IESET.
Hypotheses·housing·singapore_lky_hdb_homeownership_public_housing_1960_1990

Singapore's HDB public-housing and CPF housing-finance system increased mass homeownership and reduced overcrowding between 1960 and 1990 without relying on a general tax-financed public-housing entitlement model.

INCONCLUSIVEengine/runs/singapore_lky_hdb_homeownership_public_housing_1960_1990

INCONCLUSIVE_DATA_PENDING - Singapore HDB/homeownership vintages are not on disk

confidence cueResult card produced; verdict unclassified.

policy briefCoverage too thin

In ordinary language

Does the housing rule being tested make homes easier to build, rent, or afford, or does it quietly reduce supply and push costs elsewhere?

plain answer

This test cannot make a firm call yet. Singapore HDB/homeownership vintages are not on disk

why it matters

Housing policy affects rents, mobility, household budgets, and construction. The test looks for measurable effects rather than relying on slogans.

how the test works

It compares 1 country or place units from 1960 to 1990, using a descriptive design.

what was measured
What we checked
  • Homeownership rate
  • Share population in hdb flats
  • Persons per room or overcrowding
what this does not prove

A single test is not the whole truth. It narrows the claim under a specific sample, time period, and method. Strong policy conclusions need the pattern to survive nearby tests, alternative data, and serious objections.

verification

No evidence packet has been generated yet.

Results

engine/runs/singapore_lky_hdb_homeownership_public_housing_1960_1990
1007550250196019751990SGP
illustrative sketch · run pending
No coefficients yet. When the model fires, this chart will show homeownership_rate across 1 sampled countries over 1960–1990.
The shapes above are stylised — none of the lines are real data.
Placeholder for singapore_lky_hdb_homeownership_public_housing_1960_1990. Published chart will be generated from engine/runs/singapore_lky_hdb_homeownership_public_housing_1960_1990/chart_data.json.

Pre-registration

pre-registered
first-spec commit 4c8ce8e · 2026-07-18T22:11:21Z

Singapore's HDB public-housing and CPF housing-finance system increased mass homeownership and reduced overcrowding between 1960 and 1990 without relying on a general tax-financed public-housing entitlement model.

Falsification criterion — what would disprove this

set before the run · honoured after

This hypothesis is considered falsified if:

SUPPORTED if homeownership rises by at least 45 percentage points, HDB resident share exceeds 70 percent by 1990, and overcrowding falls materially. REFUTED if homeownership rises by less than 20 percentage points or HDB resident share remains below 40 percent.

formal test & threshold
test:      singapore_hdb_homeownership_endpoint_check
threshold: homeownership_change >= 45pp AND hdb_resident_share_1990 >= 70; refute if homeownership_change < 20pp OR hdb_share_1990 < 40

Method

Template
descriptive
Clustering
none
Sample
1 countries · 1960 – 1990
Evidence type
descriptive

Data-gated HDB/homeownership study; runner intentionally refuses to grade until Singapore HDB vintages are present.

Data

VariableSourceTransform
homeownership_rate
outcome
singapore_hdb:homeownership_ratetier 5
endpoint_change
share_population_in_hdb_flats
outcome
singapore_hdb:hdb_resident_sharetier 5
endpoint_change
persons_per_room_or_overcrowding
outcome
singapore_hdb:overcrowdingtier 5
endpoint_change

● ready  · ● pending  · ● reconstruct-needed

Detailed result card

Result card - singapore_lky_hdb_homeownership_public_housing_1960_1990

Verdict: INCONCLUSIVE_DATA_PENDING - Singapore HDB/homeownership vintages are not on disk

Missing data

  • singapore_hdb:homeownership_rate
  • singapore_hdb:hdb_resident_share
  • singapore_hdb:overcrowding

This is registered as a high-priority data-repair study rather than a scored result.

Strongest opposing argument

Every hypothesis ships with its charitable opposing argument. The framework earns credibility by handling objections at their strongest, not weakest.

Notes

Major Singapore/LKY pillar. Requires HDB annual-report or SingStat housing vintage before graduation.

Authored framework. Read the transparency note.