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20 ONSLOW STREET ROSE BAY NSW 2029

HOUSE FOR SALE

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Estimated Valuation

20 ONSLOW STREET ROSE BAY NSW 2029 Property Photo
Bedrooms

4

Bathrooms

3

Car Space

2

Land Size

-

Year Built

-

Property Type

House

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Added 10 hours ago
Listing Price

Auction

Auction
Listed By
TRG

Discover the ultimate Rose Bay lifestyle in this impeccably maintained four-bedroom family home situated on a premium cul-de-sac. Featuring stunning Carrara marble finishes, rich timber floors, and seamless indoor-outdoor entertaining spaces, this turnkey residence offers sophisticated living moments from the village and beach.

Description

Located in a sought-after cul-de-sac within the prestigious suburb of Rose Bay, this four-bedroom residence offers a blend of luxury and family functionality. The property sits on approximately 300sqm of level land with an impressive frontage, positioned just moments from Rose Bay Village, schools, and beaches. The home features stylish contemporary interiors defined by rich timber floorboards, marble surfaces, and travertine finishes that create a warm, understated elegance.

The heart of the home is the gourmet kitchen, which boasts Carrara marble benchtops, premium stainless steel gas appliances, and an integrated Miele dishwasher. A generous breakfast bar anchors the space, seamlessly connecting to open-plan living and dining areas that flow effortlessly through large sliding glass doors to the outdoors. The north-facing rear yard is a standout feature, offering a sun-drenched entertainer's deck with an automated awning and integrated barbecue, alongside a private cabana.

Accommodation includes four generous bedrooms, three on the upper level and one flexible space on the lower level ideal for extended family or office use. The master suite is particularly refined, featuring a boutique-style walk-in wardrobe and a luxurious ensuite with travertine surfaces. A separate living room provides a quiet retreat with custom-built banquette seating. Quality finishes extend to extensive custom joinery, built-in wardrobes in all bedrooms, ducted air conditioning, and an internal laundry with direct access to a side courtyard.

Property Style & Condition

Overall
contemporary
excellent
Condition
Exterior
modern
excellent
Condition
Livingroom
contemporary
excellent
Condition
Bedrooms
contemporary
excellent
Condition
Kitchen
contemporary
excellent
Condition
Bathroom
contemporary
excellent
Condition
Yard
landscaped
excellent
Condition

Key Features

Carrara marble kitchen benchtops
Premium stainless steel gas appliances
Integrated Miele dishwasher
Rich hardwood timber floorboards
Travertine surfaces in bathrooms
Sun-drenched north-facing backyard
Entertainer''s deck with automated awning
Private cabana
Master bedroom with walk-in wardrobe and ensuite
Second bedroom opening to balcony
Separate living/media room with banquette seating
Ducted air conditioning
Wine rack and pantry storage
Automated gate and security alarm
Side courtyard access from laundry

Specifications

Property Details
Property Type House
Stories 2
Parking Type carport
Windows double pane
Gas natural gas
Location & Setting
Setting suburban
Lot Position cul de sac
Beach Proximity within walking distance
Nearby Amenities
Near beach
Near primary school
Near high school
Near shopping
Near supermarket
Near restaurants
Near parks

Exterior

deck
timber deck
patio
covered patio
bbq area
automated awning
cabana
fenced yard
privacy fence
mature landscaping
side access
carport
security gate
intercom

Indoor

open floor plan
hardwood floors
kitchen island
walk in closet
granite countertops
stainless steel appliances
pantry
laundry room
home office
primary suite
ensuite bathroom
soaking tub
dual vanity
rain shower
crown molding
built in shelving
sliding glass doors
recessed lighting
oven
gas range
dishwasher
barbeque
central
central ac
alarm system
gated entry
Listed on 09 Sep 2026

Property Location Map

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    Property     ROSE BAY     LGA

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ROSE BAY Statistics

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Suburb Statistcs:

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Property Price History

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Market Activity (Sales Volume)

Number of homes sold annually.

Education Quality & Safety Index

School Quality (ICSEA) vs Safety Index.

Community Stability

High Owner Occupier % and Family Household %.

Livability Scores

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Crime Breakdown vs State Average

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Local School ICSEA Scores

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Age Distribution Profile

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Household Composition

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Health & Wellbeing Indicators

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Commute & Transport Mix

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Environment & Natural Hazards

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Income vs Cost of Living

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Location Profile

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Local Places & Amenities

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Crime in suburb of Rose Bay NSW

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Population

-

Crimes Committed

-

Crime Rate

- per 1,000

Safety Rank

-/100

Overall Crime

-

5-Year Crime Trend (2020 - 2024)

Crime Composition (2024)

Violent vs Property vs Other

Top 10 Offense Types (2024)

Victimization Probability

Violent Crime Chance 1 in X
Property Crime Chance 1 in X
State Average (Violent) 1 in 84

Schools within the catchment Rose Bay NSW

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Fully updated to reflect the latest Federal Budget provisions, it analyses rental yield, cash flow, and overall Return on Investment (ROI), giving you the clarity to assess whether a property truly aligns with your financial objectives.

The True Cost of Buying this Property

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Buyer Fees Calculator

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Investment Calculator

  Investment Viability Engine · 2026 Tax Rules

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1 The Property

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2 Your Situation

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3 Costs & Assumptions

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Interest on the borrowed deposit is also tax-deductible and is added to your gearing position. Your true out-of-pocket cash is reduced by whatever portion you borrow.
Borrowing capacity & serviceabilityCan you actually get the loan? Lender stress test.
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Ownership structure & income splittingSole, joint (split income), company or trust?
A negatively geared property usually works best held by the higher earner; a positively geared one benefits from being split to the lower earner. This is general information only.
Land tax (NSW)Annual holding cost on combined land value over the threshold.
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NSW 2026: nil up to $1,075,000 combined land value, then $100 + 1.6% of the excess, rising to $88,036 + 2% premium rate above $6,571,000. Computed land tax replaces the figure in section 3.
Cash buffer & risk capacityCould you survive vacancy, rate rises and repairs?
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Calculating…Verdict ?
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Your take-home profit over — yrs ?
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rent cash flow + capital gain − all costs & tax
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net rent + gain after CGT, selling costs & loan payout
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net rent + unrealised equity gain (no sale, no CGT yet)
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Comparing Common Investments ?
What this shows
Property value (grey bars, left axis) is the projected market value each year using your capital-growth assumption. The capital profit if sold line (coral, left axis) is the money you'd actually walk away with that year after repaying the loan, paying selling costs, paying CGT, and getting back the cash you put in. The rent collected line (teal, right axis) is gross annual rent received, grown at your rent-growth assumption.
What this shows
Three views of how the position evolves year by year. Property value (dashed) shows the asset growing at your capital-growth rate. Equity (coral) is value minus loan balance — how much of the property you actually own. Cumulative cash flow (teal) is the running total of all after-tax rent (positive) or top-ups (negative) you've put in since day one.
What this shows
The yearly cash position after every cost and tax effect. Green bars = positive years (the property paid you). Red bars = years you had to top it up from your pocket. This is the most honest picture of what holding the property feels like on a year-to-year basis.
What this shows
Where every dollar of the projected sale price goes. Net to you is what lands in your bank account; the rest is consumed by loan payout, selling costs and capital gains tax. The CGT slice depends on which regime applies (50% discount, indexation + 30% min tax, or a split of the two).

What this shows
How fragile your outcome is to the capital-growth assumption — the single biggest swing factor in any property forecast. Each point on the line re-runs the entire model at a different growth rate. Where the line crosses the dashed zero, that's roughly the growth rate needed just to break even over your hold period.

What this shows
The same upfront cash invested four different ways, held the same number of years. The property includes all rent, costs, tax and the final sale (after CGT and loan payout). The ASX 200 ETF compounds at its assumed total return; the gold line compounds at gold's long-run average; the inflation line is what you need to just preserve your purchasing power. Any year the property bleeds cash, that shortfall is invested in the comparison asset too (so they get the same total dollars over the life of the deal). Gains on the comparison assets are taxed under the same 2026-Budget CGT regime that applies to shares and ETFs — the transitional split (50% discount on the pre-1 Jul 2027 portion, then cost-base indexation + 30% minimum tax on the post-1 Jul 2027 portion), since non-property assets are never grandfathered.
What this shows
The full year-by-year ledger. Cash flow is pre-tax (rent minus all cash costs); tax effect is the value of any deduction or the tax bill on net profit; after-tax is the actual dollars in or out of your account that year. Cumulative is the running total.

About this model

Reflects the 2026 Federal Budget proposals (announced 12 May 2026): from 1 July 2027, negative gearing on established residential property bought after 7:30pm 12 May 2026 can only offset rental income / residential property gains (excess losses carry forward), and the 50% CGT discount is replaced by cost-base indexation plus a 30% minimum tax on the real gain accruing after 1 July 2027. The CGT change applies to all CGT assets (shares, ETFs, gold, crypto), not just property, so the comparison assets are taxed on the same basis. New builds retain full negative gearing and the choice of the 50% discount. Properties contracted on/before 12 May 2026 are grandfathered. The main residence, superannuation funds and widely-held trusts are exempt. These are proposed rules that may change in legislation. Resident tax rates 2025–26 are used (incl. 2% Medicare levy). This is general information, not financial, tax or legal advice — consult a licensed adviser before acting.
Purchase Cost Calculator

The True Cost of Buying this Property

Beyond the sale price, Australian property buyers face stamp duty, legal fees, inspections, loan charges and more. Adjust the purchase price and your state to see the full picture.

Purchase Price
$850,000
AUD
$100K $5M
Property State
Your Situation
Total Additional Costs
On top of the $850,000 purchase price in NSW
Extra Costs
$52,000
All-In Cost
$902,000
% of Price
6.1%
How these figures are calculated

Stamp Duty (Transfer Duty): Calculated using each state's 2024–25 residential transfer duty brackets for owner-occupiers. First home buyer concessions and investor surcharges are applied where selected.

Lenders Mortgage Insurance (LMI): Estimated at approximately 1.5–2.5% of the loan amount, assuming an 85% LVR. Actual LMI depends on your lender, LVR and loan size.

Conveyancing / Legal Fees: Typical range of $1,500–$3,000 covering contract review, searches and settlement. We use a mid-range estimate.

Building & Pest Inspection: Typically $400–$800 combined for a standard residential property.

Loan Application & Mortgage Registration: Includes bank application fees ($300–$600), mortgage registration (state-based, usually $150–$230) and transfer registration fees.

Council & Water Rate Adjustments: Estimated at around 0.1% of the purchase price — the buyer typically reimburses the seller for pre-paid rates.

These estimates are indicative only. Always confirm exact figures with your conveyancer, broker and the relevant state revenue office before committing to a purchase.

Mortgage Calculator

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Buyer Fees Calculator

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— Stamp Duty
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Disclaimer: This calculator provides estimates only based on standard published rates for 2025-26. Actual stamp duty may vary based on individual circumstances, concession eligibility, and contract dates. LMI is a rough estimate only — actual premiums vary by lender, LVR, and loan size. Always verify with your state’s revenue office and seek professional advice before purchasing.

Mortgage Affordability & Borrowing Capacity Calculator

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Calculating…
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Disclaimer: This calculator provides an estimate only and does not constitute a quote or loan approval. Calculations are based on standard APRA guidelines (including a 3.0% interest rate assessment buffer) and 2025–26 Australian resident tax rates. Lenders may apply their own specific Household Expenditure Measure (HEM) rules, risk margins, and varying credit card assessment rates (typically 3.8% of the limit). Rental income is shaded to 80%. Always speak to a licensed mortgage broker or lender for an exact assessment.

Refinance Savings Calculator

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Disclaimer: This calculator provides estimates only. It assumes interest rates remain constant for the life of the loan and does not account for offset accounts or extra repayments. Refinance costs vary by lender and state (typically including a discharge fee, application fee, and government mortgage registration fees). If your loan balance is above 80% of your property's value, you may also be required to pay Lenders Mortgage Insurance (LMI) when refinancing. Always seek professional financial advice.

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