For SaleDetached

$4,498,000

584 Fourth Line, Oakville, ON

1020 - WO West, Oakville, ON L6L 5A7

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Bedrooms
6
5 above grade, 1 below.
Bathrooms
7
Full and half bathrooms as the listing totals them.
Interior area
The listing does not state an interior floor area. Lot size, where it is given, measures the land instead.
Property type
Detached
Style as listed: 2 1/2 Storey.
Second dwelling
The listing does not say whether there is a second dwelling unit here. Other records in this set state it either way, so this is a silence rather than a no.

Counts and measurements as the listing states them, not verified by us. Source: MLS

How this price compares

Three parties produce a dollar figure for this house, for three different purposes, so they do not agree and were never meant to. The gaps are worked out here rather than left for you to hold in your head.

Asking price
$4,498,000
Set by the seller and their brokerage. It is a request, and nothing tests it until an offer arrives.
Source: MLS
Our estimate
Our estimate: Not shown: our current listing agreement does not licence this figure for display.
Modelled from comparable sales by the explorer further down this page. Change the comparables there and this number moves, which is the reason it is shown at all.
Modelled from comparable sales, not an appraisal
Assessed value, 2026
Nothing of this kind on the record, and nothing here fills it in from an average of other houses.
The figure property tax is apportioned from, valued as of a date that is not today. It is not a market value and no lender treats it as one.
Municipal assessment and tax roll

Price per square foot

N/A

No floor area on the record, so this cannot be worked out

Days on market

N/A

no area average shown: our current listing agreement does not licence market statistics

None of these is an appraisal. Your lender orders one of those once an offer is accepted, and it is the figure that decides how much they will actually lend.

More about this property

About this property

Set on a deep pool-sized lot in prestigious South Oakville, this custom-built estate offers over 8,500 SF of meticulously finished living space. A dramatic slab feature wall & oversized entry door make a striking first impression, introducing soaring ceilings, wide-plank oak flooring, architectural detailing & expansive windows that seamlessly connect indoor & outdoor living. The designer kitchen is a chef's dream, featuring state-of-the-art B/I appliances, an oversized island, quartz & natural wood surfaces, custom cabinetry, a full prep pantry, dedicated servery, & accordion windows that open directly to the backyard for effortless entertaining. Sun-filled principal rooms flow into a stunning family room anchored by a statement fireplace wall & a W/O to a covered rear portico, which includes its own fireplace, lounge, & dining areas overlooking the pool-ready backyard. A spectacular 22-ft office/library creates the ideal work-from-home setting. Upstairs, the luxurious primary retreat offers a fireplace, custom walk-in closet & spa-inspired ensuite w/ heated floors & a freestanding tub. Generous secondary bedrooms feature ensuite/semi-ensuite access, while the third-floor loft serves as a versatile guest retreat, executive lounge, studio, or additional bedroom w/ a wet bar, W/I closet & private ensuite. Recently completed, the lower level delivers a true lifestyle experience w/ multiple entertainment lounges, a designer wet bar/kitchenette w/ W/O access, a theatre/games room, sauna, wine cellar, guest suite, heated floors throughout & a spa-inspired bath w/ a double rainfall shower. Modern luxury meets everyday comfort w/ a newly installed elevator services all levels, multiple fireplaces, B/I speakers, smart home systems, EV charging rough-in, pet washing station, landscaped grounds & walkouts to multiple private decks. Ideally located near top-rated schools, boutique shopping, private clubs, Lake Ontario, Bronte Harbour & convenient access to the QEW & Hwy 403.

Written by the listing brokerage to sell the house. Nothing in it is verified, so take its claims about condition to an inspection, not from it.

Nest 360 estimate

Our estimate for this listing is not shown here

Not shown: our current listing agreement does not licence this figure for display.

The estimate is built by weighing recent comparable sales, and sold comparables for a specific property are licensed to registered users only. It is withheld rather than approximated: an estimate with the sales taken out of it would be a number with nothing behind it.

Price and listing history

This listing's price and status history is not shown here

Not shown: our current listing agreement does not licence this figure for display.

Prior asking prices, terminations and relists are licensed to registered users only, and there are no accounts on Nest 360 yet. Nothing here should be read as evidence that the current price is the only price this house has been offered at.

Property details

Type: Detached
Style: 2 1/2 Storey
Bedrooms: 6 (+1 lower)
Bathrooms: 7
Kitchens: 1
Total rooms: 12
Lot size: 60 by 273 ft
Year built: 6-15
Status: For Sale
Occupancy: Owner occupied

Features

The pills are copied from the listing and sorted for reading, with nothing added to them, and a group the listing did not fill in is absent rather than empty. Where a group is written as sentences instead, those are ours: what the listing named, and what it means.

Outside

Deck
Landscaped
Lawn Sprinkler System
Lighting
Porch
None pool

Interior finishes

Auto Garage Door Remote

Also listed

On the record, and not one of the groups above.

Sauna
Guest Accommodations
Carpet Free
In-Law Capability

Interior and systems

Heating: Forced Air · Gas
Cooling: Central Air
Basement: Finished, Full
Construction: Stone, Wood
Roof: Asphalt Shingle
Foundation: Poured Concrete
Sewer: Sewer

Parking and exterior

Garage spaces: 2
Driveway spaces: 8
Total parking: 10
Pool: None
Exterior features: Deck, Landscaped, Lawn Sprinkler System, Lighting, Porch

Taxes and assessment

Assessment year: 2026
Annual property tax: $22,557
Tax year: 2026

Property tax by year

Location and neighbourhood

Market trend

Neighbourhood market statistics is not shown here

Not shown: our current listing agreement does not licence this figure for display.

Medians, sale-to-list ratios and absorption are computed from sold prices, and they are licensed to registered users only. There is no approximate version of a median that would be honest to show in their place.

What you would actually pay

$21,421/mo

All-in: mortgage, tax, heat and utilities

Down payment20% · $899,600

20% is the legal minimum on this price.

Amortization

Mortgage$19,380

Property tax$1,880

Heat and utilities (est.)$162

20% down · 4.23% indicative 5-yr fixed · . ; heat and utilities estimated. Figures illustrative.

Compare lenders and private options

See it in person

It asks one question first: whether someone is already acting for you. That answer changes who books the visit and who is on your side inside the house.

Listed by

Contact details for the listing agent are not shown: our current listing agreement licences them to registered users only.

Sourced from: Toronto Regional Real Estate Board, via PropTx RESO Web API. Last updated Jun 20, 2026.

584 Fourth Line, Oakville, ON

How this price compares

More about this property

About this property

Nest 360 estimate

Price and listing history

Property details