How we built “The “30% rule” for housing is met mainly by the households that need it least” — the metric, the sources, the limitations, and how to reproduce every number.
The metric
Housing cost burden = BLS CE Housing (shelter, utilities, household operations, furnishings; consumer-unit mean) as a share of total average annual expenditures (robust headline) and as a share of income before taxes (with the bottom-quintile under-reporting caveat), per LB01 income quintile and LB04 age bracket.
Breakdown dimension: BLS CE quintile of income before taxes (LB01) and, in parallel, age of reference person (LB04). Data vintage: BLS Consumer Expenditure Survey LB01 2014–2024 (latest annual 2024); BLS Consumer Expenditure Survey, LABSTAT CXU series, classification LB04 (age of reference person), 2024 annual means.
Sources
- BLS Consumer Expenditure Survey (classification LB01, 2014–2024; series IDs: CXUHOUSINGLB0101M, CXUUTILSLB0101M, CXUTOTALEXPLB0101M, CXUINCBEFTXLB0101M)
- BLS Consumer Expenditure Survey, LABSTAT CXU series, classification LB04 (age of reference person), 2024 annual means
Canopy Press analysis of BLS Consumer Expenditure Survey data (2024; income quintiles and age of reference person; all-consumer-unit means).
How it’s computed
All figures are deterministic arithmetic on the official series above — no estimates, no modeling. Raw API responses are snapshotted at the stated vintage; every published figure must reproduce from those snapshots before publication (an automated audit gate recomputes the table, the chart values, and the CSV byte-for-byte, and blocks publication on any mismatch).
Limitations
- CE under-reports income at the bottom of the distribution: the lowest quintile's average spending ($35,046) exceeds its average reported income ($16,658) STRONGLY, and the second quintile's does too, mildly ($50,054 vs $42,925). By that diagnostic only the top THREE quintiles' income figures are reliable. The lowest quintile's share of reported income (87.4%) reads only as 'housing is large relative to current reported income'; the second quintile's (44.7%) is directional only (true income above reported would mean a lower true share). The headline is anchored on housing as a share of TOTAL SPENDING, immune to this artifact.
- All figures are all-consumer-unit MEANS (renters and owners, all household sizes), not medians.
- CE measures housing EXPENDITURE as defined by its Housing category (shelter, utilities, household operations, furnishings) — spending, not an affordability cost index; utilities are included in Housing (the Utilities sub-line is shown separately, not added).
- Income shares use before-tax income — the conservative choice; after-tax income would raise every share.
- Under-25 is a thin cell (carcost precedent); it is shown but never the headline.
Reproduce it
Pull the series listed above from the official APIs at the stated vintage and recompute. Verification values (recomputed before publish):
| Check | Value |
|---|---|
| share_spend_lowest_2024 | 41.6 |
| share_spend_highest_2024 | 29.3 |
| share_spend_gap_pp | 12.3 |
| share_inc_lowest_2024 | 87.4 |
| share_inc_second_2024 | 44.7 |
| share_inc_third_2024 | 32.4 |
| share_inc_fourth_2024 | 24.2 |
| share_inc_highest_2024 | 16.6 |
| lowest_income_2024 | 16658.0 |
| lowest_spending_2024 | 35046.0 |
| published_anchor_totalexp_all_2024 | 78535.0 |
| decade_min_low_spend | 40.0 |
Accountability
Canopy Press research is produced by a methodology-driven, human-overseen pipeline. John Fox, Founder & Head of Research, is responsible for the data methodology and editorial standards behind this asset. Corrections: [email protected]. See our Editorial Standards and the research changelog.