Plympton SA Property Investment
Marion · 5038 · Score: 70/100 · Buy
Plympton Short-Term Rental (Airbnb) Market
Plympton SA Investment Brief
BUY — 2.5% gross yield on a $1,415,000 median.
THE MARKET
Plympton has compounded at 4.9%/yr over 5 years — a house that cost $1,113,984 in 2021 is worth $1,415,000 today. Properties are sitting on market for 20 days (sellers have the leverage). At the same growth rate, today's median reaches $1,797,355 by 2031.
- Median house: $1,415,000 | Units: $629,606
- Gross yield: 2.5% | Net yield: 1.0%
- 5yr price CAGR: 4.9%/yr | 3yr forecast: 13.5%/yr
- Population: 5,459 | Owner-occupier rate: 58% | Affluence: High
- Supply pipeline: Moderate — Strong population growth likely attracting new development approvals
RENTAL SNAPSHOT
- Vacancy: 0.8% (improving) | Rental demand: Very High
- Median weekly rent: $690/wk | Days on market: 20 (improving)
- Landlord market — rents likely to keep rising.
SHORT-TERM RENTAL
- Median nightly rate: $458/night | Occupancy: 42%
- Estimated annual STR gross: ~$70,259/yr
- vs long-term rent: $35,880/yr (+96% STR premium — factor in higher management costs)
INFRASTRUCTURE & CATALYSTS
- North South Corridor (South Australia) (Under Construction)
- Adelaide Metro Train Services Franchise (Under Delivery)
- Transport: Marion Road station 0.5km away
BULL CASE
If Plympton maintains 3%+ annual growth and vacancy stays below 0.8%, median prices could reach $1,627,250 within 3 years with yields compressing slightly as capital values rise.
BEAR CASE
A market correction or interest rate shock could see prices in Plympton pull back 10-15% from $1,415,000, with vacancy rising to 1.4% and rental yields softening as tenants gain leverage.
KEY RISKS
- Bushfire risk: HIGH (planning_overlay) — confirm BAL rating and any bushfire overlay obligations for the property
COMPARABLE MARKETS
- Kilburn (SA): $1,093,556 median, 2.8% yield, 31.9% 1yr growth
- Woodville North (SA): $1,130,000 median, 2.9% yield, 1.9% 1yr growth
- North Haven (SA): $997,500 median, 3.5% yield, 8.3% 1yr growth
THE PLAY
Plympton presents a compelling investment opportunity. The combination of solid fundamentals and very high rental demand supports entry at current price levels. Proceed with due diligence on specific properties. Target gross yields above 2.5% and prioritise properties with value-add potential. Consider timing entry around the current stable phase of the market cycle.
- Entry range: $1,273,500 – $1,556,500
- 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 4.9% + 10yr CAGR 5.0%
- +Strong population growth (2.7%/yr) driving demand
- +Very tight rental market (vacancy 0.8%) — upward price pressure
- +Active market (20 days avg)
- +Premium transport infrastructure — supports long-term capital growth
- −High supply pipeline (3617 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
789
2020
799
2021
636
2022
626
2023
767
2025
New dwelling approvals — higher numbers mean more future supply
Socio-Economic Profile
Source: ABS Census 2021SEIFA Index · Postcode 5038
Decile 6 of 10 — Average
Population
17,401
Education (IEO)
8/10
Econ. Resources (IER)
2/10
10-Year Investment Projection
Modelled on Plympton SA data — rent, capital growth, tax, and depreciation over 10 years.
Pre-filled: $690/wk median rent for Plympton. Capital growth and rent increase are editable assumptions.
Schools
In your catchment
These are the government-school zones containing this suburb centroid. Specific addresses within the suburb may fall in different catchments — confirm with the school directly.
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.