109 Mount Pleasant Road

Castleton, Cramahe, K0K 1M0

$1,479,000

3 bedrooms
3 bathrooms
5 parking
3500-5000 sq ft

Listed 25 days ago · MLS® X13827104

About this home

A landmark in Canadian sustainable architecture, this internationally recognized Aerecura rammed earth residence is an extraordinary piece of Ontario's architectural history. Designed by acclaimed architect Terrell Wong and built by Sylvia Cook, founder of Aerecura Sustainable Builders, this pioneering home introduced insulated rammed earth construction to Ontario, demonstrating how exceptional design, environmental responsibility and modern comfort can coexist beautifully. Nestled into 11 acres of rolling meadow and natural forest near Castleton, this 3 bed 2.5 bath residence is thoughtfully positioned to embrace its natural surroundings. Locally sourced earth, compacted layer by layer into insulated walls, creates rich texture and quiet comfort. Designed to use a fraction of typical heating energy, its passive solar orientation and expansive windows fill the soaring central living space with natural light while framing spectacular views of the surrounding landscape. Inside, natural materials, warm wood and extraordinary architectural details create an atmosphere unlike any other. A dramatic suspended library overlooks the main living space, while the bright, minimalist kitchen allows the architecture to take centre stage. The main floor features a private primary suite, dedicated office and beautiful living spaces that extend onto a new deck overlooking the property. The lower level offers two additional bedrooms, a music room, flexible family space and generous storage. Outside, walking trails meander through meadow and woodland, complemented by a detached double garage. Featured in The Globe and Mail, Fine Home building and numerous architectural publications, this remarkable residence has inspired architects, builders and homeowners for more than a decade. More than an exceptional country home, this is a rare opportunity to own an enduring example of Canadian sustainable architecture, where thoughtful design, craftsmanship and nature exist in perfect harmony.

Details

Type: Detached
Style: 2 1/2 Storey
Age: 6-15 years
Size: 3500-5000 sq ft
Lot: 165.78 × 1056 ft
Basement: Finished with Walk-Out, Full
Garage: Detached
Kitchens: 1
Property tax: $6,399 (2025)
Neighbourhood: Castleton
Municipality: Cramahe
Price per sq ft: ~$348 (20% below detached houses in Cramahe, $435)

Interior

Bedrooms: 3 above ground
Bathrooms: 1 × 2-piece (main), 1 × 4-piece (main), 1 × 4-piece (lower)
Rooms: 12 above ground
Family room or den: Yes
Fireplace: No
Features: In-Law Capability, Primary Bedroom - Main Floor, Storage, Water Heater Owned, Water Treatment

Heating, cooling and services

Water and sewer: Septic

Building and exterior

Style: 2 1/2 Storey
Roof: Metal
Age: 6-15 years
Faces: South
Outdoor: Deck, Privacy

Parking

Garage spaces: 1
Total parking: 5
Driveway and parking: Private

Lot

Size: 165.78 × 1056 ft (irregular)
Acreage: 10-24.99

Possession: Flexible
Nearby: Rec./Commun.Centre, School, School Bus Route, Hospital, Library
Cross street: County Road 22 and Mount Pleasant Road

Rooms

Room	Level	Size	Features
Living Room	Main	10.49 × 6.28 m (34'5" × 20'7")
Loft	Second	10.25 × 2.09 m (33'8" × 6'10")
Kitchen	Main	7.08 × 4.37 m (23'3" × 14'4")
Den	Main	2.99 × 3.97 m (9'10" × 13')
Powder Room	Main	2.12 × 1.41 m (6'11" × 4'8")	2 Pc Bath
Primary Bedroom	Main	4.29 × 3.95 m (14'1" × 13')	Walk-In Closet(s), 4 Pc Ensuite
Bathroom	Main	2.97 × 3.96 m (9'9" × 13')	4 Pc Ensuite
Loft	Second	6.44 × 3.94 m (21'2" × 12'11")
Recreation	Lower	7.75 × 6.32 m (25'5" × 20'9")
Media Room	Lower	5.43 × 3.94 m (17'10" × 12'11")
Bedroom	Lower	4.47 × 3.94 m (14'8" × 12'11")
Bedroom	Lower	4.87 × 3.93 m (16' × 12'11")
Bathroom	Lower	2.29 × 2.41 m (7'6" × 7'11")
Utility Room	Lower	2.72 × 3.93 m (8'11" × 12'11")

Location

Location is approximate. See nearby homes on the map

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The neighbourhood

Getting around Car-dependent

No subway, LRT or GO station within a short trip.

Within a 10-minute walk: no grocery stores, 0 cafés and restaurants, 0 parks.

Schools nearby

Elementary

Northumberland Hills Public School
EQAO: Gr 6 reading 89%, math 30%10 min walk

EQAO: share of students meeting the provincial standard (2024–25). Ontario average: Gr 6 reading 86%, math 51%; Gr 9 math 55%; literacy test 83%.

Closest schools, not school zones. Check which school serves this address with the school board before relying on it.

Who lives here postal area K0K

Owners / renters: 86% / 14%
Median household income: $83,000
Average age: 47
Children under 15: 14%
Homes: 90% detached, 0% high-rise
Commute by transit: 0%
Population: 115,850

Languages spoken most at home besides English: German 0.2%, Spanish 0.1%, Mandarin 0.1%, Korean 0.1%.

Safety

Crime Severity Index for Northumberland (Cramahe) (OPP): 27 vs 57 for Ontario (2025).

Police-reported figures for the whole police service area, not this street. Rates use the area’s resident population.

Distances are approximate. Places © OpenStreetMap contributors. Neighbourhood figures: Statistics Canada, 2021 Census. School results: EQAO via Ontario Data Catalogue (Open Government Licence – Ontario). Crime Severity Index: Statistics Canada.

Living here

Commute

Noise Nothing major nearby

No highway within 500 m, rail line within 300 m, or airport flight path nearby.

Distances from the map, not noise measurements. Visit at rush hour to judge for yourself.

Internet High-speed

50/10 Mbps or faster available here by cable, fibre or DSL (the federal high-speed target).

From the federal broadband map. Check exact speeds and providers for the address.

Roads, rail, airports and planned stations © OpenStreetMap contributors. Internet: Innovation, Science and Economic Development Canada, National Broadband Data.

Listed by Chestnut Park Real Estate Limited.

Listing information provided by PropTx Innovations Inc. and TRREB; deemed reliable but not guaranteed accurate by PropTx.