Thornlie WA Property Investment
Gosnells · 6108 · Score: 63/100 · Hold
Thornlie Short-Term Rental (Airbnb) Market
Thornlie WA Investment Brief
HOLD — 3.8% gross yield on a $967,568 median.
THE MARKET
Thornlie has compounded at 1.9%/yr over 5 years — a house that cost $880,665 in 2021 is worth $967,568 today. Properties are sitting on market for 18 days (sellers have the leverage). At the same growth rate, today's median reaches $1,063,047 by 2031.
- Median house: $967,568 | Units: $642,809
- Gross yield: 3.8% | Net yield: 2.3%
- 5yr price CAGR: 1.9%/yr | 3yr forecast: 13.5%/yr
- Population: 23,665 | Owner-occupier rate: 76% | Affluence: Average
- Supply pipeline: Low — Price growth outpacing new supply, limited development pipeline
RENTAL SNAPSHOT
- Vacancy: 0.9% (improving) | Rental demand: Very High
- Median weekly rent: $700/wk | Days on market: 18 (improving)
- Landlord market — rents likely to keep rising.
SHORT-TERM RENTAL
Insufficient STR data for this suburb. Run a specific address analysis for property-level STR projections.
INFRASTRUCTURE & CATALYSTS
- METRONET (Perth Rail Expansion) (Under Construction)
- METRONET Thornlie-Cockburn Link (under_construction)
- Transport: Standard suburban transport access
BULL CASE
If Thornlie maintains 3%+ annual growth and vacancy stays below 0.8%, median prices could reach $1,112,703 within 3 years with yields compressing slightly as capital values rise.
BEAR CASE
A market correction or interest rate shock could see prices in Thornlie pull back 10-15% from $967,568, with vacancy rising to 1.6% and rental yields softening as tenants gain leverage.
KEY RISKS
- No significant risk factors identified for this suburb
COMPARABLE MARKETS
- Mandurah (WA): $746,319 median, 3.8% yield, 16.5% 1yr growth
- Balga (WA): $750,000 median, 5.0% yield, 14.1% 1yr growth
- Girrawheen (WA): $775,000 median, 4.4% yield, 16.5% 1yr growth
THE PLAY
Thornlie offers balanced fundamentals but does not present an urgent buying signal. The market is in a recovery phase with low vacancy risk. Monitor vacancy trends and price movements over the next 6-12 months. Only enter if a property can be acquired at or below median pricing with yields exceeding 4.3%.
- Entry range: $870,811 – $1,064,325
- Minimum gross yield to target: 4.5%
- Watch signal: vacancy staying below 2% and days on market holding under 35
This analysis is for informational purposes only and does not constitute financial, legal, or investment advice. Seek professional advice before making investment decisions.
Gentrification Index
Growth Forecast
high confidenceBasis: 5yr CAGR 1.9% + 10yr CAGR 3.8%
- +Very tight rental market (vacancy 0.9%) — upward price pressure
- +Fast sales (18 days avg) — strong buyer demand
- +Premium transport infrastructure — supports long-term capital growth
- −High supply pipeline (2904 new approvals) — may cap price growth
Suburb Metric Thresholds
Macro Environment
Macro Indicators
Cash Rate
4.35%
▲ 0.25%Cash rate as at 2026-05-06 · Credit data 2026-04
Suburb Supply & Demand
Suburb Supply Pipeline — New Dwelling Approvals
428
2020
815
2021
580
2022
374
2023
707
2025
New dwelling approvals — higher numbers mean more future supply
Socio-Economic Profile
Source: ABS Census 2021SEIFA Index · Postcode 6108
Decile 4 of 10 — Average
Population
23,665
Education (IEO)
4/10
Econ. Resources (IER)
6/10
10-Year Investment Projection
Modelled on Thornlie WA data — rent, capital growth, tax, and depreciation over 10 years.
Pre-filled: $700/wk median rent for Thornlie. Capital growth and rent increase are editable assumptions.
Nearby Suburbs
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Analyse a Property →Data sourced from ABS, state government property sales, and Airbnb market analytics. For informational purposes only — not financial advice.