10258 Highway 9 presents a rare opportunity to own an extraordinary 91-acre corner estate in Ontario's highly desirable rural landscape, bordering Caledon with the Humber River flowing through the property. With prime frontage on Highway 9, this exceptional property offer sun matched visibility, accessibility, and future potential. This fully renovated century home features 3+1 bedrooms and showcases timeless charm blended with modern luxury. Enjoy the private pool and spa retreat, dedicated BBQ building, and breathtaking south-east views stretching toward the Toronto skyline. Rolling paddocks and open countryside create a truly picturesque setting. Equestrian and agricultural enthusiasts will appreciate the impressive infrastructure, including 12paddocks, approximately 30 acres of productive hay fields, a 50' x 140' indoor arena, 150' x 140'outdoor sand ring, standalone 12-stall barn with additional stalls, and a 50' x 40' heated and insulated building currently operating as a country artisan store. With worked acreage, a bunkie, strong road exposure, and location on a regional road for easy commuting in both directions, this property is ideally positioned for a variety of uses - private estate living, equestrian operations, agricultural pursuits, or a high-visibility business venture. A rare blend of lifestyle, income potential, and long-term investment value - properties of this caliber and location seldom come to market. Act fast.
4 bedrooms, 2 bathrooms, about 2,500 sq ft, works out to roughly $2,360 per square foot. Chat with Zara if you'd like a deeper read on whether this detached fits your budget and timing.
Inside 10258 Highway 9 E
Every detail from the listing, in one place.
Type
Detached
Style
2-Storey
Living space
2500-3000 sq ftas stated on the listing
Parking
10 spacesYes garage
Basement
Half, Unfinished
Features & systems
Parking & garage
Garage
Yes
Parking spaces
10
Interior
Basement
Half · Unfinished
Exterior & construction
Pool
Yes
Lot & land
Lot size (sqft)
0
Listing & possession
Property style
2-Storey
Property class
Detached
10258 Highway 9 E Price & Sale History
Earlier listings of this property, list-price changes, and the most recent annual property tax on the listing.
Independent mortgage broker · OAC · rates subject to change and underwritingMortgage Squad →
Referral disclosure: Summitly may refer you to Mortgage Squad Advisors, an affiliated mortgage partner. You are free to choose any lender or mortgage professional.
Monthly cost
Enter a rate to see the monthly cost
An estimate, not a quote. Utilities and insurance are extra.
Affordability calculator
Estimated monthly payment
$28,985
/mo
based on the purchase price of $5,900,000
$1,180,000 cash
$4,720,000 financed
$3,975,479 total interest
Principal54%$4,720,000
Interest46%$3,975,479
20% down · 25-yr amortization · 5.50% rate. Principal & interest only — taxes, condo fees, and insurance not included.
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Figures are Summitly estimates for illustration only — not from TRREB or the MLS® feed, and not a mortgage approval, appraisal, or financial advice.
Rental income potential
Est. monthly rent
low–high
Gross yield
rent × 12 ÷ price
Cap rate (est.)
net of tax + fees
Summitly AI estimate for discussion only — not from TRREB or the MLS® feed, and not an appraisal or investment advice. Yield and cap rate are derived from the estimated rent versus the asking price.
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Mortgage financing is arranged through Mortgage Squad Advisors. Summitly is the technology platform that powers this site. Estimated values, AI insights, calculator results, and rental projections shown on this page are generated by Summitly and are not provided by, reviewed by, or sourced from TRREB, the MLS®, or the listing brokerage; they are not appraisals or opinions of value. The trademarks REALTOR®, REALTORS®, and the REALTOR® logo are controlled by the Canadian Real Estate Association (CREA) and identify real estate professionals who are members of CREA. The Coldwell Banker® name and logo are trademarks of Coldwell Banker Real Estate LLC.
Similar homes for sale nearby in Adjala-Tosorontio
Other 5–6 bed homes for sale in Adjala-Tosorontio around $5.9M.
Average days on market49Homes sold in about 49 days on average.
Sale-to-list ratio94.0%On average, homes sold below asking.
Active listings129Homes for sale here right now.
Median vs prior 90 days+12.0%Compared with Apr 24 – Jul 23, 2026: prices up.
Based on 55 sales from Jul 23 – Oct 21, 2026 (37 in the prior 90 days). Aggregate MLS® figures for closed sales; individual sold prices are shown only to signed-in members.
Questions About 10258 Highway 9 E
How much is 10258 Highway 9 E listed for?
10258 Highway 9 E is listed at $5,900,000 (MLS® N12834076). Summitly updates the price as soon as the MLS® record changes.
Is $5,900,000 a good price for 10258 Highway 9 E?
Summitly rates it Well Above Market: the asking price is 15% or more above Zara's estimate, an estimate built from recent sales in Adjala-Tosorontio. The rating is an automated opinion, not an appraisal; "What's it worth?" on this page shows how it is worked out. See Zara's estimate
Has the price of 10258 Highway 9 E changed?
Yes — it was first listed at $1 and is now $5,900,000, an increase of $5,899,999 (589999900.0%).
How many bedrooms and bathrooms does 10258 Highway 9 E have?
10258 Highway 9 E has 4 bedrooms and 2 bathrooms, with about 2,500–3,000 square feet of living space. It is a detached home in Adjala-Tosorontio.
How much would the monthly mortgage be on 10258 Highway 9 E?
About $28,985 a month — principal and interest on $5,900,000 with 20% down ($1,180,000), a 25-year amortization and an assumed 5.5% interest rate. The mortgage calculator on this page lets you change the down payment, amortization and rate.
How does 10258 Highway 9 E compare with other homes in Adjala-Tosorontio?
Its asking price of $5,900,000 is about 521% above the median sold price in Adjala-Tosorontio over the last 90 days, $950,000, across 55 closed sales on the TRREB MLS®. A city median mixes every type and size of home, so the comparable sales on this page are the closer guide.
Has 10258 Highway 9 E been sold before?
Summitly has no earlier MLS® sale or lease of 10258 Highway 9 E on record from the last two years. Older records aren't shown under TRREB rules.
Where is 10258 Highway 9 E?
10258 Highway 9 E is in Adjala-Tosorontio, ON. Schools, transit, parks and shops nearby are under Location & lifestyle on this page.
How long has 10258 Highway 9 E been on the market?
236 days — 10258 Highway 9 E was listed on February 27, 2026.
What is the price per square foot of 10258 Highway 9 E?
About $1,967 to $2,360 per square foot: the asking price of $5,900,000 over the 2,500–3,000 sq ft the listing gives as its size range.
Does 10258 Highway 9 E have parking or a garage?
Yes — the listing gives 10 parking spaces. Garage: Yes.
Does 10258 Highway 9 E have a basement, and is it finished?
The listing describes the basement as: Half, Unfinished.
