Welcome to a stunning custom-built home in prestigious Unionville. This masterpiece features soaring ceilings, hardwood & marble floors, full panelled walls, and intricate mouldings. The chefs kitchen boasts Thermador appliances, marble countertops, and custom cabinetry. Enjoy a wine cellar, wet bar, and Red Oak library. Prime location near top schools, Main Street Unionville, Toogood Pond, and major highways. A rare opportunity to own a one-of-a-kind luxury residence.
4 bedrooms, 6 bathrooms, about 3,500 sq ft, works out to roughly $1,129 per square foot, the bed-to-bath ratio is generous. Chat with Zara if you'd like a deeper read on whether this detached fits your budget and timing.
Inside 165 Krieghoff Ave
Every detail from the listing, in one place.
Type
Detached
Style
2-Storey
Living space
3500-5000 sq ftas stated on the listing
Parking
6 spacesYes garage
Basement
Finished with Walk-Out
Features & systems
Parking & garage
Garage
Yes
Parking spaces
6
Interior
Basement
Finished with Walk-Out
Lot & land
Lot size (sqft)
8394
Listing & possession
Property style
2-Storey
Property class
Detached
165 Krieghoff Ave Price & Sale History
Earlier listings of this property, list-price changes, and the most recent annual property tax on the listing.
For saleListedThis listingMLS® N12659592$3,949,900
Sourced from MLS®. Includes earlier listings of this property on record.
What's it worth?
How 165 Krieghoff Ave Compares to the Markham Market
Zara compares it with recent sales of similar homes nearby. It's a guide, not an appraisal.
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
$19,405
/mo
based on the purchase price of $3,949,900
$789,980 cash
$3,159,920 financed
$2,661,482 total interest
Principal54%$3,159,920
Interest46%$2,661,482
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.
For homeowners nearby
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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 Markham
Other 3–5 bed homes for sale in Markham around $3.9M.
Average days on market30Homes sold in about 30 days on average.
Sale-to-list ratio99.3%On average, homes sold below asking.
Active listings1,475Homes for sale here right now.
Median vs prior 90 days+1.9%Compared with May 7 – Aug 5, 2026: prices up.
Based on 1,282 sales from Aug 5 – Nov 3, 2026 (860 in the prior 90 days). Aggregate MLS® figures for closed sales; individual sold prices are shown only to signed-in members.
165 Krieghoff Ave is listed at $3,949,900 (MLS® N12659592). Summitly updates the price as soon as the MLS® record changes.
Is $3,949,900 a good price for 165 Krieghoff Ave?
Summitly rates it Well Above Market: the asking price is 15% or more above Zara's estimate, an estimate built from recent sales in Markham. 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 165 Krieghoff Ave changed?
No — 165 Krieghoff Ave is still listed at its original asking price of $3,949,900.
How many bedrooms and bathrooms does 165 Krieghoff Ave have?
165 Krieghoff Ave has 4 bedrooms and 6 bathrooms, with about 3,500–5,000 square feet of living space. It is a detached home in Markham.
Is 165 Krieghoff Ave close to transit?
The nearest rapid-transit station is Unionville GO Station (Stouffville GO), about 1.7 km (about a 21-minute walk) in a straight line. Centennial GO Station is about 2.6 km, and Markham GO Station is about 4.9 km. Distances are straight-line, not walking routes; check the transit agency for routes and schedules.
How much would the monthly mortgage be on 165 Krieghoff Ave?
About $19,405 a month — principal and interest on $3,949,900 with 20% down ($789,980), 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 165 Krieghoff Ave compare with other homes in Markham?
Its asking price of $3,949,900 is about 261% above the median sold price in Markham over the last 90 days, $1,095,000, across 1,282 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 165 Krieghoff Ave been sold before?
Summitly has no earlier MLS® sale or lease of 165 Krieghoff Ave on record from the last two years. Older records aren't shown under TRREB rules.
Where is 165 Krieghoff Ave?
165 Krieghoff Ave is in Markham, ON. Schools, transit, parks and shops nearby are under Location & lifestyle on this page.
How long has 165 Krieghoff Ave been on the market?
303 days — 165 Krieghoff Ave was listed on January 4, 2026.
What is the price per square foot of 165 Krieghoff Ave?
About $790 to $1,129 per square foot: the asking price of $3,949,900 over the 3,500–5,000 sq ft the listing gives as its size range.
Does 165 Krieghoff Ave have parking or a garage?
Yes — the listing gives 6 parking spaces. Garage: Yes.
