The spectacular mansions of Canada's wealthiest residents boast enormous floorplans, lavish interiors and high-end amenities that few can afford. With owners ranging from a prominent sugar refiner to a multi-millionaire in the timber industry, each property comes with a unique tale behind its creation.
Click or scroll on to step inside the biggest mansions across Canada, complete with dreamy pools, fabulous fixtures and plenty of surprises...
Located in the quiet, picturesque countryside of Lacombe County, Alberta, the Gadsby Lake Estate is as big as it is impressive.
Stretching 21,498 square feet (1,997sqm), the property was constructed in 1981 and sits on an elevated plot that allows every room to capture amazing scenic views of Gadsby Lake and the surrounding countryside.
Described by Sotheby's International Realty Canada as “a secluded paradise offering just about everything you can dream of”, the extensive home boasts 17 bedrooms and 31 bathrooms, as well as a bright atrium, a grand library, a double-height sitting room and a luxe kitchen.
Each space is impeccably designed. Beautiful windows frame spectacular lake views, while gorgeous stone fireplaces, rich wood accents and imposing light fixtures add to the wow-factor.
Not just about the basics, this pad is also a wellness hub and an entertainer's paradise. There's a large indoor pool, a grand party room, a private movie theatre, a games room, a fitness centre, a sauna and a large wine cellar.
Truly, no expense was spared and no amenity overlooked in the construction of this elaborate estate. It isn't just the mansion itself that's huge, either.
The sprawling grounds extend almost 300 acres (121ha) and come complete with hiking trails, spots for fishing and canoeing, and a tennis court. Pathways wind through seemingly endless secluded parkland.
Rolling hills and elaborate landscaping create an oasis unlike any other in Canada. Is it any wonder this estate was for sale in May 2025, with Sotheby's International Realty Canada, for CA$13.9 million (£7.5m/$10m)?
An architectural landmark of Toronto, this unusual, brutalist-inspired mansion lies in one of the city's most sought-after and prestigious neighbourhoods, the Bridle Path.
Described as “exceptional in its construction, engineering, thought, detail, material selection and flow”, the home's concrete walls are embedded with pink and white quartz stones, while its spacecraft-esque façade adds to the drama.
The home was designed by internationally renowned architect John C Parkin (pictured), using his unique take on the mid-century modern movement.
Parkin only designed a few private houses during his career, so this home is not only unique but extremely rare. It was designed for Alfred W. Billes, the son of Canadian Tire co-founder A. J. Billes.
Parkin reportedly had four main aims for the home: to integrate it into the surrounding landscape, with maximum privacy; to ensure light-filled living areas; to incorporate two indoor garages and, finally, to create both opulent rooms and more casual, intimate spaces.
His vision certainly worked. This incredible room, for example, is one of the home's grandest areas and comes with a soaring ceiling, huge structural columns, sleek floors and timber accents.
At the heart of the home is a four-storey solarium, topped by huge skylights. There’s also a black granite bridge that leads to the entrance, a meditation garden, an indoor and outdoor pool, a 1,700-square-foot (158sqm) recreation room, a catering kitchen, eight bedrooms and 12 bathrooms.
Outside, you’ll find more than two acres (0.8ha) of landscaped gardens and terraces. There’s even a putting green. The home was for sale in May 2025, via Sotheby's International Realty Canada, for just below CA$24 million (£13m/$17.3m).
Dating back to 1913, this magnificent 67-room Italian Renaissance Revival mansion is quite unlike any you might have seen before.
Secluded behind towering cedar trees in Montreal’s prestigious Golden Square Mile, the historic estate is enclosed by two acres (0.8ha) of grounds, designed by renowned architect and garden designer Charles A. Platt, who worked with both the Rockefeller and Vanderbilt families during his career.
The mansion itself was the former residence of J.W. McConnell (pictured), a prominent sugar refiner, newspaper publisher, humanitarian and philanthropist.
As soon as you step inside, you’ll be blown away by the sheer scale and craftsmanship of the building. From majestic wrought iron and gold leaf details, to 21-foot (6.4m) coffered ceilings, walnut-panelled walls and marble staircases, every single space is utterly mesmerising.
Amazingly, the property extends approximately 32,005 square feet (2,973sqm), across five floors. There are 67 rooms in total, including 12 bedrooms, eight bathrooms, a 50-foot-long (15m) reception hall, a library, a formal dining room, a high-end kitchen and a sun-drenched solarium.
There’s even a rejuvenating spa, a games room, a wine cellar, dedicated staff quarters and an incredible rooftop terrace.
The immaculate grounds are dotted with sculptures, cascading waterfalls and ponds. There's even an outdoor cinema and an amphitheatre.
Despite its age, the home is high tech and efficient, with state-of-the-art geothermal heating and a brass elevator servicing all levels. It's no wonder this amazing mansion was for sale in May 2025, with Sotheby's International Realty Quebec, for CA$29.5 million (£15.96m/$21.1m).
In September 2018, Chelster Hall became Canada’s most expensive listed home when it hit the market for a cool CA$59 million (£31.8m/$42.2m).
Nestled on the shores of Lake Ontario, in the town of Oakville, the estate sprawls 10 acres (4ha) and, according to sources, the mansion at its heart measures a staggering 47,000 square feet (4,366sqm). However, others suggest it's more like 43,850 square feet (4,074sqm). Either way, it remains one of the largest and most luxurious residences in the country.
Hugo Powell, the CEO of Belgian beer company Interbrew, commissioned the manor. Powell enlisted architect William Hicks to design his dream home; an interpretation of Blickling Hall in England, the ancestral home of the second wife of King Henry VIII, Anne Boleyn.
Hicks originally designed a 54,000-square-foot (5,016sqm) mansion – comparable to the US White House – but was forced to scale it back to meet city regulations. The property was finished in 2006, after five years of hard work.
The height of luxury, the property enjoys 330 feet (8.4m) of Lake Ontario shoreline and comes equipped with everything from two swimming pools (one inside and one out), to a bowling alley, a movie theatre and a 7,000-bottle wine cellar.
Even an 800-square-foot (74sqm) private chapel overlooks the water. You wouldn't know it, but the house is hiding an underground garage, capable of accommodating 12 cars.
As for the interior, it exudes classic appeal, with stunning chandeliers, custom cabinetry, European-inspired fireplaces, decorative ceilings and large windows.
The home was designed to look 100 years old and it really shows. There's a gorgeous circular entrance foyer, a double-height lounge, a colossal kitchen, a two-storey library with a spiral staircase, a formal dining room, six bedrooms and 14 bathrooms. Take the full tour with this YouTube video by SilverHouseHD.
At 65,000 square feet (6,038sqm), this jaw-dropping custom mansion is likely the second-largest home in Canada, although it was never actually finished.
Peter Grant, the multi-millionaire owner of Grant Forest Products Corporation, bought the 43-acre (17.4ha) plot on the shoreline of Lake Temiskaming in Northern Ontario in 2005, reportedly paying CAD$110,000 (£59.2k/$78.7k). He quickly began work on his dream home.
However, construction was halted in 2008. The global economic recession had financially crippled Grant and in 2009, all of his company's assets were seized – including the mansion.
The structure was all but finished, but the interior remained incomplete. It was placed on the market in 2010 for CAD$25 million (£13.5m/$17.9m). The buyers reportedly failed to pay taxes on the building for three years, so local authorities put it back on the market. But, just before the property was sold, the mystery owners paid their debts.
Sadly, they did little to finish the property and, as a result, it was damaged by trespassers and vandals. The interior was littered with construction materials and debris, as seen here in images captured by urban explorer Dave of Freaktography in 2020.
Despite the home's unkept state, it isn't hard to imagine how amazing the place could be, with the right amount of financial investment. The interior boasts vast rooms with floor-to-ceiling windows, statement fireplaces and attractive stone walls.
As well as numerous living rooms, a huge atrium, a designer kitchen and countless bedrooms, the home was also due to have a luxe indoor swimming pool.
Luckily, the abandoned mansion was bought in 2022 by Texas-based entrepreneur Chris Fischer (pictured). He’s planning on renovating the home and will be posting updates on his Facebook page, Mansion Impossible. Watch this space!
Rideau Hall is undeniably one of the most iconic buildings in Canada. For more than 150 years, the sprawling property has been the official residence of every Governor General of Canada.
The stone villa, which forms the main part of Rideau Hall, was built in 1838 by stonemason Thomas MacKay. It contains around 175 rooms and stretches an astonishing 95,000 square feet (8,825sqm).
In May 2025, Rideau Hall was occupied by Mary Simon, a Canadian civil servant, diplomat and former broadcaster, who has been serving as the 30th governor general of Canada since July 2021. Simon is seen to the right of centre.
The stateroom, pictured here, is used for greeting official guests. However, its modest size, warm terracotta walls, mood lighting and plush sofas give the room an intimate feel.
In 1864, the building was leased and expanded by the Canadian government to become the main residence for Lord Monck, Canada’s first governor general. In 1868, the government purchased the house and grounds for just CA$82,000 (£44.1k/$58.6k).
The Tent Room is probably the hall’s most impressive space. It was commissioned in the 1870s by the Earl of Dufferin, Canada’s third governor general. He aimed to create the perfect indoor space for hosting soirées. He took inspiration from English garden parties, which were often held in decorative tents.
After buying the building, the Canadian government redesigned the interior, resulting in a unique blend of styles. From gilded accents to grand chandeliers, fine art collections and antique furniture, there's something beautiful to see in every room.
The ballroom is another stunning space and boasts a one-tonne chandelier, decorated with 12,000 crystals. It was reportedly gifted to Canada by England for its assistance during the Second World War.
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