181 Ontario Street

Cobourg, Ontario K9A 3B6

Overview

At a glance

Days on market142 days
ListedJun 8, 2026
UpdatedOct 28, 2026
Building age100+ years
Size3000-3500 sq ft
Lot165.4 x 162.66 Feet
Property taxes$9,307 (2026)
Parking8 spaces
BasementPartially Finished
MLS® numberX13415040
Data sourcePropTx MLS® System
Listing brokerageRE/MAX Rouge River Realty Ltd.

About this home

Welcome to 181 Ontario Street, The Sonning House, one of Cobourg's most prominent historic estates. Originally constructed in 1840 by the Burnet Brothers-the legendary builders behind Victoria Hall, during Cobourg's prosperous pre-Confederation boom. Today, this stunning Georgian Revival stands as a pristine landmark of the era, beautifully restored and seamlessly upgraded with modern efficiencies. This home exudes the grandeur of the bygone era, complemented by a glamorous, and stylish aesthetic. You're captivated the moment you step into the stunning central hall plan, with a grand staircase and soaring 10.5-foot main-floor ceilings adorned with intricate plaster crown molding. Generous, light-filled principal rooms flow effortlessly with opulent details. The sumptuous dining room will host the celebrations and elegant dinner parties, inviting you to linger. The heart of the home is a striking, modern kitchen complete with custom cabinetry and an oversized stone island designed for effortless entertaining. Contemporary conveniences include a main-floor laundry room and a mudroom with direct access to a rare 2-car attached garage. Upstairs, the grandeur continues with remarkable 11.5-foot ceilings and four spacious bedrooms. Oversized windows provide generous views and abundant natural light. The elegant primary suite features a walk-in closet and a luxurious ensuite. Positioned on a gracious, oversized corner lot, this property offers unmatched outdoor living space in the heart of town, adorned with magnificent, mature trees and perennial gardens. Expansive decking and an elegant pergola provide the perfect space for dining al fresco, entertaining, or quiet gatherings. The generous south lawn features a charming cottage for garden storage and a beautiful fieldstone fire pit, perfect for cool evening gatherings. Located just steps from Lake Ontario and the West Beach boardwalk, The Sonning House is the perfect blend of historic romance and modern luxury.

Details

Property

Style
2-Storey
Building age
100+
Fronting on
West
Cross street
Tweed
Community
Cobourg
Municipality
Cobourg

Inside

Bedrooms above grade
4
Bathrooms
3
Kitchens
1
Basement
Partially Finished
Family room
Yes
Fireplace
Other
Interior features
Auto Garage Door Remote, Bar Fridge, Carpet Free, On Demand Water Heater

Utilities

Heating
Radiant
Heating fuel
Gas
Cooling
Window Unit(s)
Sewer
Sewer
Electricity
Yes
Cable
Yes

Building

Construction
Brick, Board & Batten
Foundation
Stone
Roof
Asphalt Shingle
Exterior features
Landscaped, Privacy, Porch
Pool
None

Parking

Garage
Attached
Parking spaces
6
Total parking
8
Driveway
Private Double

Land

Frontage
165.4
Depth
162.66
Lot size units
Feet
Waterfront
No
Property features
Beach, Golf, Hospital, Marina, Park, School
Rooms (13)
RoomLevelSizeFeatures
Living RoomMain6.24 x 4.91
KitchenMain4.91 x 4.29
Dining RoomMain5.24 x 4.78
Family RoomMain5.2 x 4.79
FoyerMain10.54 x 2.43
BathroomMain2.5 x 2.113 Pc Bath
Mud RoomMain2.5 x 2.5
Primary BedroomSecond6.29 x 4.91
BathroomSecond2.95 x 2.94 Pc Ensuite
Bedroom 2Second5.38 x 4.79
Bedroom 3Second4.78 x 4.2
Bedroom 4Second4.91 x 4.44
BathroomSecond2.9 x 2.433 Pc Bath
Value

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History

Listing history

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Neighbourhood

Around Cobourg

What’s nearby

On a busier streetBackyard faces south

  • Elementary schoolSt. Michael Catholic Elementary Schoolabout 12 min walk
  • High schoolCobourg Collegiate Instituteabout 27 min walk
  • ParkPeace Parkabout 3 min walk
  • PlaygroundPeace Park Playgroundabout 4 min walk
  • TrailRobert’s Rowabout 7 min walk
  • River or lakeCobourg Brookabout 4 min walk
  • Grocery storeThe Market & Smørabout 14 min walk
  • DowntownCobourgabout 9 min walk
  • LibraryCobourg Public Libraryabout 1 min walk
  • Rec centre or arenaPad 1 Arenaabout 10 min walk
  • Golf courseCobourg Creek Golf Courseabout 34 min walk
  • HospitalNorthumberland Hills Hospitalabout 2.9 km
  • Highway on-rampExit 472about 2.8 km
  • GO or train stationCobourgabout 17 min walk

Approximate: straight-line distances, and the backyard and street worked out from the map pin and map data © OpenStreetMap contributors. Check school boundaries with the school board.

On the map

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Community

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Costs

What it would cost

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An example rate. Use the one your lender quotes.
Every monthEstimate
Mortgage payment$0
Property tax$0
Monthly total$0
At closing
Ontario land transfer tax$0

Estimates only, not financial advice. Uses Canadian semi-annual compounding, the minimum down payment and mortgage insurance rules, and Ontario’s land transfer tax brackets. Your lender and lawyer confirm the real numbers. Legal fees, title insurance and moving costs aren’t included.

Listing courtesy of RE/MAX Rouge River Realty Ltd.. Listing information from the PropTx MLS® System. Each listing shows the brokerage that represents it. The information provided herein must only be used by consumers that have a bona fide interest in the purchase, sale, or lease of real estate and may not be used for any commercial purpose or any other purpose. Information is deemed reliable but is not guaranteed accurate by PropTx. Last updated October 28, 2026 at 2:53 p.m.

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