shown for context but never counted. Book values are depreciated, so they systematically understate the real material stock.

  3. 03
    Value

    Indicative recovery range

    We apply a material-recovery range — 1.5% to 8% of book value— to give a low and high estimate of circular value potential. These factors are illustrative; MAECONOMY’s team replaces them with audited, material-level calculations — track, trace & transact.

What we count

Only the built material.

Two asset classes on every municipal balance sheet actually lock up recoverable material. Everything else on the sheet is excluded from the numbers.

Buildings & facilities

Town halls, schools, sports halls and cultural venues — the municipality’s occupied building stock.

1.5%–8%recovery range

Civil works — roads, sewers, bridges

Roads, sewers, bridges and tunnels — the public infrastructure network beneath and across the municipality.

1.5%–8%recovery range
For municipalities & portfolio owners

Want the real number, not the indication?

Onboard your portfolio and turn buildings into certified, tradable material reserves — visible, auditable and part of a global circular economy.

Get in touch.