1001 Smart Cities
🇳🇱 Amsterdam

Circular Building Material Passports

🤖 AI-generated summary · ◆ 13 sourced claims · 🔎 Last verified

This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.

13 sourced claims on this page, none individually verified yet — turn on “Sources in the text” to see each one.

How this atlas is made · What “last verified” means · What “source-checked” means · The full record behind this page

✎ Corrected 5 Oct 2026 1 source added. · 4 revisions in all What changed →

A pavilion at Zuidas logged every material it was built from under the name 'LLMNT', so a demolition reads as a supply list. Eight municipalities in the region got building passports in 2019.

Outcome🔄 Ongoing
Evidence🏛️ Official
what does this mean?The strongest source is the operator's or the city's own reporting — an official report, dataset or press release. It grades who did the looking — not how well the project went. All four grades →
Run byMadaster
Scale🧪 Pilot

Part of 1001 Smart Cities — 1,216 documented projects · 🏙️ 8 more in Amsterdam · ♻️ Circular economy guide · 🌱 Environment projects

Amsterdam's Circl pavilion was logged as a digital material passport, recording every material for future reuse under the name ‘LLMNT’; the pavilion itself was dismantled from May 2024, its materials stored for reuse. In 2019 eight municipalities of the Amsterdam metropolitan region received certificates from the passport platform Madaster for being well on their way to a material passport for one building each, and a contractor lists circular-neighbourhood pilots in Buiksloterham, Strandeiland and Overhoeks, where it works with materials passports and the reuse of demolition waste.

Live 📅 since 2017

📊 Impact

When Circl was taken apart from May 2024, its seven-year-old roof solar panels went to a new-build project in Gelderland and the remaining components went into storage while a new site was sought; the dismantler's stated aim was to reuse around 70% of the building, a target rather than a measured result (Zuidas, October 2024). No source ties this reuse to the LLMNT passport.

🎓 Lesson

A passport records what the drawings say; the dismantling of Circl showed what was really there. The demolition contractor tagged every component with its own coded sticker for storage and found window frames that had been sawn into during construction — the record that mattered at the end was made at the end.

🌱 EnvironmentCircular economy

Sources

↗ Madaster (technology partner)Published 6 November 2019Official record of the 2019 material-passport certificates awarded to 8 Amsterdam-area municipalities.
↗ Dutch Architects (trade press)Published 29 January 2020Confirms the Circl pavilion's material passport is named 'LLMNT'.
↗ I amsterdam (city business platform)Published 11 July 2025 · updated 6 November 2025Confirms ongoing circular-neighbourhood pilots in Strandeiland, Overhoeks and Buiksloterham; updated Nov 2025.
↗ Zuidas — Dismantling of Circl pavilion starts (30 Apr 2024)Dismantling of Circl began 13 May 2024 (Icon Real Estate, Victory Group); materials to be stored and prepared for future reuse. The page does not mention the material passport.
↗ Zuidas — Demolition of Circl pavilion in full swing (29 Oct 2024)lcp circulair dismantling Circl since May 2024; aim to reuse around 70% of the building; solar panels reused in a new-build project in Gelderland; every component given a coded sticker and stored while a new site is sought; some window frames sawn into during 2017 construction.

📅 How old is the evidence?

Two clocks, kept apart: when this entry’s sources were published, and what has happened to its record in the atlas. Documented span: since 2017. 5 of 5 sources carry a publication date, from 6 November 2019 to 11 July 2025.

When the sources were published

  1. Madaster · vendorMadaster (technology partner)
  2. Dutch Architects · pressDutch Architects (trade press)
  3. Zuidas — Dismantling of Circl pavilion starts (30 Apr 2024)
  4. Zuidas — Demolition of Circl pavilion in full swing (29 Oct 2024)
  5. amsterdam&partners (I amsterdam) · ngoI amsterdam (city business platform) · updated 6 November 2025

Every source, with links ↑

What happened to this record

  1. 1 claim added
  2. Entered the record
  3. Publication date recorded for 3 sources
  4. 1 source added
  5. 1 source added
  6. Sources last read

Every revision, permanent →

Show your work What this page rests on and what it can’t tell you · all 13 claims with their sources · the forensic record

Evidence file · public beta 13 addressable claims, 5 source dossiers, one permanent baseline. The file is unreviewed — an AI-assisted structural migration, not a human or expert endorsement. Every revision keeps a permanent copy under revision history.

Inspect the claims, one by one — verbatim text, sources and caveats for all 13

The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.

Claim 1 clm-55f508e9dc2f3bab descriptive
Amsterdam's Circl pavilion
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The project page is titled 'Circl, Amsterdam' and describes it as a pavilion: 'The ‘Circl’ pavilion is unique in the Netherlands: the first constructed practical example of sustainable and circular designs.' Client is named as ABN AMRO.
Caveat
The page confirms the pavilion and the city, but never gives its address or district; it does not place Circl at Zuidas.

Sources carrying this claim

  1. Dutch Architects (trade press)
Claim 2 clm-96f4f4e11db5da4c descriptive
digital material passport
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Dutch Architects records that Circl's materials 'have been recorded in a ‘digital twin’; the building passport is named LLMNT.' I amsterdam defines the instrument: 'Digital material passports are databases that record detailed information about materials, enabling future reuse, reducing waste, and supporting a circular construction economy.'
Caveat
Neither source calls the Circl passport a Madaster passport, and neither says it was Madaster's first — I amsterdam lists Madaster's Amsterdam-area projects as Schiphol Trade Park and Juf Nienke, not Circl.

Sources carrying this claim

  1. Dutch Architects (trade press)
  2. I amsterdam (city business platform)
Claim 3 clm-348433b6a7d9cee1 descriptive
recording every material for future reuse
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
'All materials, components and parts that make up the building have been recorded in a ‘digital twin’', and reuse is stated as the purpose from the outset: 'The reuse of the applied materials was factored into the process right from the start.'
Caveat
The entry no longer claims the location (Zuidas), the superlative ('Madaster's first') or the year 2017: none of the three listed sources carries them.

Sources carrying this claim

  1. Dutch Architects (trade press)
Claim 4 clm-a8261dd7f6a990d2 descriptive
under the name ‘LLMNT’
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Verbatim: 'the building passport is named LLMNT.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dutch Architects (trade press)
Claim 5 clm-807e0bfe226294c7 quantitative
the pavilion itself was dismantled from May 2024, its materials stored for reuse
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Zuidas announced dismantling of the Circl pavilion from 13 May 2024, with materials stored for reuse.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Zuidas — Dismantling of Circl pavilion starts (30 Apr 2024)
Claim 6 clm-d7803196c28eca12 quantitative
In 2019 eight municipalities of the Amsterdam metropolitan region received certificates from the passport platform Madaster for being well on their way to a material passport for one building each
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
'On 31 October, eight municipalities received a certificate for their advanced implementation of material passports … each presented with a Madaster material passport for one of their buildings … because they were well on their way to obtaining a material passport.'
Caveat
Platform operator's own account; the eight are Amsterdam, Almere, Diemen, Edam-Volendam, Haarlem, Lelystad, Uithoorn and Waterland.

Sources carrying this claim

  1. Madaster (technology partner)
Claim 7 clm-c8f19a3dc155f80a descriptive
a contractor lists circular-neighbourhood pilots in Buiksloterham, Strandeiland and Overhoeks, where it works with materials passports and the reuse of demolition waste
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Under Dura Vermeer: embedding circular principles 'from modular building designs to the reuse of demolition waste', experimenting with 'materials passports to track resources'; projects: 'Circular neighbourhood pilots in the Amsterdam Area, such as Strandeiland IJburg and Overhoeks, Buiksloterham'.
Caveat
The page does not say which practices are used on which pilot.

Sources carrying this claim

  1. I amsterdam (city business platform)
Claim 8 clm-9d1cc3622da68c7d descriptive
its seven-year-old roof solar panels went to a new-build project in Gelderland
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
'the solar panels are now being reused in a newbuild project in Gelderland'; they are 'around seven years old'.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Zuidas — Demolition of Circl pavilion in full swing (29 Oct 2024)
Claim 9 clm-c3cc3e9778b3d788 descriptive
the remaining components went into storage while a new site was sought
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
'Currently, a suitable new site for the Circl pavilion is still being sought. Until then, all of the dismantled components will go into storage with lcp circulair.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Zuidas — Demolition of Circl pavilion in full swing (29 Oct 2024)
Claim 10 clm-be8e5fb643cbf4a7 quantitative
the dismantler's stated aim was to reuse around 70% of the building, a target rather than a measured result
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
lcp circulair's project manager: 'In the case of the Circl pavilion, the aim is to reuse around 70% of the building.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Zuidas — Demolition of Circl pavilion in full swing (29 Oct 2024)
Claim 11 clm-cc0281be89785608 descriptive
No source ties this reuse to the LLMNT passport.
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Neither Zuidas article on the dismantling mentions the material passport; tracking was done with the contractor's own coded stickers.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Zuidas — Demolition of Circl pavilion in full swing (29 Oct 2024)
  2. Zuidas — Dismantling of Circl pavilion starts (30 Apr 2024)
Claim 12 clm-2a77f76dcc2d4653 descriptive
The demolition contractor tagged every component with its own coded sticker for storage
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
'Every component – from window frame to floorboard or screw – is given a coded sticker during dismantling … creates an excellent track & trace system.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Zuidas — Demolition of Circl pavilion in full swing (29 Oct 2024)
Claim 13 clm-0657fe021b760a8c descriptive
found window frames that had been sawn into during construction
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
'During construction in 2017, some window frames were already sawn into and require extra care to enable them to be used again'; and 'What's on the construction drawings often differs from what you actually see in practice after a few years of use.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Zuidas — Demolition of Circl pavilion in full swing (29 Oct 2024)
Forensic record — source dossiers, gaps, hashes and the exact revision this page renders

This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.

unreviewed Revision 2026-10-05-p4-quality-run effective 2026-10-05 · created 2026-10-05

Awaiting operator and domain-expert review; publication of this revision implies neither.

sha256:afad244d30f271ad7e48cb349bf84e1b099625bf081f40612dde8aa01801d4e8
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
13
of 13 claims mapped
5
source dossiers
5
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
Madaster
Actor types
private
Funding model
Not recorded
Funding description
Not recorded
Cost
Not recorded
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

5 source dossiers

Madaster (technology partner) madaster.com · 1 linked claim

Open original source ↗

Stable source ID
src-72fd5179c95dc0ce
Publisher
Name not classified · madaster.com
Type / language
web-page · language not classified
Published
2019-11-06
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Official record of the 2019 material-passport certificates awarded to 8 Amsterdam-area municipalities.

Descriptive only — not page/paragraph exact
Claims linked
Dutch Architects (trade press) dutcharchitects.org · 4 linked claims

Open original source ↗

Stable source ID
src-12e70da2cb624ac5
Publisher
Name not classified · dutcharchitects.org
Type / language
web-page · language not classified
Published
2020-01-29
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Confirms the Circl pavilion's material passport is named 'LLMNT'.

Descriptive only — not page/paragraph exact
Claims linked
I amsterdam (city business platform) iamsterdam.com · 2 linked claims

Open original source ↗

Stable source ID
src-93a23f020eb629a0
Publisher
Name not classified · iamsterdam.com
Type / language
web-page · language not classified
Published
2025-07-11
Updated
2025-11-06
Source last checked
No source-level check date
Record last verified
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Confirms ongoing circular-neighbourhood pilots in Strandeiland, Overhoeks and Buiksloterham; updated Nov 2025.

Descriptive only — not page/paragraph exact
Claims linked
Zuidas — Dismantling of Circl pavilion starts (30 Apr 2024) zuidas.nl · 2 linked claims

Open original source ↗

Stable source ID
src-89dd4e10737bc14a
Publisher
Name not classified · zuidas.nl
Type / language
web-page · language not classified
Published
2024-04-30
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Dismantling of Circl began 13 May 2024 (Icon Real Estate, Victory Group); materials to be stored and prepared for future reuse. The page does not mention the material passport.

Descriptive only — not page/paragraph exact
Claims linked
Zuidas — Demolition of Circl pavilion in full swing (29 Oct 2024) zuidas.nl · 6 linked claims

Open original source ↗

Stable source ID
src-21e096621c9d5150
Publisher
Name not classified · zuidas.nl
Type / language
web-page · language not classified
Published
2024-10-29
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-05
Dossier created
2026-10-05
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

lcp circulair dismantling Circl since May 2024; aim to reuse around 70% of the building; solar panels reused in a new-build project in Gelderland; every component given a coded sticker and stored while a new site is sought; some window frames sawn into during 2017 construction.

Descriptive only — not page/paragraph exact
Claims linked
Known limits of this file
  • Publisher names and source languages have not yet been classified; domains are recorded without guessing.
  • Existing source notes are descriptive locators, not page- or paragraph-exact citations.
  • A missing archive, publication date or content hash is shown as null rather than inferred.
  • The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim.

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📎 Cite this project

1001 Smart Cities (2026). “Circular Building Material Passports” — Amsterdam, Netherlands. The Smart City Atlas. https://1001smartcities.org/projects/amsterdam-circular-materials/ (last verified 2026-10-05). Data: CC BY 4.0.

The underlying data is free to reuse with attribution — see the open data page.

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