What is the true cost of buying an apartment in Castlecrag?

The median apartment in Castlecrag is $1,250,000. Including stamp duty ($51,160), strata, council rates, insurance, and mortgage repayments, the true first-year cost is approximately $88,352, or $7,363/month.

What does it really cost to buy a house in Castlecrag?

The median house in Castlecrag is $3,850,000. True first-year cost including stamp duty ($269,500), rates, insurance, maintenance, and mortgage repayments is approximately $257,966.

What is the vacancy rate in Castlecrag?

Castlecrag currently has a vacancy rate of 1.2%. Properties average 28 days on market.

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True Cost of Buying in Castlecrag

2068 NSW · 8km to CBD

Rising

A decision, not just a search · Castlecrag

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.

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Market Intelligence

Castlecrag is one of Sydney's most prestigious and unique suburbs, located on the Lower North Shore and renowned for its heritage-listed Walter Burley Griffin architecture. This affluent enclave features predominantly detached houses with distinctive architectural elements, many dating from Griffin's garden city vision in the 1920s. The suburb attracts high-income professionals and families drawn to its heritage character, excellent schools, and premium location just 8km from Sydney CBD. With strict heritage overlays protecting its unique character, Castlecrag offers limited housing stock, contributing to strong property values and capital growth. The community is highly educated and environmentally conscious, with strong preservation groups maintaining the suburb's garden city principles. Residents enjoy excellent amenities including Castlecrag Marina, multiple parks and reserves, and quality local schools, while benefiting from proximity to Chatswood's major retail and transport hub.

Heritage-listed Walter Burley Griffin architecture creating unique characterPremium Lower North Shore location with strong capital growthExcellent schools including highly regarded Castlecrag Public SchoolStrong community focus on heritage preservation and environmental valuesLimited housing stock due to heritage restrictions maintaining exclusivity

Market Snapshot

Median House

$3.9M

+8.2% 1yr

Median Apartment

$1.3M

+6.8% 1yr

Median Townhouse

—

Vacancy Rate

1.2%

28 avg DOM

Yield (Apartment)

4.2%

Yield (House)

2.8%

Auction Clearance

78%

Population

3,200

True Cost Breakdown

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

Apartment

$7,363/mo

Purchase Price

$1,250,000

Stamp Duty

$51,160

1st Year Total

$88,352

House

$21,497/mo

Purchase Price

$3,850,000

Stamp Duty

$269,500

1st Year Total

$257,966

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.

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