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.
The home
- Type
- 2-storey detached home
- Style
- 2-Storey
- Square footage
- 3000-3500 sq ft
- Bedrooms
- 4
- Bathrooms
- 3
- Kitchens
- 1
- Rooms
- 13
- Basement
- Partially Finished
- Lot size
- 165.4 x 162.7 ft
- Faces
- West
- Approximate age
- 100+ years
Ownership & fees
- Ownership
- Freehold
- Monthly condo fee
- None
- Security
- Alarm System
- Exterior
- Brick, Board & Batten
Heating & cooling
- Heating fuel
- Gas
- Heating type
- Radiant
- Air conditioning
- Window Unit(s)
- Fireplace
- Yes
Garage & parking
- Garage
- Attached
- Garage spaces
- 2
- Driveway spaces
- 6
- Total parking
- 8
- Parking features
- Private Double
Taxes & other
- Property taxes
- $9,307/yr
- Tax year
- 2026
- Occupancy
- Owner
- Possession
- Flexible
- Cross street
- Tweed
- Neighbourhood
- Cobourg
More
- Price per sq ft
- ~$577 (at 3,250 sq ft)
- MLS® number
- X13415040
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The home and its surroundings
- Auto Garage Door Remote
- Bar Fridge
- Carpet Free
- On Demand Water Heater
- Beach
- Golf
- Hospital
- Marina
- Park
- School
- Landscaped
- Privacy
- Porch
- Mortgage
- Property tax
- Maintenance fee
Cash needed to close
Estimates only, using Canadian semi-annual compounding, Ontario land transfer tax. Mortgage default insurance is added when you put down less than 20%. Your lender and lawyer will confirm exact numbers.
Schools nearby
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Your commute
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Listing history for 181 Ontario Street
See what this home and others at the same address were listed for, what they sold for, and how long it took.
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Frequently asked questions about 181 Ontario Street
Answers come straight from this home’s MLS® listing.
How much is 181 Ontario Street listed for, and what would it cost each month?
181 Ontario Street is listed for $1,875,000. With 20% down ($375,000), the mortgage payment would be roughly $7,563 a month at 4.5% over 30 years. Add property tax and the estimate comes to about $8,339 a month, all in. That figure is an illustration, not a quote.
Is 181 Ontario Street freehold or a condo, and is there a monthly fee?
181 Ontario Street is a 2-storey detached home in Cobourg. Ownership is freehold: you own the home and the lot. There is no monthly condo fee, so the roof, windows, driveway, snow and lawn are yours to look after.
How many bedrooms and bathrooms does 181 Ontario Street have?
181 Ontario Street has 4 bedrooms and 3 bathrooms.
Does 181 Ontario Street have a garage and parking?
Yes. The listing shows the garage as attached, with room for 2 cars. The driveway adds 6 spaces. In total the listing counts 8 parking spaces.
Does 181 Ontario Street have a finished basement?
The listing describes the basement as partially finished. Finished basement space is usually not counted in the square footage shown.
What style of home is 181 Ontario Street?
181 Ontario Street is a 2-storey detached home. A 2-storey detached house has its living space on the main floor and the bedrooms upstairs, on its own lot with no shared walls.
How big is 181 Ontario Street, and what is the lot size?
The listing puts the home between 3,000 and 3,500 sq ft. The board reports a range rather than an exact figure, and it usually leaves out the basement. The lot is listed as 165.4 x 162.7 ft.
How is 181 Ontario Street heated and cooled?
Heating is radiant (gas). Cooling is window unit(s).
What are the property taxes for 181 Ontario Street?
Property taxes are $9,307 a year (2026), or about $776 a month.
Where is 181 Ontario Street?
181 Ontario Street is in Cobourg. The nearest main intersection is Tweed. The postal code is K9A 3B6.
Is 181 Ontario Street still for sale?
Yes. It is an active listing (MLS® X13415040). Listings here update from the board through the day and come down once a home sells.
What are similar detached homes near 181 Ontario Street asking?
Similar detached homes for sale nearby right now include 138 Bagot Street at $1,599,900 (4 bed), 3 Hamilton Court at $1,350,000 (4+1 bed) and 40 Tremaine Terrace at $1,350,000 (4 bed). These are asking prices, not sold prices. The Sold history tab shows what homes at this address went for.
What have homes at 181 Ontario Street sold for?
Recent sales, leases and expired listings for this home and others at the same address are in the Sold history tab, with the price and date of each. It is free for members.
How do I book a showing at 181 Ontario Street?
Pick a day and time with Book a Tour on this page. Tours are free, with no obligation, in person or by video. You can also call or text 647-931-3923.
Have a different question? Ask about this home and get an answer, usually within the hour.
Similar detached homes nearby
More detached homes for sale near Cobourg, picked by style, size and price.
2-storey detached home$1,599,900138 Bagot Street, Cobourg4 bed · 4 bath · CobourgCourtesy of: Homesmiths Real Estate Ltd.View home →
2-storey detached home$1,350,0003 Hamilton Court, Cobourg4+1 bed · 4 bath · CobourgCourtesy of: RE/MAX HALLMARK FIRST GROUP REALTY LTD.View home →
2-storey detached home$1,350,00040 Tremaine Terrace, Cobourg4 bed · 4 bath · CobourgCourtesy of: Royal LePage Frank Real EstateView home →Courtesy of: RE/MAX Rouge River Realty Ltd.
Listing information comes from the Toronto Regional Real Estate Board through PropTx and is deemed reliable but is not guaranteed accurate. It is provided for consumers' personal, non-commercial use. The trademarks MLS®, Multiple Listing Service® and the associated logos are owned by The Canadian Real Estate Association (CREA) and identify the quality of services provided by real estate professionals who are members of CREA.
*Estimated monthly cost assumes 20% down, a 4.5% rate and a 30-year amortization, plus property tax. For illustration only.