Castlecrag NSW Property Investment

Willoughby · 2068 · Score: 71/100 · Buy

Median House Price
$4.68M
Rental Yield
2.0%
Vacancy Rate
1.6%
Median Weekly Rent
$1800/wk
Median Unit Price
$1.59M
Population
2,965
Days on Market
90 days
Annual Growth
15.0%
AI Investment Analysis

Castlecrag NSW Investment Brief

## 1. Investment Verdict Buy – the suburb’s 1‑year price growth of 15.0% is the strongest single indicator of upside.

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## 2. Market Overview - Median house price: $4,680,000 - Median unit price: $1,593,274 - 1‑year price growth: 15.0% - 5‑year CAGR: 5.5% per annum - 3‑year growth forecast: 2.2%

*Signal:* A 15 % jump in the last 12 months and a 5.5 % five‑year CAGR point to strong capital‑growth momentum. With no days‑on‑market figure supplied, we cannot quantify buyer‑seller balance, but the price acceleration alone suggests a seller‑favourable environment for the near term.

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## 3. Rental Market - Median weekly rent: $1,800 - Gross rental yield: 2.0 % - Vacancy rate: *Data not provided* - Demand rating: *Data not provided*

*Interpretation:* A 2 % gross yield is modest given the high price base, indicating that cash‑flow returns are limited. Investors should rely primarily on capital growth rather than rental income.

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## 4. Short‑Term Rental Opportunity - STR nightly rate: *Data not provided* - STR occupancy: *Data not provided* - Estimated annual STR revenue: *Data not provided*

*Conclusion:* With no STR metrics available, we cannot assess a short‑term rental case. Given the strong long‑term price trajectory, a long‑term rental (LTR) focus is the safer default.

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## 5. Infrastructure & Growth Drivers - Known projects, transport upgrades, employment hubs: *Data not provided*

*Note:* Absence of specific infrastructure data means we cannot attribute demand to upcoming projects or transport improvements. The suburb’s existing desirability (high price and rent levels) already reflects strong underlying demand.

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## 6. Bull Case Assume the 5‑year CAGR of 5.5 % continues unchanged:

  • Projected median house price in 5 years:
  • Projected median unit price in 5 years:

If growth sustains, investors could realise roughly $1.44 m (house) or $0.49 m (unit) of capital appreciation over five years, far outweighing the modest 2 % rental yield.

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## 7. Risks | Risk | Quantified Concern | |------|--------------------| | Low rental yield | Gross yield sits at 2.0 %, leaving cash‑flow vulnerable to any rise in borrowing costs. | | Interest‑rate sensitivity | Higher rates increase financing costs while rental income remains flat at 2 % yield. | | Supply pipeline | Any new high‑end developments could add inventory, pressuring both price growth and yields (no supply data supplied, but the risk exists). | | Vacancy risk | Vacancy rate not disclosed; a rise would further erode the thin 2 % yield. | | Data gaps | Lack of vacancy, demand rating, STR, and infrastructure information limits full risk assessment. |

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## 8. The Play - Entry price range: *Data not provided* – target properties priced at or below the current median levels ($4.68 m for houses, $1.59 m for units). - Minimum yield target: 2.0 % (the suburb’s current gross yield). - Watch signals: 1. Any published days‑on‑market figure – a rise would hint at cooling demand. 2. Announcements of new high‑end developments or zoning changes. 3. Movements in the cash‑rate that could affect financing costs. - Recommended strategy: Acquire a high‑quality house or unit at or under the median price, lock in a low‑interest loan, and hold for 5‑7 years to capture the projected 5‑year price uplift. Prioritise long‑term rental (LTR) given the absence of STR data and the suburb’s strong capital‑growth profile. Monitor the above watch signals to time any exit or additional acquisition.

Gentrification Index

Early gentrification signals4.0/10
▼High SEIFA decile — already upgraded or established affluent area
—Moderate capital growth (5.5% CAGR)
▲Inner/middle ring location (7.6km to CBD) — high gentrification corridor
▲Active development pipeline (1871 approvals) — supply attracting new residents
▲Strong public transport infrastructure — supports walkable gentrification

Growth Forecast

low confidence
1yr Forecast
5.1%
p.a.
2yr Forecast
4.7%
p.a.
5yr Forecast
4.1%
p.a.

Basis: 5yr CAGR 5.5% + 10yr CAGR 6.5%

Growth drivers
  • +Low rental vacancy (1.6%) — constrained supply
  • +Premium transport infrastructure — supports long-term capital growth
Headwinds
  • −Slow market (90 days avg) — buyer hesitancy
  • −High supply pipeline (1871 new approvals) — may cap price growth

Suburb Metric Thresholds

10 green3 yellow3 red
Rental Vacancy Rate
1.6 high impact
Days on Market
90 high impact
Weekly Rent (house)
1800 medium impact
5yr Price CAGR
5.46 high impact
10yr Price CAGR
6.54 high impact
1yr Price Growth
15 medium impact
Population Growth
0.75 high impact
Median Household Income
3232 medium impact
Unemployment Rate
3.6 medium impact
Public Transport Score
38 medium impact
School Zone Quality
6.8 medium impact
Distance to CBD
7.56 medium impact
SEIFA Advantage/Disadvantage
10 medium impact
Owner Occupier Rate
73.3 medium impact
Gross Rental Yield (%)
2 high impact
Net Rental Yield (%)
0.5 high impact

Macro Environment

Macro Indicators

Cash Rate

4.35%

▲ 0.25%

Cash rate as at 2026-05-06 · Credit data 2026-07

Suburb Supply & Demand

Suburb Supply Pipeline — New Dwelling Approvals

127

2020

281

2021

628

2022

611

2023

224

2025

New dwelling approvals — higher numbers mean more future supply

Socio-Economic Profile

Source: ABS Census 2021

SEIFA Index · Postcode 2068

Most disadvantagedLeast disadvantaged

Decile 10 of 10 — Low disadvantage

Population

17,450

Education (IEO)

10/10

Econ. Resources (IER)

10/10

10-Year Investment Projection

Modelled on Castlecrag NSW data — rent, capital growth, tax, and depreciation over 10 years.

Pre-filled: $1800/wk median rent for Castlecrag. Capital growth and rent increase are editable assumptions.

Schools

In your catchment

Willoughby PS
PrimaryGovernment
8.9/10
Willoughby GHS
SecondaryGovernment
8.9/10
Mosman HS
SecondaryGovernment
8.5/10
Cammeraygal HS
SecondaryGovernment
8.5/10

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.