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$7,990,000

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4235 17th Sideroad

Rural King, King, Ontario L7B1K4

For sale· Added

6+4 bed14 bath5,000–100,000 sqft

About this home

Welcome to an extraordinary estate on 32 acres of majestic land, tucked away behind welcoming stone pillars and a winding forested driveway! This is a work of art designed by the legendary Grant Whatmough and Gardiner Cowan, with distinctive Frank Lloyd Wright style of Architecture. This iconic Mid-Century Modern residence is gracefully integrated where nature and architecture exist in perfect harmony. From the moment you approach the stunning entry door, you're drawn into a world of timeless design and serene beauty. With over $2 million in recent renovations across the main home and accessory buildings, this exceptional estate beautifully preserves its original character and soul. Floor-to-ceiling windows seamlessly bring the outdoors in, while stunning stone fireplaces both inside and out, original stone walls, and impressive wood beams throughout create a timeless and refined atmosphere. Spanning approximately 5,000 sq ft, the main residence features 6 bedrooms, 7 bathrooms, an office, a meditation room, and a separate nanny suite. Multiple terraces and decks surround the home, offering breathtaking views of the land, and a tranquil lake creating the feel of a private luxury retreat. This property features a rare second home- fully renovated and approximately 3,500 sq ft-offering 3 bedrooms, 4 bathrooms, and a massive loft space! This second home is ideal for an extended family! There is an additional Yoga studio with an outdoor shower! a Detached garage/ workshop, a charming cedar Cabin with Sauna and Cold plunge, a Covered cabana for entertaining or relaxing on the property. This is a once-in-a-lifetime opportunity to own an architecturally significant estate in the prestigious King Township. With unmatched privacy, lush surroundings, and two beautifully appointed homes, this property is truly a timeless work of art. Don't Miss it!

Location

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Property details

Listing

MLS® number
N12837050
Added
Mar 2, 2026 ()
Updated
Oct 9, 2026 ()
Info refreshed

Overview

Property type
Single Family
Building type
Detached
Ownership
Freehold

Inside

Bedrooms
6+4
Bathrooms
14
Half baths
5
Heating
Forced air, Propane
Cooling
Central air conditioning
Fireplace
Yes · Woodstove
Flooring
Hardwood
Appliances
Water softener
Features
Cul-de-sac, Wooded area, Irregular lot size, Ravine, Rolling, Conservation/green belt, Gazebo, Guest Suite, In-Law Suite, Sauna

Building

Basement
Finished, Walk out
Exterior
Wood, Stone
Foundation
Concrete
Parking
Attached Garage, Garage · 12 spaces
Amenities
Separate Heating Controls, Fireplace(s)
Security
Alarm system

Land

Lot size
1079.6 x 1961.7 ft
View
Lake view, View of water
Zoning
RU1, ORF, ORL

Services

Sewer
Septic System

Location

Cross streets
Western Rd and 17th Sideroead
Directions
17th Sideroad.

Running costs

Annual property tax
$24,541

Rooms

Living roomUpper Level9.55 x 6.96 m
Bedroom 5Main level3.58 x 3.45 m
BedroomLower level3.47 x 3.43 m
Living roomMain level6.8 x 5.8 m
KitchenMain level7.02 x 7.01 m
BedroomLower level4.3 x 3.9 m
BedroomLower level4.25 x 3.4 m
Dining roomUpper Level9.55 x 6.96 m
BedroomLower level3.47 x 3.2 m
KitchenUpper Level6.4 x 4.88 m
Family roomUpper Level7.37 x 4.7 m
Primary BedroomLower level7.09 x 4.93 m
Sitting roomLower level5.13 x 4.7 m
OfficeMain level4.34 x 2.67 m
Bedroom 2Upper Level4.98 x 3.61 m
Bedroom 3Upper Level4.98 x 3.61 m
Bedroom 4Main level4.98 x 3.43 m

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$7,990,000
4235 17th Sideroad
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