What is the true cost of buying an apartment in Castle Cove?

The median apartment in Castle Cove is $1,850,000. Including stamp duty ($84,160), strata, council rates, insurance, and mortgage repayments, the true first-year cost is approximately $124,760, or $10,397/month.

What does it really cost to buy a house in Castle Cove?

The median house in Castle Cove is $4,200,000. True first-year cost including stamp duty ($294,000), rates, insurance, maintenance, and mortgage repayments is approximately $280,944.

What is the vacancy rate in Castle Cove?

Castle Cove currently has a vacancy rate of 1.2%. Properties average 35 days on market.

buyer.chat

True Cost of Buying in Castle Cove

2069 NSW · 12km to CBD

Rising

A decision, not just a search · Castle Cove

Does the lower estimated monthly cost make a property the better buy?

Only under the assumptions entered—and cost is not the whole decision. This model compares scenarios, not lender approval, building condition or personal suitability. Replace defaults with current quotes and documents, then test whether the cost remains manageable when circumstances change.

Questions that could change the answer

Which costs are current supplied figures, and which are model defaults?
What happens to your buffer if interest, repairs or vacancy costs rise?
What finance, contract or inspection condition remains unresolved before an offer?

Evidence to obtain—not yet verified here

Current lender terms and approval conditions, not only a borrowing estimate.
Dated levy notices, rates, insurance quotes and maintenance information.
Contract advice, inspection findings and comparable sales evidence.

Other options: Lower the price limit, compare another property or wait for critical checks. A favourable model result is not a recommendation to make an unconditional offer.

Next action: Re-run the existing calculator with documented inputs, then agree your conditions and walk-away point with the relevant professionals.

When to revisit: Revisit when any input, approval condition, price or property finding changes.

General decision guidance—not a property assessment, personal recommendation or verified client result. Dates on surrounding market content apply to that content, not to checks on your property.

Take this question to a review

The question and suggested checks are prefilled for you to edit. No enquiry is sent until you submit and consent.

Market Intelligence

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.

Premium harbourside location with water access and marina facilitiesHighly regarded schools including Castle Cove Public School and selective school proximityExclusive low-density residential character with predominantly detached homesStrong community atmosphere with active tennis and sailing clubsLimited housing stock creating scarcity value and price stability

Market Snapshot

Median House

$4.2M

+8.5% 1yr

Median Apartment

$1.9M

+6.8% 1yr

Median Townhouse

$2.8M

Vacancy Rate

1.2%

35 avg DOM

Yield (Apartment)

3.4%

Yield (House)

2.8%

Auction Clearance

78%

Population

1,850

True Cost Breakdown

Based on median prices · 20% deposit · 6.5% interest · 30-year term · Owner-occupier

Apartment

$10,397/mo

Purchase Price

$1,850,000

Stamp Duty

$84,160

1st Year Total

$124,760

House

$23,412/mo

Purchase Price

$4,200,000

Stamp Duty

$294,000

1st Year Total

$280,944

Townhouse

$15,000/mo

Purchase Price

$2,800,000

Stamp Duty

$136,410

1st Year Total

$179,996

Run Your Own Numbers

These are median figures. Plug in the actual property you're looking at to see your real all-in cost — including first-home concessions, investment deductions, or different deposit amounts.

Open Calculator