728529 21st Side Road
Blue Mountains, ON
- 6 bed
- 7 bath
- approx. 5000 + sqft
- Farm
- 77 days on market
Majestically positioned upon eighty pristine acres within Clarksburg's most distinguished countryside enclave, this Frank Lloyd Wright-inspired architectural tour de force represents the pinnacle of luxury residential design. Approached through monitored gates and a winding driveway, this extraordinary five-bedroom, seven-bathroom estate exemplifies uncompromising craftsmanship, where the masterful fusion of Corten steel, cedar, and metallic exterior elements creates a striking modern silhouette set against a magnificent natural backdrop, enhanced by dramatic landscape lighting that elevates the estate's grandeur through twilight hours. The palatial interior reveals soaring eighteen-foot ceilings and resplendent marble floors, culminating in an open-concept masterpiece with polished concrete flooring and 12.5 ft. floor-to-ceiling windows framing the serene landscape. The Varenna Poliform kitchen impresses with a 20.5 ft. island, Sub-Zero and Wolf appliances, 11 ft. ceilings, and bespoke walnut cabinetry that flows with architectural harmony throughout. The lavish two-storey primary suite offers polished plaster walls, custom walnut built-ins, a marble ensuite with chronotherapy rain shower, and a private retreat lounge. Additional bedrooms include terraces or balconies, with two guest suites offering luxurious ensuites-one serving as a secondary primary with service bar. Entertainment abounds with a professional theatre, custom gym, and stunning two-storey lounge bar overlooking a 22 ft. infinity pool. A heated five-car garage and radiant flooring ensure year-round comfort. A separate two-storey guest house includes a full kitchen, loft bedroom, and soaring ceilings. A pristine barn provides premium equestrian facilities. Landscaped grounds feature a fire pit, hot tub, and pergola, all enhanced by elegant lighting. With Loree Forest nearby and a Generac generator, this estate blends architectural brilliance with modern sophistication.
Listing Details
- Taxes (2025)
- $18,136
- Listed
- June 25, 2026
Price History
Listing history
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Property
- Style
- 2-Storey
- Construction
- Concrete, Metal/Steel Siding
- Interior
- Accessory Apartment, Air Exchanger, Built-In Oven, Central Vacuum, Generator - Full, In-Law Capability, Guest Accommodations, Intercom, On Demand Water Heater, Primary Bedroom - Main Floor, Sauna
- Lot Size
- 1753 x 1951 Feet
Parking
- Covered Spaces
- 5
- Total Parking
- 30
Utilities
- Heat Source
- Other
Location & Legal
- Cross Street
- Sideroad 21 and 6th Line
- Zoning
- A1 H
- Parcel Number
- 373080189
- Possession
- Flexible
- Occupancy
- Owner
Community
Postal area N0H
- Population
- 53,674
- Private dwellings
- 34,400
- Median age
- 52.8
- Average household size
- 2.3
- Median household income
- $86,000
Source: Statistics Canada, 2021 Census of Population, catalogue 98-401-X2021013. Adapted from Statistics Canada. This does not constitute an endorsement by Statistics Canada of this product.
Local market
Residential Freehold in Blue Mountains · last 12 months
- Median sold price
- $891,000
- Homes sold
- 295
- Median days on market
- 50
- Sale-to-list price
- 94.4%
Based on 295 recorded sales of residential freehold properties in Blue Mountains over the last 12 months.
Rooms
2-piece on Second, 3-piece on Second, 2 × 3-piece on Main, 2 × 2-piece on Main, 4-piece on Main
Second
- Bedroom9'10" x 13'3"
- Bedroom9'7" x 9'7"
- Exercise Room16'9" x 19'11"
- Laundry6'4" x 8'11"
- Media Room16'8" x 16'11"
- Other
- Other8'4" x 7'7"
- Study
- Utility Room17'4" x 18'7"
Main
- Bedroom11'5" x 17'8"
- Bedroom
- Dining Room15'6" x 24'6"
- Foyer19'11" x 21'6"
- Kitchen
- Living Room
- Primary Bedroom
Listed by
RE/MAX Four Seasons Realty Limited
Walk Score
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Location
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Mortgage Calculator
$2,999,000
Estimated Monthly Payment
$73,666
Land transfer tax
Ontario land transfer tax only. An estimate — not legal or financial advice. Municipal land transfer tax applies in Toronto and is not included.
Investment Analysis
No recent nearby lease data. Enter a rent to see the numbers.
Mortgage: $73,666/mo (20% down, 5.5%)
Taxes: $1,511/mo · Insurance: $3,749/mo
Estimates only. Consult a financial advisor.
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