Plympton SA Property Investment

Marion · 5038 · Score: 70/100 · Buy

Median House Price
$1.42M
Rental Yield
2.5%
Vacancy Rate
0.8%
Median Weekly Rent
$690/wk
Median Unit Price
$630K
Population
5,459
Days on Market
20 days
Annual Growth
12.0%

Plympton Short-Term Rental (Airbnb) Market

Avg Nightly Rate
$458.31/night
Occupancy Rate
42%
Est. Annual Revenue
$70K
AI Investment Analysis

Plympton SA Investment Brief

BUY2.5% 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

Early gentrification signals5.5/10
Middle-tier SEIFA — moderate gentrification pressure
Moderate capital growth (4.9% CAGR)
Inner/middle ring location (6.0km to CBD) — high gentrification corridor
Mixed tenure (38% renters) — transitional suburb profile
Active development pipeline (3617 approvals) — supply attracting new residents
Strong public transport infrastructure — supports walkable gentrification

Growth Forecast

high confidence
1yr Forecast
5.9%
p.a.
2yr Forecast
5.5%
p.a.
5yr Forecast
4.7%
p.a.

Basis: 5yr CAGR 4.9% + 10yr CAGR 5.0%

Growth drivers
  • +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
Headwinds
  • High supply pipeline (3617 new approvals) — may cap price growth

Suburb Metric Thresholds

7 green7 yellow2 red
Rental Vacancy Rate
0.8 high impact
Days on Market
20 high impact
Weekly Rent (house)
690 medium impact
5yr Price CAGR
4.89 high impact
10yr Price CAGR
4.98 high impact
1yr Price Growth
11.98 medium impact
Population Growth
2.66 high impact
Median Household Income
1553 medium impact
Unemployment Rate
5.3 medium impact
Public Transport Score
9.1 medium impact
School Zone Quality
6.9 medium impact
Distance to CBD
5.97 medium impact
SEIFA Advantage/Disadvantage
6 medium impact
Owner Occupier Rate
57.5 medium impact
Gross Rental Yield (%)
2.54 high impact
Net Rental Yield (%)
1.04 high impact

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 2021

SEIFA Index · Postcode 5038

Most disadvantagedLeast disadvantaged

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

Plympton International College
SecondaryGovernment
6.8/10

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.

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Data sourced from ABS, state government property sales, and Airbnb market analytics. For informational purposes only — not financial advice.