1001 Smart Cities

Permanent project revision

Tengah Forest Town

Revision 2026-11-04-evidence-baseline · effective 2026-11-03

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

unreviewed

Created the first structured Evidence Passport with 20 claims and 10 source dossiers.

sha256:30c7e3bfe6424f3f3e404606f4e156186d6665f7865071e1348a886ef0f0ed7d
All revisions → Current entity page →

Change set

  • add /evidencePassport — Added claim-level evidence mapping and source dossiers.
  • add /revisionHistory — Established a permanent, hash-addressed baseline revision.
20
of 20 claims mapped
10
source dossiers
9
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-beb348e34dfa4d67 descriptive
Tengah is Singapore's first HDB town master-planned from scratch as a smart, sustainable "Forest Town"
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
HDB's chief sustainability officer calls Tengah Singapore's first smart and sustainable HDB town; the 2016 masterplan report calls it the first forest town; CNN quotes HDB's planning director describing the site as a clean slate.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Keppel — HDB awards new Centralised Cooling System contract to Keppel for nine BTO projects in Tengah (16 Apr 2026)
  2. PropertyGuru — 'Tengah new town to be built right into nature' (9 Sep 2016)
  3. CNN Style — 'Singapore is building a 42,000-home eco smart city' (Tengah, 31 Jan 2021)
Claim 2 clm-d9d8b379f66b80d2 quantitative
plans unveiled in September 2016
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The report states that the minister unveiled the masterplan at the HDB Awards ceremony on 8 September 2016.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. PropertyGuru — 'Tengah new town to be built right into nature' (9 Sep 2016)
Claim 3 clm-15ad09b6f2058c87 quantitative
Early residents, who began collecting keys in 2023
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
HDB's milestone list dates the first key collections at Plantation Acres and Plantation Grange to August 2023.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. HDB — Building up Tengah Town: progress milestones (annex, 6 Dec 2025)
Claim 4 clm-de426ca4733d1271 descriptive
live with SP Group's centralised (district) cooling
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
SP Group's resident site presents the Centralised Cooling System as a service for Tengah homes, with chilled water from rooftop chiller plants replacing individual condensers.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. SP Group / myTengah — Centralised Cooling System and smart-energy features (operator, accessed 2026)
Claim 5 clm-7639ebac53fc41ed descriptive
the first large-scale residential deployment in Singapore's public housing
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
EdgeProp describes Tengah's cooling system as the first to be offered in a public housing estate; CNN reports Tengah is the first new town with centralised cooling.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. EdgeProp Singapore — 'CCS woes spur Tengah residents to seek legal recourse against SP Group' (25 Jul 2024)
  2. CNN Style — 'Singapore is building a 42,000-home eco smart city' (Tengah, 31 Jan 2021)
Claim 6 clm-772d465fcf6e8a9d descriptive
an automated pneumatic waste-conveyance system
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
CNN quotes HDB on refuse being sucked through a pneumatic system to a chamber serving several blocks; HDB later listed Tengah among the roughly 40 precincts where the system is installed.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. CNN Style — 'Singapore is building a 42,000-home eco smart city' (Tengah, 31 Jan 2021)
  2. Stomp — 'Chokes hamper automated waste systems in some HDB estates' (3 Feb 2025)
Claim 7 clm-67eada924cc614c1 descriptive
EV charging and a smart-energy app
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
SP Group's resident site lists EV charging points and the SP App with MyTengah features for bills and smart appliance monitoring.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. SP Group / myTengah — Centralised Cooling System and smart-energy features (operator, accessed 2026)
Claim 8 clm-e24623ad90f38222 quantitative
the first installations leaked in 2023
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The Straits Times reports residents cancelling contracts after leaks; EdgeProp dates the first photos of pooling water in residents' chat group to September 2023, after the first flats were completed.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. The Straits Times — 'SP Group offers extra 6 months' warranty for Tengah's cooling system after leak complaints' (28 Mar 2024)
  2. EdgeProp Singapore — 'CCS woes spur Tengah residents to seek legal recourse against SP Group' (25 Jul 2024)
Claim 9 clm-55c168cb8f04707e descriptive
SP Group says the workmanship problems have since been fixed
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
In a sponsored article, SP Group staff say pandemic delays caused workmanship issues and that the situation has since improved considerably, citing SP's own engagement survey.
Caveat
This account comes from content paid for by SP Group, not from independent reporting.

Sources carrying this claim

  1. Mothership.sg — 'People who fixed Tengah's cooling system…' (sponsored by SP Group, 15 Dec 2025)
Claim 10 clm-7682848fc452c6c6 descriptive
HDB has contracted later projects to a second cooling provider, Keppel
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Keppel's announcement states HDB awarded it a 20-year contract for nine upcoming Tengah projects, its second Tengah contract after one in September 2024, covering about 14,000 households across 12 projects.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Keppel — HDB awards new Centralised Cooling System contract to Keppel for nine BTO projects in Tengah (16 Apr 2026)
Claim 11 clm-33476134905f7f52 quantitative
By December 2025 more than 14,000 of the roughly 30,000 flats planned had been completed
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
EdgeProp reports HDB's December 2025 update: more than 14,000 flats in 14 projects completed, nearly half of the 30,000 planned.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. EdgeProp Singapore — 'Second neighbourhood centre in Tengah to open in 1Q2026' (8 Dec 2025)
Claim 12 clm-335b0a22b87d7f6c descriptive
The signature car-lite town centre, with vehicle roads running underneath
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The 2016 masterplan report describes a car-lite town centre with vehicles plying underneath; CNN quotes HDB on roads, parking and utilities pushed beneath the town centre.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. PropertyGuru — 'Tengah new town to be built right into nature' (9 Sep 2016)
  2. CNN Style — 'Singapore is building a 42,000-home eco smart city' (Tengah, 31 Jan 2021)
Claim 13 clm-f3147626ad625461 quantitative
in December 2025 HDB listed the town centre among the amenities due in the coming years
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
EdgeProp quotes HDB's December 2025 update naming Tengah Town Centre among amenities residents can look forward to in the coming years.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. EdgeProp Singapore — 'Second neighbourhood centre in Tengah to open in 1Q2026' (8 Dec 2025)
Claim 14 clm-0aca9e33e66617dd quantitative
after leaks in 2023, SP Group's cooling subscriptions fell from 10,600, or eight in ten flat owners, to more than 9,000, seven in ten, by February 2024
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The Straits Times compares SP's archived November 2023 figure of 10,600 subscribers, eight in ten flat owners, with SP's own count of more than 9,000, seven in ten, as at 12 February 2024, after residents cancelled following leaks.
Caveat
Both figures are SP Group's own counts; the share also depends on how many flats had been handed over at each date.

Sources carrying this claim

  1. The Straits Times — 'SP Group offers extra 6 months' warranty for Tengah's cooling system after leak complaints' (28 Mar 2024)
Claim 16 clm-295377b2f83912bc descriptive
SP responded with an extra six months' warranty and a reduced usage rate
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The Straits Times reports SP's offer of an additional six months' warranty and a lower usage rate for subscribers.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. The Straits Times — 'SP Group offers extra 6 months' warranty for Tengah's cooling system after leak complaints' (28 Mar 2024)
Claim 17 clm-fdb800bdb7f60319 descriptive
Tengah's district cooling was sold before key collection
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
EdgeProp quotes a resident who signed up in 2020, years before the first keys; Keppel notes that early subscribers get air-conditioning ready on key collection.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. EdgeProp Singapore — 'CCS woes spur Tengah residents to seek legal recourse against SP Group' (25 Jul 2024)
  2. Keppel — HDB awards new Centralised Cooling System contract to Keppel for nine BTO projects in Tengah (16 Apr 2026)
Claim 18 clm-bb2337c0289f95a9 descriptive
the operator had to answer with longer warranties and a lower tariff
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
SP's response to the leak complaints was an extra six months' warranty and a reduced usage rate.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. The Straits Times — 'SP Group offers extra 6 months' warranty for Tengah's cooling system after leak complaints' (28 Mar 2024)
Claim 19 clm-a946cc2a3307f893 quantitative
up to 30% less than conventional air-conditioning
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Keppel's announcement states the system uses up to 30% less energy than conventional air-conditioning.
Caveat
An 'up to' figure from the system's providers, not a measurement in occupied homes.

Sources carrying this claim

  1. Keppel — HDB awards new Centralised Cooling System contract to Keppel for nine BTO projects in Tengah (16 Apr 2026)
Claim 20 clm-5f5a5d5fa23f8127 descriptive
a design figure that no published measurement in occupied flats has yet confirmed
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
EdgeProp reports that SP's site still quoted cost-saving estimates from November 2023 in July 2024; none of the sources reports measured savings in occupied flats.
Caveat
This states an absence: no source reviewed for this entry reports measured savings; one could exist.

Sources carrying this claim

  1. EdgeProp Singapore — 'CCS woes spur Tengah residents to seek legal recourse against SP Group' (25 Jul 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 2026-11-04-evidence-baseline effective 2026-11-03 · created 2026-11-04

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

sha256:30c7e3bfe6424f3f3e404606f4e156186d6665f7865071e1348a886ef0f0ed7d
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
20
of 20 claims mapped
10
source dossiers
9
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
Housing & Development Board (HDB) / SP Group / Keppel
Actor types
national-government, utility
Funding model
public
Funding description
Not recorded
Cost
Not recorded
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

10 source dossiers

SP Group / myTengah — Centralised Cooling System and smart-energy features (operator, accessed 2026) mytengah.sg · 2 linked claims

Open original source ↗

Stable source ID
src-afb0ac93ffec144f
Publisher
Name not classified · mytengah.sg
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-11-03
Dossier created
2026-11-04
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Operator page: CCS, smart-energy app, EV charging, solar as live resident services

Descriptive only — not page/paragraph exact
Claims linked
Mothership.sg — 'People who fixed Tengah's cooling system…' (sponsored by SP Group, 15 Dec 2025) mothership.sg · 1 linked claim

Open original source ↗

Stable source ID
src-49de1793a7e37bab
Publisher
Name not classified · mothership.sg
Type / language
web-page · language not classified
Published
2025-12-15
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-11-03
Dossier created
2026-11-04
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Independent: residential CCS operating, early complaints resolved by 2024-25

Descriptive only — not page/paragraph exact
Claims linked
CNN Style — 'Singapore is building a 42,000-home eco smart city' (Tengah, 31 Jan 2021) cnn.com · 4 linked claims

Open original source ↗

Stable source ID
src-21fab9a2da1e473c
Publisher
Name not classified · cnn.com
Type / language
web-page · language not classified
Published
2021-01-31
Updated
2021-02-01
Source last checked
No source-level check date
Record last verified
2026-11-03
Dossier created
2026-11-04
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Overview: first purpose-built smart/sustainable town, centralised cooling, pneumatic waste, car-free town centre

Descriptive only — not page/paragraph exact
Claims linked
PropertyGuru — 'Tengah new town to be built right into nature' (9 Sep 2016) sg.finance.yahoo.com · 3 linked claims

Open original source ↗

Stable source ID
src-2ac637d1170f1e56
Publisher
Name not classified · sg.finance.yahoo.com
Type / language
web-page · language not classified
Published
2016-09-09
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-11-03
Dossier created
2026-11-04
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Report (PropertyGuru, syndicated) on the Tengah masterplan unveiled on 8 September 2016: first forest town, about 42,000 homes of which some 30,000 public flats, a car-lite town centre with vehicles running underneath.

Descriptive only — not page/paragraph exact
Claims linked
HDB — Building up Tengah Town: progress milestones (annex, 6 Dec 2025) hdb.gov.sg · 1 linked claim

Open original source ↗

Stable source ID
src-f6a22461bef55364
Publisher
Name not classified · hdb.gov.sg
Type / language
pdf · language not classified
Published
2025-12-06
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-11-03
Dossier created
2026-11-04
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

HDB's timeline of Tengah milestones, from the first key collections in August 2023 to the Park District hand-overs in 2025.

Descriptive only — not page/paragraph exact
Claims linked
EdgeProp Singapore — 'Second neighbourhood centre in Tengah to open in 1Q2026' (8 Dec 2025) edgeprop.sg · 2 linked claims

Open original source ↗

Stable source ID
src-8c9d820782c4bfdd
Publisher
Name not classified · edgeprop.sg
Type / language
web-page · language not classified
Published
2025-12-08
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-11-03
Dossier created
2026-11-04
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Reports HDB's December 2025 update: more than 14,000 flats in 14 projects completed, nearly half of the 30,000 planned; Tengah Town Centre among amenities still to come.

Descriptive only — not page/paragraph exact
Claims linked
The Straits Times — 'SP Group offers extra 6 months' warranty for Tengah's cooling system after leak complaints' (28 Mar 2024) straitstimes.com · 4 linked claims

Open original source ↗

Stable source ID
src-706136608be4da98
Publisher
Name not classified · straitstimes.com
Type / language
web-page · language not classified
Published
2024-03-28
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-11-03
Dossier created
2026-11-04
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

After leak complaints and cancellations, SP Group offered an extra six months' warranty and a lower usage rate; subscribers had fallen from 10,600 (eight in ten flat owners, November 2023) to more than 9,000 (seven in ten, February 2024).

Descriptive only — not page/paragraph exact
Claims linked
EdgeProp Singapore — 'CCS woes spur Tengah residents to seek legal recourse against SP Group' (25 Jul 2024) sg.finance.yahoo.com · 5 linked claims

Open original source ↗

Stable source ID
src-1ac88314e5c48adb
Publisher
Name not classified · sg.finance.yahoo.com
Type / language
web-page · language not classified
Published
2024-07-25
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-11-03
Dossier created
2026-11-04
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

EdgeProp report (syndicated) on residents seeking legal recourse against SP Group over the cooling system, the first offered in a public housing estate; leaks reported from September 2023.

Descriptive only — not page/paragraph exact
Claims linked
Keppel — HDB awards new Centralised Cooling System contract to Keppel for nine BTO projects in Tengah (16 Apr 2026) keppel.com · 4 linked claims

Open original source ↗

Stable source ID
src-54e9c2b5fab03cd8
Publisher
Name not classified · keppel.com
Type / language
web-page · language not classified
Published
2026-04-16
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-11-03
Dossier created
2026-11-04
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

HDB awarded Keppel a 20-year contract to supply centralised cooling to nine upcoming Tengah projects, its second after September 2024; about 14,000 households across 12 projects.

Descriptive only — not page/paragraph exact
Claims linked
Stomp — 'Chokes hamper automated waste systems in some HDB estates' (3 Feb 2025) stomp.sg · 1 linked claim

Open original source ↗

Stable source ID
src-2b4c97923b0a1476
Publisher
Name not classified · stomp.sg
Type / language
web-page · language not classified
Published
2025-02-03
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-11-03
Dossier created
2026-11-04
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Straits Times report (via Stomp) on chokes in HDB's pneumatic waste systems; HDB lists Tengah among about 40 precincts with the system.

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.