1001 Smart Cities

Permanent project revision

Circular Building Material Passports

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

Current revision. This is the snapshot used by the live entity page.

unreviewed

Quality run to P4: claim array, source dates, present-tense audit. Circl was dismantled from May 2024 with components stored for reuse and no new site named (Zuidas, Oct 2024). The 2019 Madaster item gave eight MRA municipalities certificates for being 'well on their way' to a passport for one building each — not passports, and not a city ledger. Scope is a set of pilots, not citywide.

sha256:afad244d30f271ad7e48cb349bf84e1b099625bf081f40612dde8aa01801d4e8
All revisions → Current entity page →

Change set

  • replace /snapshot/projectFingerprint — Updated projectFingerprint to the current sourced project record.
  • replace /snapshot/asOf — Updated asOf to the current sourced project record.
  • replace /snapshot/claims — Updated claims to the current sourced project record.
  • replace /snapshot/sources — Updated sources to the current sourced project record.
13
of 13 claims mapped
5
source dossiers
5
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Claims, one by one

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)

Source dossiers and revision state

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.