Castle Cove
Investment Score
82
/100
AI Intelligence Summary
Castle Cove is an exclusive harbourside suburb on Sydney's prestigious Lower North Shore, renowned for its premium waterfront properties and tranquil residential character. Located within the Willoughby City Council area, this small, tightly-held suburb offers stunning harbour views and direct water access through Castlecrag Marina. The area is dominated by high-value detached homes occupied by affluent families and established professionals, with limited unit development maintaining its low-density appeal. Castle Cove benefits from excellent educational opportunities, including the highly regarded Castle Cove Public School and proximity to selective schools like Willoughby Girls High School. The suburb's strong community spirit is fostered through local tennis and sailing clubs, while residents enjoy easy access to harbourside parks and reserves including Sailors Bay. Despite limited public transport options, the area's car-dependent lifestyle suits its affluent demographic, with well-maintained road infrastructure and comprehensive NBN coverage. The property market remains resilient due to supply constraints and high demand driven by school catchments and harbour proximity, making it one of the North Shore's most desirable residential enclaves.
Strengths
- •Premium harbourside location with water access and marina facilities
- •Highly regarded schools including Castle Cove Public School and selective school proximity
- •Exclusive low-density residential character with predominantly detached homes
- •Strong community atmosphere with active tennis and sailing clubs
Opportunities
- •Continued capital growth driven by supply constraints
- •Potential for luxury home renovations and extensions
- •Growing demand for harbourside lifestyle properties
- •Possible future transport infrastructure improvements
Considerations
- •Limited public transport connectivity requiring car dependency
- •Very high property prices limiting affordability
- •Minimal commercial amenities requiring travel for shopping and dining
- •Limited housing stock restricting buyer choice
Property Market
$4.20M
+8.5% 1yr
$1.85M
+6.8% 1yr
$2.80M
$2,250/wk
$1,200/wk
35
1.2%
78.0%
Price Growth
| Type | 1 Year | 3 Year | 5 Year |
|---|---|---|---|
| House | +8.5% | +22.0% | +38.0% |
| Unit | +6.8% | +18.5% | +32.0% |
Rental Yields
House Yield
2.8%
Unit Yield
3.4%
Townhouse Yield
3.1%
Investment Scorecard
Demand/Supply Ratio: 2.80
Demand exceeds supply — favourable for sellers
Tax & Financial Intelligence
CPA-grade analysis for Castle Cove at median house price
+8% surcharge
$2250/wk
Negatively geared
Reduces taxable income
~$2,421/week
Based on 7.6% p.a. growth (from 5-year trend), 50% CGT discount, 39% MTR
5-Year Hold
10-Year Hold
Investor Quick Summary
Entry cost (stamp duty)
$221,850
After-tax yield
1.71%
Weekly holding cost
$2421/wk
10yr CGT (est.)
$837,397
Estimates based on FY2025 NSW rates at median house price. Assumes 80% LVR, 6.5% interest rate, 39% marginal tax rate ($135K-$190K bracket). Individual circumstances vary. This is general information only and not personal financial advice. Consult your CPA before making investment decisions. Local Knowledge Pty Ltd — Registered Tax Agent.
Demographics
1,850
42
$165K
per annum
68.0%
58.0%
52.0%
2.8%
38.0%
Dwelling Mix
Lifestyle & Community
3
8
1
12.0 km
Nearest Station: Artarmon Station
Premium harbourside lifestyle with boating, water sports, tennis, and easy access to harbour walks and parks, complemented by proximity to North Shore amenities and excellent schools.
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Data sourced from multiple sources. Last updated 27 March 2026.