166 Krieghoff Avenue, Markham, ON
Unionville, Markham · MLS® N13217692
About this home
In short
- A Masterpiece of Luxury Living in Prestigious Unionville.
- Featuring 5+2 bedrooms, each with its own ensuite and heated floors, this extraordinary home showcases refined craftsmanship, timeless design, and modern luxury...
- Expansive windows and strategically placed skylights highlight designer chandeliers, custom-fabricated slab vanity sinks, elegant white ash hardwood floors, cozy gas...
- The gourmet kitchen is equipped with top-of-the-line appliances and complemented by a second wok kitchen, ideal for both everyday family living and elegant entertaining.
- The luxurious primary suite offers a spacious walk-in closet and a spa-inspired 7-piece ensuite with heated floors and an automatic toilet.
A Masterpiece of Luxury Living in Prestigious Unionville! Brand-new custom residence offering over 6500 sq. ft. of exceptional living space, including approx. 4,460 sq. ft. on the main & second levels plus a beautifully finished 2,065 sq. ft. basement. Featuring 5+2 bedrooms, each with its own ensuite and heated floors, this extraordinary home showcases refined craftsmanship, timeless design, and modern luxury throughout. A grand stone façade and impressive 9' solid mahogany double entrance door open into a magnificent light-filled foyer. Expansive windows and strategically placed skylights highlight designer chandeliers, custom-fabricated slab vanity sinks, elegant white ash hardwood floors, cozy gas fireplaces, and a dramatic red oak mono-stringer open-riser staircase with LED lighting. The gourmet kitchen is equipped with top-of-the-line appliances and complemented by a second wok kitchen, ideal for both everyday family living and elegant entertaining. The luxurious primary suite offers a spacious walk-in closet and a spa-inspired 7-piece ensuite with heated floors and an automatic toilet. A second-floor laundry room adds convenience, while the upper-level sitting area creates a peaceful retreat for reading, meditation, or quiet relaxation. The fully heated walk-up basement is an entertainer's dream, complete with a spacious games room, large theatre room, wet bar/kitchen, and two additional bedrooms. Located in one of Unionville's most prestigious and established communities, close to top schools, parks, Main Street Unionville, boutique shops, restaurants, cultural events, Unionville GO Station, and everyday amenities. A rare opportunity to own a truly exceptional custom home in the heart of Unionville.
Key facts
- Property type
- Detached, 2-Storey
- MLS®
- N13217692
- Bedrooms
- 5+2 (7 total)
- Bathrooms
- 9 (1 half)
- Size
- 3500-5000 sq ft
- Lot
- 60 × 125 ft
- Cross streets
- Krieghoff Ave/Fred Varley Dr
- Parking
- 2 garage · 6 parking (attached)
- Driveway
- Private
- Basement
- Finished
- Heating
- Forced Air
- A/C
- Central Air
- Exterior
- Brick, Stone
- Foundation
- Concrete
- Roof
- Asphalt Shingle
- Sewer
- Sewer
- Property tax
- $17,997 / 2025
- Days on market
- 139
- Listing brokerage
- PROHOME REALTY
Rooms
Listed at $5,280,000. Going by how homes in Unionville and the wider GTA have actually closed against their asking prices (about 98%, 38 local closings in 90 days), the likely sale price is near $5.18M, if it sells. A realistic range is $4.86M to $5.84M.
Independent value check: no figure for this home. Going only by the sales record, our model lands more than 25% below the ask. At that distance an automated figure has rarely been close to the eventual sale price, so we are not printing one. The listing describes a new or newly built home, and the public record (tax bill, size) can still describe what stood on the lot before.
Longer on the market than typical. 139 days on the market against about 26 for homes like it here, and asking 55% above where comparable closings put it.
Total price vs nearby homes. Likely closing about $5.18M, from 38 recent closings in this pocket.
The market behind the math:
About 0.9 months of inventory: 12 detached homes for sale in the area against 38 closings in the last 90 days. Under two months favours sellers, over four favours buyers.
Price per square foot: this home lists at $1,242/sqft against an area asking average of $713/sqft.
How this estimate is builtthe short version
This figure comes from a model built on about 44,000 recent GTA sales. It weighs this home’s tax assessment, size, age, location and features against what homes like it actually sold for, including sales in this neighbourhood.
It never sees the asking price. The 38 most comparable recent sales on their own, adjusted for size, beds, baths and lot, point to about $2.15M. Condition and finishes remain an in-person call.
What the listing highlights5 points to weigh
Claims from the listing, worth confirming in person. I can book you a private showing.
- Upscale kitchen: a genuine value driver, verify the appliances, stone, and finishes in person. Value driver
- Heated floors: comfort and a premium-finish signal. Lifestyle
- Primary suite: a key comfort and resale feature. Lifestyle
- Hardwood floors: quality hardwood is durable and broadly desirable. Lifestyle
- Transit / schools nearby: convenience and resale support, verify the exact distances and school catchment. Value driver
Read this with carewhy it’s an estimate, not an appraisal
The listing states size as a wide range, so the size adjustment is approximate and this estimate is a rough read. I can confirm exact square footage to tighten it.
There were not many closely comparable homes right in Unionville, so I widened the search to the surrounding area.
Based on 38 comparable homes that sold in Unionville over the past two years, from 230 closings there.
Nothing closely matching this home is listed nearby right now, so these are the nearest detached listings on the market. Homes like this one have recently closed around $3.40M, which is where my estimate comes from.
Per square foot, these ask about $796/sqft; this home lists at $1,242/sqft. Size is part of the price story, not just the sticker.
The 5 closest active listings nearby.
See all comparable homesSold price trend
Median sold price for detached homes in Unionville: $1.70M in September 2026, down 7% from a year ago, on 126 closings in 11 months.
Line: median sold price, each month averaged with its neighbours and weighted by closings. Bars: closings that month.
Month by month
| Month | Median sold | Closings |
|---|---|---|
| October 2025 | $1.76M | 8 |
| November 2025 | $1.84M | 9 |
| December 2025 | $1.78M | 9 |
| January 2026 | $1.63M | 10 |
| March 2026 | $1.68M | 12 |
| April 2026 | $1.59M | 19 |
| May 2026 | $1.69M | 9 |
| June 2026 | $1.75M | 16 |
| July 2026 | $1.73M | 5 |
| August 2026 | $1.60M | 19 |
| September 2026 | $1.70M | 10 |
Neighbourhood & location
Unionville, Markham, ON
Enter a workplace or destination and we’ll show the door-to-door time by car, transit and bike.
How asking prices compare in the closest areas to this home. Longer bars mean a pricier market.
Typical asking price of active listings of the same type, per area (outliers removed). Markham.
Get the full neighbourhood report (schools, parks, transit & safety) →
Affordability & Mortgage
Income needed assumes a ~32% GDS ratio; weekly is mortgage principal & interest only. Price ÷ income is the home price over the income needed. Fixed reference assumptions so listings compare on equal footing, not a lending decision.
Calculate and customize your mortgage and other expenses
Adjust the down payment, rate, and amortization, and add property tax, condo fees, and heating to see your true monthly cost.
Your numbers
Homes over $1.5M can't be insured, so 20% down or more is required.
Conventional (20%+ down). Best insured 5-year fixed 4.34% via Ratehub.ca (as of October 16, 2026); conventional rates run a little higher.
Mortgage amount $4,224,000 · 4.49% over 25 years
Total monthly cost
- Mortgage payment (monthly equivalent)
- $23,355
- Property tax
- $1,500
- Condo / maintenance fees
- $0
- Heating
- $0
- Estimated monthly cost
- $24,855
Add your own property tax, condo fees, and heating on the left for a sharper total.
One-time closing costs
- Ontario land transfer tax
- $118,475
- Estimated closing costs
- $118,475
Plus your down payment of $1,056,000. Legal fees, title insurance, and adjustments are extra and vary by deal.
Mortgage stress test
Lenders qualify you at the greater of your rate plus 2% or 5.25%. You do not pay this rate. It just shows you could still handle payments if rates rose, so aim to stay comfortable at this higher number.
Over the full 25 years
At the end of your 5-year term
- Total paid over the term
- $1,401,313
- Principal paid down
- $516,095
- Interest paid
- $885,218
- Balance remaining
- $3,707,905
Talk to Team Asgarian about your options
Rates and programs change often. We will connect you with a trusted mortgage professional and build a plan that fits your budget and goals.
Estimates only, not a mortgage quote or pre-approval. Figures use Canadian semi-annual compounding, current minimum down-payment rules, CMHC premium tiers, and Ontario (plus Toronto, when selected) land transfer tax. Actual rates, taxes, insurance, and closing costs vary by lender and property. Confirm every number with your mortgage professional.
Investor snapshot
Thinking of this home as an investment? We will pull real comparable rents and run the full numbers with you.
Talk about the numbersThe last 8 whole-home leases in Unionville signed at a median of $4,718 a month; adjusted to this home for size, beds and baths, and for where rents stood the month each signed, that is $5,615. The gross yield above is on the asking price, before taxes and upkeep; the cap rate is after them. A finished basement or second suite can push real rent above it. Taxes, fees, and vacancy vary by property, and cap rate is before financing.
Helpful resources
All information deemed reliable but not guaranteed. For personal, non-commercial use only. Listing courtesy of PROHOME REALTY. MLS®/PropTx.