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.
Key Facts:
Tax:
$22,557 / 2026
Property Type:
Detached
Building Age:
6-15 years
Sq. ft. size
5000 + sq. ft.
Lot Size:
60 x 272.6 feet
Lot Irregularities:
PT LTS 52 & 53, PL 350 , AS IN TW32350 ; OAKVILLE
Parking:
Built-In garage (2), 10 spaces in total
Basement:
Finished, Full
Listing #:
W13800104
Days on Site:
48 days
Status Change:
47 days ago
Added to CiRealty:
2026-09-17
Updated on:
2026-09-17
Market Demand:
Buyer’s Market
Balanced
Seller’s Market
Property Details
Property details for 584 Fourth Line, Oakville. Listed for $4,498,000 on 2026-09-17
Property
Property Type:
Detached
Style:
2 1/2 Storey
Community:
West
Municipality:
1020
Inside
Bedrooms:
5 + 1
Bathrooms:
7
Bathrooms Detail:
1 × 2pc
Bathrooms Detail:
3 × 3pc
Bathrooms Detail:
1 × 4pc
Bathrooms Detail:
2 × 5pc
Kitchens:
1
Rooms:
12 + 4
Family Room:
Yes
Den:
Yes
Fireplace:
Yes
Central Vac:
No
Utilities
Water:
Municipal
Cooling:
Central Air
Heating Type:
Forced Air
Building
Size:
5000 + sq. ft.
Building Age:
6-15 years
Construction:
Stone, Wood
Parking
Garage Type:
Built-In
Garage Spaces:
2
Driveway:
Private
Driveway Spaces:
8
Total Parking Spaces:
10
Land
Sewer:
Sewers
Frontage:
60 feet
Depth:
272.6 feet
Cross Street:
S Service Rd & Fourth Line
Property
Property Type:
Detached
Style:
2 1/2 Storey
Community:
West
Municipality:
1020
Building
Size:
5000 + sq. ft.
Building Age:
6-15 years
Construction:
Stone, Wood
Parking
Garage Type:
Built-In
Garage Spaces:
2
Driveway:
Private
Driveway Spaces:
8
Total Parking Spaces:
10
Inside
Bedrooms:
5 + 1
Bathrooms:
7
Bathrooms Detail:
1 × 2pc
Bathrooms Detail:
3 × 3pc
Bathrooms Detail:
1 × 4pc
Bathrooms Detail:
2 × 5pc
Kitchens:
1
Rooms:
12 + 4
Family Room:
Yes
Den:
Yes
Fireplace:
Yes
Central Vac:
No
Land
Sewer:
Sewers
Frontage:
60 feet
Depth:
272.6 feet
Cross Street:
S Service Rd & Fourth Line
Utilities
Water:
Municipal
Cooling:
Central Air
Heating Type:
Forced Air
Rooms
Room details for 584 Fourth Line, Oakville. (Listed for $4,498,000 on 2026-09-17)
Living (20'8" x 16'0")
Pot Lights, W/O To Deck, hardwood floor
Dining (20'7" x 16'0")
Pot Lights, Built-In Speakers, hardwood floor
Family (25'4" x 19'9")
Fireplace, W/O To Deck, O/Looks Backyard
Kitchen (13'0" x 25'10")
Pantry, Centre Island, B/I Appliances
Breakfast (11'7" x 20'5")
Pot Lights, W/O To Deck, hardwood floor
Office (17'5" x 17'4")
Fireplace, B/I Shelves, Vaulted Ceiling
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