728529 21st Side Road, Blue Mountains, ON N0H 1J0
- Property tax
- $18,136 / year
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.
- MLS number
- X13489690
- Type
- Farm
- Status
- Active
- Bedrooms
- 6
- Bathrooms
- 7
- Postal code
- N0H 1J0
- Photos
- 49
- Laundry
- Not in the unit
This listing’s own days on market are shown above. How long the property has been for sale across every earlier listing is drawn from records the board releases only to registered users — a free account opens it, along with the sale history below.
Rooms
16 rooms as the listing brokerage filed them, with measurements.
Main
| Room | Size | Features |
|---|---|---|
| Foyer | 6.07 × 6.56 m | — |
| Kitchen | 7.35 × 7.48 m | — |
| Dining Room | 4.73 × 7.48 m | — |
| Primary Bedroom | 7.67 × 6.56 m | Walk-In Closet(s) · 4 Pc Ensuite |
| Living Room | 6.20 × 8.63 m | — |
| Bedroom | 3.47 × 5.39 m | 3 Pc Ensuite |
| Bedroom | 7.78 × 7.48 m | 3 Pc Ensuite · Balcony |
Second
| Room | Size | Features |
|---|---|---|
| Other | 8.13 × 6.45 m | B/I Bar |
| Media Room | 5.07 × 5.15 m | — |
| Utility Room | 5.28 × 5.67 m | — |
| Laundry | 1.92 × 2.71 m | — |
| Study | 9.45 × 8.69 m | — |
| Exercise Room | 5.11 × 6.07 m | — |
| Bedroom | 2.92 × 2.92 m | — |
| Bedroom | 3.00 × 4.03 m | — |
| Other | 2.53 × 2.32 m | Sauna |
Property details
As filed by the listing brokerage. Anything the board left blank is left out rather than shown as unknown — and none of it is guaranteed accurate by PropTx, so verify what you rely on.
Property
- Type
- Farm
- Style
- 2-Storey
- Class
- Residential Freehold
- Fronting on
- North
- Community
- Blue Mountains
- Municipality
- Blue Mountains
- Cross street
- Sideroad 21 and 6th Line
- Zoning
- A1 H
Inside
- Bedrooms
- 6
- Bedrooms above grade
- 6
- Bathrooms
- 7
- Washrooms
- 1 on the second floor · 1 on the second floor · 2 on the main floor
- Kitchens
- 1
- Rooms above grade
- 13
- Family room
- Yes
- Fireplace
- Yes
- Basement
- None
- Size
- 5000 +
Building
- Construction
- Concrete, Metal/Steel Siding
Parking
- Covered spaces
- 5
- Driveway spaces
- 25
- Total parking
- 30
Land
- Lot
- 1753 × 1951 feet
- Shape
- Rectangular
- Pool
- Above Ground
Heating, cooling and services
- Heat source
- Other
- Water
- Well
- Electricity
- Yes
- Gas
- No
- Cable
- Yes
Features
- 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
Listing
- MLS number
- X13489690
- Status
- New
- Previous status
- Draft
- Listed on
- 2026-06-25
- Expires
- 2027-01-15
- Possession
- 2026-07-15
- Taxes
- $18,136 (2025)
- Board
- One Point Association of REALTORS
Listing history
This address has been listed 3 times.
Where this property is
H-Value
Work out the numbers
Everything below is calculated in your browser from figures you can change. Nothing is sent anywhere.
If you rented it out
How this is calculated, and what it leaves out
Canadian fixed-rate mortgages compound semi-annually, not monthly, so the monthly rate here is (1 + rate/2)1/6 − 1. Most calculators use rate ÷ 12, which is the American convention and overstates the payment by tens of dollars a month.
Below 20% down, default insurance is mandatory and is added to the loan rather than paid at closing: 2.80% at 85% loan-to-value, 3.10% at 90%, 4.00% at 95%. It is unavailable at or above $1.5M, which is why 20% is a hard floor there.
Not included: vacancy, property management, capital repairs, income tax, and the fact that a lender qualifies you at a stress-test rate rather than the one you are quoted. This is arithmetic on the numbers above, not a mortgage approval or an opinion of what you can afford.
