---
title: "21830 – State Supply Adequacy"
url: https://australianproperty.network/apn-codex/series-20000/series-21000/series-21800/21830-state-supply-adequacy/
date: 2026-10-05
modified: 2026-10-10
lang: en
author: "Nicklas Clark"
description: "APN Codex Node 21830 21800 — State & Territory Conditions Certified State Supply Adequacy Readings8 statesPeriodQ1 2026Range−1.04σ to +0.96σVintage2026-Q4 1Node Definition State Supply Adequacy (21830) measures, for each state and..."
word_count: 1892
---

# 21830 – State Supply Adequacy

-

APN Codex Node 21830
21800 — State & Territory Conditions
Certified

### State Supply Adequacy

Readings8 statesPeriodQ1 2026Range−1.04σ to +0.96σVintage2026-Q4

1Node Definition
State Supply Adequacy (21830) measures, for each state and territory, whether the dwelling stock is keeping pace with the population: population growth over the year less dwelling-stock growth over the year, in percentage points. Higher readings mean the population is growing faster than the stock of homes. It publishes eight readings, each against the jurisdiction’s own history, and belongs to State & Territory Conditions (21800). The national reading is Housing Supply Adequacy (21540).

Known limitations
The dwelling count is an ABS modelled stock, benchmarked to the Census and rolled forward with completions less estimated demolitions; estimated resident population is revised at each Census rebasing and recent quarters are preliminary. Both inputs are original series; the change over the year removes their seasonal pattern. The latest quarter is set by population (March 2026), although dwelling counts run to June 2026. The dwelling count begins in September 2011, so the reading begins in September 2012 and is ranked against 55 quarters. State population growth includes movement between states as well as births, deaths and overseas migration, and the smaller jurisdictions move more from quarter to quarter.

2Metric Definition
**Primary metric: Node Z-Score by state (Z21830,s)**

Z-Score Construction, for each state s

Range (Q1 2026)−1.0448σ to +0.9625σ

Ps,tEstimated resident population of state s, end of quarter t
Ds,tNumber of residential dwellings in state s, quarter t
μs, σsThe state’s own baseline mean and sample standard deviation, 2011–2025 (54 quarters)

**Position.** Each reading is ranked against the state’s own 55 quarters since September 2012; every position is empirical.

3Data Sources

| Input | Source | Frequency | Coverage |
| ----- | ------ | --------- | -------- |
| Estimated resident population, by state | ABS National, state and territory population (3101.0), table 3101.04 | Quarterly | September quarter 2011 to March quarter 2026 |
| Number of residential dwellings, by state | ABS Total Value of Dwellings, Table 1 | Quarterly | September quarter 2011 to June quarter 2026 |

Tier-1 sovereign statistical releases. No commercial data provider dependency exists within this node.

4The Eight Readings
Year to March 2026, ordered by reading. Each z is against the state’s own 2011–2025 average; each position ranks the state against its own 55 quarters.

| State | Population growth | Dwelling growth | Gap | Q1 2026 Z | Position (of 55) | Q4 2025 Z | Persons per dwelling |
| ----- | ----------------- | --------------- | --- | --------- | ---------------- | --------- | -------------------- |
| Northern Territory | 1.50% | 0.78% | +0.72 pts | +0.9625σ | 74.1 | +1.2008σ | 2.961 |
| Queensland | 1.59% | 1.42% | +0.18 pts | +0.4557σ | 64.8 | +0.5433σ | 2.487 |
| Western Australia | 2.12% | 1.47% | +0.64 pts | +0.4072σ | 66.7 | +0.4001σ | 2.582 |
| New South Wales | 1.13% | 1.17% | −0.04 pts | +0.3504σ | 59.3 | +0.3306σ | 2.454 |
| Victoria | 1.55% | 1.61% | −0.06 pts | +0.2487σ | 51.9 | +0.3014σ | 2.364 |
| Tasmania | 0.59% | 0.86% | −0.27 pts | −0.1101σ | 68.5 | −0.2405σ | 2.155 |
| Australian Capital Territory | 1.28% | 1.88% | −0.60 pts | −0.1470σ | 37.0 | +0.1562σ | 2.384 |
| South Australia | 0.97% | 1.30% | −0.33 pts | −1.0448σ | 13.0 | −0.7284σ | 2.271 |

Population ahead of dwellings3 of 8NT, WA, QldHighest reading+0.9625σNorthern TerritoryLowest reading−1.0448σSouth AustraliaFastest population growth2.12%Western AustraliaNational (21540)+0.3750σ61.1 of 55Quarters ranked55per state

5Reading History
One chart per state on the same scale. Each line is the state’s z against its own 2011–2025 average; the shaded band is the middle 80% of its ranked quarters.

State Supply Adequacy, New South Wales (21830) · Reading HistoryNode Z-Score by Quarter, September 2012 to March 2026+0.3504σ · position 59.3, ranked against 55 quarters**Reading, ranked quarters**Normal range (middle 80% of ranked quarters)**Current readingThe March quarter 2026 reading, +0.3504σ, ranks 59.3 against 55 quarters and sits inside the normal range of −1.2153σ to +1.0462σ. The highest ranked reading was +1.6375σ in the September quarter 2023, and the lowest −2.6262σ in the June quarter 2021.

Show the data
| Quarter | Reading | Basis |
| ------- | ------- | ----- |
| Q3 2012 | +0.8995σ | Ranked |
| Q4 2012 | +0.9069σ | Ranked |
| Q1 2013 | +0.9249σ | Ranked |
| Q2 2013 | +0.8908σ | Ranked |
| Q3 2013 | +0.8866σ | Ranked |
| Q4 2013 | +0.8288σ | Ranked |
| Q1 2014 | +0.8391σ | Ranked |
| Q2 2014 | +0.7771σ | Ranked |
| Q3 2014 | +0.5419σ | Ranked |
| Q4 2014 | +0.3557σ | Ranked |
| Q1 2015 | +0.1639σ | Ranked |
| Q2 2015 | −0.0177σ | Ranked |
| Q3 2015 | −0.0467σ | Ranked |
| Q4 2015 | −0.1242σ | Ranked |
| Q1 2016 | −0.1030σ | Ranked |
| Q2 2016 | −0.2380σ | Ranked |
| Q3 2016 | −0.2149σ | Ranked |
| Q4 2016 | −0.1708σ | Ranked |
| Q1 2017 | −0.1695σ | Ranked |
| Q2 2017 | −0.0389σ | Ranked |
| Q3 2017 | +0.0043σ | Ranked |
| Q4 2017 | −0.1211σ | Ranked |
| Q1 2018 | −0.2625σ | Ranked |
| Q2 2018 | −0.3473σ | Ranked |
| Q3 2018 | −0.5076σ | Ranked |
| Q4 2018 | −0.6258σ | Ranked |
| Q1 2019 | −0.6206σ | Ranked |
| Q2 2019 | −0.7923σ | Ranked |
| Q3 2019 | −0.7017σ | Ranked |
| Q4 2019 | −0.6161σ | Ranked |
| Q1 2020 | −0.6075σ | Ranked |
| Q2 2020 | −0.6982σ | Ranked |
| Q3 2020 | −1.4918σ | Ranked |
| Q4 2020 | −1.8918σ | Ranked |
| Q1 2021 | −2.5551σ | Ranked |
| Q2 2021 | −2.6262σ | Ranked |
| Q3 2021 | −2.3247σ | Ranked |
| Q4 2021 | −1.7153σ | Ranked |
| Q1 2022 | −0.8004σ | Ranked |
| Q2 2022 | −0.0865σ | Ranked |
| Q3 2022 | +0.7802σ | Ranked |
| Q4 2022 | +1.1271σ | Ranked |
| Q1 2023 | +1.3635σ | Ranked |
| Q2 2023 | +1.4917σ | Ranked |
| Q3 2023 | +1.6375σ | Ranked |
| Q4 2023 | +1.5023σ | Ranked |
| Q1 2024 | +1.3301σ | Ranked |
| Q2 2024 | +0.9179σ | Ranked |
| Q3 2024 | +0.5838σ | Ranked |
| Q4 2024 | +0.3704σ | Ranked |
| Q1 2025 | +0.2988σ | Ranked |
| Q2 2025 | +0.3826σ | Ranked |
| Q3 2025 | +0.3803σ | Ranked |
| Q4 2025 | +0.3306σ | Ranked |
| Q1 2026 | +0.3504σ | Ranked |
State Supply Adequacy, Victoria (21830) · Reading HistoryNode Z-Score by Quarter, September 2012 to March 2026+0.2487σ · position 51.9, ranked against 55 quarters**Reading, ranked quarters**Normal range (middle 80% of ranked quarters)**Current readingThe March quarter 2026 reading, +0.2487σ, ranks 51.9 against 55 quarters and sits inside the normal range of −1.3805σ to +0.8042σ. The highest ranked reading was +1.5275σ in the September quarter 2023, and the lowest −2.9998σ in the June quarter 2021.

Show the data
| Quarter | Reading | Basis |
| ------- | ------- | ----- |
| Q3 2012 | +0.4533σ | Ranked |
| Q4 2012 | +0.5354σ | Ranked |
| Q1 2013 | +0.5411σ | Ranked |
| Q2 2013 | +0.6262σ | Ranked |
| Q3 2013 | +0.6522σ | Ranked |
| Q4 2013 | +0.6440σ | Ranked |
| Q1 2014 | +0.7005σ | Ranked |
| Q2 2014 | +0.6082σ | Ranked |
| Q3 2014 | +0.4486σ | Ranked |
| Q4 2014 | +0.2842σ | Ranked |
| Q1 2015 | +0.1113σ | Ranked |
| Q2 2015 | +0.0003σ | Ranked |
| Q3 2015 | −0.0010σ | Ranked |
| Q4 2015 | +0.0537σ | Ranked |
| Q1 2016 | +0.2745σ | Ranked |
| Q2 2016 | +0.2749σ | Ranked |
| Q3 2016 | +0.2621σ | Ranked |
| Q4 2016 | +0.1712σ | Ranked |
| Q1 2017 | +0.0635σ | Ranked |
| Q2 2017 | +0.0278σ | Ranked |
| Q3 2017 | −0.0252σ | Ranked |
| Q4 2017 | −0.0031σ | Ranked |
| Q1 2018 | +0.0463σ | Ranked |
| Q2 2018 | −0.0088σ | Ranked |
| Q3 2018 | +0.0467σ | Ranked |
| Q4 2018 | +0.0645σ | Ranked |
| Q1 2019 | −0.0035σ | Ranked |
| Q2 2019 | −0.0253σ | Ranked |
| Q3 2019 | +0.0047σ | Ranked |
| Q4 2019 | −0.1229σ | Ranked |
| Q1 2020 | −0.3094σ | Ranked |
| Q2 2020 | −0.6343σ | Ranked |
| Q3 2020 | −1.4936σ | Ranked |
| Q4 2020 | −2.2280σ | Ranked |
| Q1 2021 | −2.8599σ | Ranked |
| Q2 2021 | −2.9998σ | Ranked |
| Q3 2021 | −2.7666σ | Ranked |
| Q4 2021 | −2.0700σ | Ranked |
| Q1 2022 | −1.2109σ | Ranked |
| Q2 2022 | −0.5471σ | Ranked |
| Q3 2022 | +0.3176σ | Ranked |
| Q4 2022 | +0.8141σ | Ranked |
| Q1 2023 | +1.1009σ | Ranked |
| Q2 2023 | +1.4250σ | Ranked |
| Q3 2023 | +1.5275σ | Ranked |
| Q4 2023 | +1.3846σ | Ranked |
| Q1 2024 | +1.2250σ | Ranked |
| Q2 2024 | +0.7893σ | Ranked |
| Q3 2024 | +0.4331σ | Ranked |
| Q4 2024 | +0.2846σ | Ranked |
| Q1 2025 | +0.1916σ | Ranked |
| Q2 2025 | +0.2716σ | Ranked |
| Q3 2025 | +0.3478σ | Ranked |
| Q4 2025 | +0.3014σ | Ranked |
| Q1 2026 | +0.2487σ | Ranked |
State Supply Adequacy, Queensland (21830) · Reading HistoryNode Z-Score by Quarter, September 2012 to March 2026+0.4557σ · position 64.8, ranked against 55 quarters**Reading, ranked quarters**Normal range (middle 80% of ranked quarters)**Current readingThe March quarter 2026 reading, +0.4557σ, ranks 64.8 against 55 quarters and sits inside the normal range of −1.2649σ to +1.4320σ. The highest ranked reading was +2.0364σ in the September quarter 2023, and the lowest −1.4934σ in the December quarter 2015.

Show the data
| Quarter | Reading | Basis |
| ------- | ------- | ----- |
| Q3 2012 | +1.0822σ | Ranked |
| Q4 2012 | +0.9824σ | Ranked |
| Q1 2013 | +0.8268σ | Ranked |
| Q2 2013 | +0.6601σ | Ranked |
| Q3 2013 | +0.5022σ | Ranked |
| Q4 2013 | +0.3534σ | Ranked |
| Q1 2014 | +0.1477σ | Ranked |
| Q2 2014 | +0.0712σ | Ranked |
| Q3 2014 | −0.3504σ | Ranked |
| Q4 2014 | −0.5235σ | Ranked |
| Q1 2015 | −0.9287σ | Ranked |
| Q2 2015 | −1.2997σ | Ranked |
| Q3 2015 | −1.1775σ | Ranked |
| Q4 2015 | −1.4934σ | Ranked |
| Q1 2016 | −1.3187σ | Ranked |
| Q2 2016 | −1.1511σ | Ranked |
| Q3 2016 | −1.2565σ | Ranked |
| Q4 2016 | −1.0736σ | Ranked |
| Q1 2017 | −0.9864σ | Ranked |
| Q2 2017 | −0.9618σ | Ranked |
| Q3 2017 | −0.7764σ | Ranked |
| Q4 2017 | −0.8024σ | Ranked |
| Q1 2018 | −0.6597σ | Ranked |
| Q2 2018 | −0.5621σ | Ranked |
| Q3 2018 | −0.6386σ | Ranked |
| Q4 2018 | −0.3100σ | Ranked |
| Q1 2019 | −0.3443σ | Ranked |
| Q2 2019 | −0.1367σ | Ranked |
| Q3 2019 | +0.0320σ | Ranked |
| Q4 2019 | +0.1977σ | Ranked |
| Q1 2020 | +0.2886σ | Ranked |
| Q2 2020 | +0.0175σ | Ranked |
| Q3 2020 | −0.4042σ | Ranked |
| Q4 2020 | −0.8415σ | Ranked |
| Q1 2021 | −1.3189σ | Ranked |
| Q2 2021 | −1.3802σ | Ranked |
| Q3 2021 | −1.2705σ | Ranked |
| Q4 2021 | −0.8260σ | Ranked |
| Q1 2022 | −0.1636σ | Ranked |
| Q2 2022 | +0.3242σ | Ranked |
| Q3 2022 | +1.1079σ | Ranked |
| Q4 2022 | +1.4967σ | Ranked |
| Q1 2023 | +1.7495σ | Ranked |
| Q2 2023 | +1.9577σ | Ranked |
| Q3 2023 | +2.0364σ | Ranked |
| Q4 2023 | +1.7552σ | Ranked |
| Q1 2024 | +1.5947σ | Ranked |
| Q2 2024 | +1.3349σ | Ranked |
| Q3 2024 | +1.0122σ | Ranked |
| Q4 2024 | +0.9326σ | Ranked |
| Q1 2025 | +0.7036σ | Ranked |
| Q2 2025 | +0.6331σ | Ranked |
| Q3 2025 | +0.6128σ | Ranked |
| Q4 2025 | +0.5433σ | Ranked |
| Q1 2026 | +0.4557σ | Ranked |
State Supply Adequacy, South Australia (21830) · Reading HistoryNode Z-Score by Quarter, September 2012 to March 2026−1.0448σ · position 13.0, ranked against 55 quarters**Reading, ranked quarters**Normal range (middle 80% of ranked quarters)**Current readingThe March quarter 2026 reading, −1.0448σ, ranks 13.0 against 55 quarters and sits inside the normal range of −1.1340σ to +1.5342σ. The highest ranked reading was +2.5237σ in the September quarter 2023, and the lowest −1.5205σ in the March quarter 2021.

Show the data
| Quarter | Reading | Basis |
| ------- | ------- | ----- |
| Q3 2012 | −0.3123σ | Ranked |
| Q4 2012 | −0.2617σ | Ranked |
| Q1 2013 | −0.2401σ | Ranked |
| Q2 2013 | −0.1731σ | Ranked |
| Q3 2013 | −0.1030σ | Ranked |
| Q4 2013 | −0.1725σ | Ranked |
| Q1 2014 | −0.1631σ | Ranked |
| Q2 2014 | −0.2112σ | Ranked |
| Q3 2014 | −0.5062σ | Ranked |
| Q4 2014 | −0.5442σ | Ranked |
| Q1 2015 | −0.7080σ | Ranked |
| Q2 2015 | −1.0997σ | Ranked |
| Q3 2015 | −0.9929σ | Ranked |
| Q4 2015 | −1.2998σ | Ranked |
| Q1 2016 | −1.3879σ | Ranked |
| Q2 2016 | −1.1568σ | Ranked |
| Q3 2016 | −0.8456σ | Ranked |
| Q4 2016 | −0.6543σ | Ranked |
| Q1 2017 | −0.4988σ | Ranked |
| Q2 2017 | −0.2391σ | Ranked |
| Q3 2017 | −0.2481σ | Ranked |
| Q4 2017 | −0.3145σ | Ranked |
| Q1 2018 | −0.1014σ | Ranked |
| Q2 2018 | −0.2239σ | Ranked |
| Q3 2018 | −0.0606σ | Ranked |
| Q4 2018 | −0.0701σ | Ranked |
| Q1 2019 | −0.0113σ | Ranked |
| Q2 2019 | +0.0645σ | Ranked |
| Q3 2019 | +0.3924σ | Ranked |
| Q4 2019 | +1.0849σ | Ranked |
| Q1 2020 | +1.4344σ | Ranked |
| Q2 2020 | +1.2735σ | Ranked |
| Q3 2020 | +0.1519σ | Ranked |
| Q4 2020 | −0.5210σ | Ranked |
| Q1 2021 | −1.5205σ | Ranked |
| Q2 2021 | −1.3261σ | Ranked |
| Q3 2021 | −1.3510σ | Ranked |
| Q4 2021 | −0.9562σ | Ranked |
| Q1 2022 | +0.3998σ | Ranked |
| Q2 2022 | +0.5818σ | Ranked |
| Q3 2022 | +1.5858σ | Ranked |
| Q4 2022 | +2.0423σ | Ranked |
| Q1 2023 | +1.9915σ | Ranked |
| Q2 2023 | +2.2249σ | Ranked |
| Q3 2023 | +2.5237σ | Ranked |
| Q4 2023 | +2.0600σ | Ranked |
| Q1 2024 | +1.4569σ | Ranked |
| Q2 2024 | +0.8689σ | Ranked |
| Q3 2024 | +0.0775σ | Ranked |
| Q4 2024 | −0.0647σ | Ranked |
| Q1 2025 | −0.1941σ | Ranked |
| Q2 2025 | −0.5542σ | Ranked |
| Q3 2025 | −0.3982σ | Ranked |
| Q4 2025 | −0.7284σ | Ranked |
| Q1 2026 | −1.0448σ | Ranked |
State Supply Adequacy, Western Australia (21830) · Reading HistoryNode Z-Score by Quarter, September 2012 to March 2026+0.4072σ · position 66.7, ranked against 55 quarters**Reading, ranked quarters**Normal range (middle 80% of ranked quarters)**Current readingThe March quarter 2026 reading, +0.4072σ, ranks 66.7 against 55 quarters and sits inside the normal range of −1.5044σ to +1.2048σ. The highest ranked reading was +1.7099σ in the June quarter 2023, and the lowest −2.0629σ in the June quarter 2016.

Show the data
| Quarter | Reading | Basis |
| ------- | ------- | ----- |
| Q3 2012 | +0.8676σ | Ranked |
| Q4 2012 | +0.8343σ | Ranked |
| Q1 2013 | +0.7166σ | Ranked |
| Q2 2013 | +0.5733σ | Ranked |
| Q3 2013 | +0.3005σ | Ranked |
| Q4 2013 | −0.1435σ | Ranked |
| Q1 2014 | −0.4544σ | Ranked |
| Q2 2014 | −0.8556σ | Ranked |
| Q3 2014 | −1.1021σ | Ranked |
| Q4 2014 | −1.1980σ | Ranked |
| Q1 2015 | −1.4177σ | Ranked |
| Q2 2015 | −1.5386σ | Ranked |
| Q3 2015 | −1.6849σ | Ranked |
| Q4 2015 | −1.9377σ | Ranked |
| Q1 2016 | −1.9701σ | Ranked |
| Q2 2016 | −2.0629σ | Ranked |
| Q3 2016 | −1.8100σ | Ranked |
| Q4 2016 | −1.4532σ | Ranked |
| Q1 2017 | −1.2115σ | Ranked |
| Q2 2017 | −0.7703σ | Ranked |
| Q3 2017 | −0.6115σ | Ranked |
| Q4 2017 | −0.4232σ | Ranked |
| Q1 2018 | −0.3558σ | Ranked |
| Q2 2018 | −0.2929σ | Ranked |
| Q3 2018 | −0.1757σ | Ranked |
| Q4 2018 | −0.1137σ | Ranked |
| Q1 2019 | +0.0214σ | Ranked |
| Q2 2019 | +0.1114σ | Ranked |
| Q3 2019 | +0.2947σ | Ranked |
| Q4 2019 | +0.4940σ | Ranked |
| Q1 2020 | +0.6162σ | Ranked |
| Q2 2020 | +0.5836σ | Ranked |
| Q3 2020 | +0.3713σ | Ranked |
| Q4 2020 | +0.2735σ | Ranked |
| Q1 2021 | +0.1329σ | Ranked |
| Q2 2021 | +0.2179σ | Ranked |
| Q3 2021 | +0.1849σ | Ranked |
| Q4 2021 | +0.1334σ | Ranked |
| Q1 2022 | +0.2178σ | Ranked |
| Q2 2022 | +0.3652σ | Ranked |
| Q3 2022 | +0.8111σ | Ranked |
| Q4 2022 | +1.2114σ | Ranked |
| Q1 2023 | +1.5547σ | Ranked |
| Q2 2023 | +1.7099σ | Ranked |
| Q3 2023 | +1.6800σ | Ranked |
| Q4 2023 | +1.5656σ | Ranked |
| Q1 2024 | +1.4337σ | Ranked |
| Q2 2024 | +1.1948σ | Ranked |
| Q3 2024 | +0.8995σ | Ranked |
| Q4 2024 | +0.6466σ | Ranked |
| Q1 2025 | +0.4561σ | Ranked |
| Q2 2025 | +0.3372σ | Ranked |
| Q3 2025 | +0.3717σ | Ranked |
| Q4 2025 | +0.4001σ | Ranked |
| Q1 2026 | +0.4072σ | Ranked |
State Supply Adequacy, Tasmania (21830) · Reading HistoryNode Z-Score by Quarter, September 2012 to March 2026−0.1101σ · position 68.5, ranked against 55 quarters**Reading, ranked quarters**Normal range (middle 80% of ranked quarters)**Current readingThe March quarter 2026 reading, −0.1101σ, ranks 68.5 against 55 quarters and sits inside the normal range of −0.9724σ to +1.6685σ. The highest ranked reading was +1.7754σ in the December quarter 2018, and the lowest −1.1441σ in the December quarter 2023.

Show the data
| Quarter | Reading | Basis |
| ------- | ------- | ----- |
| Q3 2012 | −1.0072σ | Ranked |
| Q4 2012 | −0.9662σ | Ranked |
| Q1 2013 | −0.8644σ | Ranked |
| Q2 2013 | −0.7408σ | Ranked |
| Q3 2013 | −0.5769σ | Ranked |
| Q4 2013 | −0.3392σ | Ranked |
| Q1 2014 | −0.2778σ | Ranked |
| Q2 2014 | −0.3441σ | Ranked |
| Q3 2014 | −0.2883σ | Ranked |
| Q4 2014 | −0.4332σ | Ranked |
| Q1 2015 | −0.4601σ | Ranked |
| Q2 2015 | −0.3664σ | Ranked |
| Q3 2015 | −0.3985σ | Ranked |
| Q4 2015 | −0.5961σ | Ranked |
| Q1 2016 | −0.4409σ | Ranked |
| Q2 2016 | −0.3516σ | Ranked |
| Q3 2016 | +0.0823σ | Ranked |
| Q4 2016 | +0.8422σ | Ranked |
| Q1 2017 | +1.1959σ | Ranked |
| Q2 2017 | +1.6315σ | Ranked |
| Q3 2017 | +1.6931σ | Ranked |
| Q4 2017 | +1.6436σ | Ranked |
| Q1 2018 | +1.7275σ | Ranked |
| Q2 2018 | +1.7508σ | Ranked |
| Q3 2018 | +1.7220σ | Ranked |
| Q4 2018 | +1.7754σ | Ranked |
| Q1 2019 | +1.6851σ | Ranked |
| Q2 2019 | +1.4495σ | Ranked |
| Q3 2019 | +1.2909σ | Ranked |
| Q4 2019 | +1.4504σ | Ranked |
| Q1 2020 | +1.3830σ | Ranked |
| Q2 2020 | +1.2753σ | Ranked |
| Q3 2020 | +0.6345σ | Ranked |
| Q4 2020 | −0.1669σ | Ranked |
| Q1 2021 | −0.6167σ | Ranked |
| Q2 2021 | −0.9493σ | Ranked |
| Q3 2021 | −1.1203σ | Ranked |
| Q4 2021 | −0.9540σ | Ranked |
| Q1 2022 | −0.9106σ | Ranked |
| Q2 2022 | −0.7814σ | Ranked |
| Q3 2022 | −0.3906σ | Ranked |
| Q4 2022 | −0.4641σ | Ranked |
| Q1 2023 | −0.6508σ | Ranked |
| Q2 2023 | −0.9765σ | Ranked |
| Q3 2023 | −1.0631σ | Ranked |
| Q4 2023 | −1.1441σ | Ranked |
| Q1 2024 | −1.0821σ | Ranked |
| Q2 2024 | −0.9009σ | Ranked |
| Q3 2024 | −0.7808σ | Ranked |
| Q4 2024 | −0.6149σ | Ranked |
| Q1 2025 | −0.4529σ | Ranked |
| Q2 2025 | −0.2863σ | Ranked |
| Q3 2025 | −0.2342σ | Ranked |
| Q4 2025 | −0.2405σ | Ranked |
| Q1 2026 | −0.1101σ | Ranked |
State Supply Adequacy, Northern Territory (21830) · Reading HistoryNode Z-Score by Quarter, September 2012 to March 2026+0.9625σ · position 74.1, ranked against 55 quarters**Reading, ranked quarters**Normal range (middle 80% of ranked quarters)**Current readingThe March quarter 2026 reading, +0.9625σ, ranks 74.1 against 55 quarters and sits inside the normal range of −1.1600σ to +1.2921σ. The highest ranked reading was +1.5876σ in the September quarter 2025, and the lowest −2.2529σ in the March quarter 2015.

Show the data
| Quarter | Reading | Basis |
| ------- | ------- | ----- |
| Q3 2012 | +0.4537σ | Ranked |
| Q4 2012 | +0.7536σ | Ranked |
| Q1 2013 | +0.6592σ | Ranked |
| Q2 2013 | +0.7543σ | Ranked |
| Q3 2013 | +0.5064σ | Ranked |
| Q4 2013 | −0.1210σ | Ranked |
| Q1 2014 | −0.4220σ | Ranked |
| Q2 2014 | −1.4625σ | Ranked |
| Q3 2014 | −1.9700σ | Ranked |
| Q4 2014 | −2.2063σ | Ranked |
| Q1 2015 | −2.2529σ | Ranked |
| Q2 2015 | −1.2983σ | Ranked |
| Q3 2015 | −1.1149σ | Ranked |
| Q4 2015 | −0.9043σ | Ranked |
| Q1 2016 | −0.7177σ | Ranked |
| Q2 2016 | −0.9069σ | Ranked |
| Q3 2016 | −0.4029σ | Ranked |
| Q4 2016 | −0.2595σ | Ranked |
| Q1 2017 | −0.3798σ | Ranked |
| Q2 2017 | −0.1352σ | Ranked |
| Q3 2017 | −0.3535σ | Ranked |
| Q4 2017 | −0.3404σ | Ranked |
| Q1 2018 | −0.2588σ | Ranked |
| Q2 2018 | −0.5079σ | Ranked |
| Q3 2018 | −0.5689σ | Ranked |
| Q4 2018 | −0.6129σ | Ranked |
| Q1 2019 | −0.8088σ | Ranked |
| Q2 2019 | −0.6694σ | Ranked |
| Q3 2019 | −0.5992σ | Ranked |
| Q4 2019 | −0.2954σ | Ranked |
| Q1 2020 | +0.2136σ | Ranked |
| Q2 2020 | +0.1857σ | Ranked |
| Q3 2020 | −0.0302σ | Ranked |
| Q4 2020 | −0.2346σ | Ranked |
| Q1 2021 | −0.6488σ | Ranked |
| Q2 2021 | −1.1900σ | Ranked |
| Q3 2021 | −0.7609σ | Ranked |
| Q4 2021 | −0.1504σ | Ranked |
| Q1 2022 | +0.4490σ | Ranked |
| Q2 2022 | +1.1649σ | Ranked |
| Q3 2022 | +1.3418σ | Ranked |
| Q4 2022 | +1.3818σ | Ranked |
| Q1 2023 | +1.3246σ | Ranked |
| Q2 2023 | +1.2434σ | Ranked |
| Q3 2023 | +1.1512σ | Ranked |
| Q4 2023 | +1.0546σ | Ranked |
| Q1 2024 | +0.8475σ | Ranked |
| Q2 2024 | +0.9876σ | Ranked |
| Q3 2024 | +1.0181σ | Ranked |
| Q4 2024 | +1.2226σ | Ranked |
| Q1 2025 | +1.5695σ | Ranked |
| Q2 2025 | +1.5129σ | Ranked |
| Q3 2025 | +1.5876σ | Ranked |
| Q4 2025 | +1.2008σ | Ranked |
| Q1 2026 | +0.9625σ | Ranked |
State Supply Adequacy, Australian Capital Territory (21830) · Reading HistoryNode Z-Score by Quarter, September 2012 to March 2026−0.1470σ · position 37.0, ranked against 55 quarters**Reading, ranked quarters**Normal range (middle 80% of ranked quarters)**Current readingThe March quarter 2026 reading, −0.1470σ, ranks 37.0 against 55 quarters and sits inside the normal range of −1.0356σ to +1.2575σ. The highest ranked reading was +1.7386σ in the June quarter 2017, and the lowest −2.2664σ in the September quarter 2021.

Show the data
| Quarter | Reading | Basis |
| ------- | ------- | ----- |
| Q3 2012 | +0.7367σ | Ranked |
| Q4 2012 | +0.0633σ | Ranked |
| Q1 2013 | −0.9398σ | Ranked |
| Q2 2013 | −0.9192σ | Ranked |
| Q3 2013 | −1.6381σ | Ranked |
| Q4 2013 | −1.0636σ | Ranked |
| Q1 2014 | −0.8041σ | Ranked |
| Q2 2014 | −0.9076σ | Ranked |
| Q3 2014 | +0.0378σ | Ranked |
| Q4 2014 | −0.9222σ | Ranked |
| Q1 2015 | −0.4804σ | Ranked |
| Q2 2015 | −0.6665σ | Ranked |
| Q3 2015 | −0.9937σ | Ranked |
| Q4 2015 | −0.1229σ | Ranked |
| Q1 2016 | +0.1684σ | Ranked |
| Q2 2016 | +0.6812σ | Ranked |
| Q3 2016 | +1.2170σ | Ranked |
| Q4 2016 | +1.4084σ | Ranked |
| Q1 2017 | +1.7004σ | Ranked |
| Q2 2017 | +1.7386σ | Ranked |
| Q3 2017 | +1.2699σ | Ranked |
| Q4 2017 | +1.2389σ | Ranked |
| Q1 2018 | +0.9316σ | Ranked |
| Q2 2018 | +1.1945σ | Ranked |
| Q3 2018 | +1.3361σ | Ranked |
| Q4 2018 | +1.6207σ | Ranked |
| Q1 2019 | +0.9892σ | Ranked |
| Q2 2019 | +0.5271σ | Ranked |
| Q3 2019 | +0.8034σ | Ranked |
| Q4 2019 | −0.0336σ | Ranked |
| Q1 2020 | −0.2845σ | Ranked |
| Q2 2020 | +0.2936σ | Ranked |
| Q3 2020 | −0.9778σ | Ranked |
| Q4 2020 | −2.0200σ | Ranked |
| Q1 2021 | −1.9398σ | Ranked |
| Q2 2021 | −2.2376σ | Ranked |
| Q3 2021 | −2.2664σ | Ranked |
| Q4 2021 | −0.8488σ | Ranked |
| Q1 2022 | +0.1698σ | Ranked |
| Q2 2022 | −0.1419σ | Ranked |
| Q3 2022 | +0.6368σ | Ranked |
| Q4 2022 | +0.3266σ | Ranked |
| Q1 2023 | −0.1476σ | Ranked |
| Q2 2023 | +0.2375σ | Ranked |
| Q3 2023 | +0.3850σ | Ranked |
| Q4 2023 | +0.4469σ | Ranked |
| Q1 2024 | +0.5444σ | Ranked |
| Q2 2024 | +0.1576σ | Ranked |
| Q3 2024 | −0.0835σ | Ranked |
| Q4 2024 | −0.2639σ | Ranked |
| Q1 2025 | −0.1848σ | Ranked |
| Q2 2025 | −0.0790σ | Ranked |
| Q3 2025 | −0.0503σ | Ranked |
| Q4 2025 | +0.1562σ | Ranked |
| Q1 2026 | −0.1470σ | Ranked |

6Analytical Interpretation
In the year to March 2026, population grew faster than the dwelling stock in three jurisdictions: the Northern Territory (+0.72 points, with the dwelling stock growing 0.78%), Western Australia (+0.64 points; population growth of 2.12%, the fastest of any jurisdiction) and Queensland (+0.18 points). In New South Wales and Victoria the two grew at almost the same pace. In the ACT (−0.60 points), South Australia (−0.33) and Tasmania (−0.27) the dwelling stock grew well ahead of population.

Against each state’s own history, the Northern Territory reads highest (+0.9625σ, position 74.1) and South Australia lowest (−1.0448σ, 13.0). South Australia’s reading has fallen in each of the past two quarters, from −0.40σ in September 2025, as population growth slowed to 0.97% while dwellings grew 1.30%. Western Australia’s persons per dwelling, 2.582, is the highest of its record.

Six of the nine series, including the national reading, peaked in 2023 after the border reopened; five reached their lows in 2021, while it was closed. Tasmania’s history differs: its highest readings were in 2016–2019, which is why its current reading sits below its average (−0.1101σ) yet above most of its quarters (position 68.5).

7Related Nodes
The national counterpart and the other state measures.

[21540 →Housing Supply AdequacyThe same measure, national. Q1 2026: +0.3750σ, 61.1 of 55 quarters.](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21500/21540-housing-supply-adequacy/)[21810 →Public Investment IntensityPublic investment as a share of state final demand, each state against its own history. Q2 2026: −0.5392σ (ACT) to +1.7925σ (South Australia).](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21800/21810-public-investment-intensity/)[21840 →State Completion LagChange over the year in months of pipeline, each state against its own history. Q2 2026: −1.1775σ (New South Wales) to +1.7579σ (Queensland).](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21800/21840-state-completion-lag/)[21820 →State Price-to-EarningsYears of full-time earnings the average dwelling costs, each state against its own history. Q2 2026: −0.1226σ (Victoria) to +4.0549σ (Western Australia).](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21800/21820-state-price-to-earnings/)[21234 →State Labour ConditionsEmployed share and job vacancy rate for each state and territory. Q2 2026: −0.1378σ (ACT) to +0.9007σ (Queensland).](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21200/21230-employment-gdp/21234-state-labour-conditions/)[Parent series →21800 — State & Territory Conditions](https://australianproperty.network/apn-codex/series-20000/series-21000/series-21800/)

8Certification Statement

APN Codex Node 21830 — State Supply Adequacy — Certified
All inputs are sourced from Tier-1 sovereign statistical releases (ABS)- Each of the eight Z-scores (Q1 2026) is derived directly from that state’s inputs against its own 2011–2025 baseline, not manually entered or estimated- Each position is an empirical percentile rank against the state’s 55 quarters- The modelled dwelling stock, population revisions and the short history are disclosed- No commercial data provider dependency exists within this node

**Certified:** 5 October 2026
**Source tier:** Tier-1 sovereign statistical agency (ABS)

##### Node Parameters

Node21830
Series21800
StatusCertified
Readings8 states and territories
Range−1.0448σ to +0.9625σ
PeriodQ1 2026
Vintage2026-Q4
InputGrowth gap
Baseline2011–2025, per state
Ranked55 qtrs per state
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