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For saleMLS® N13217692

166 Krieghoff Avenue, Markham, ON L3R 1W3

Unionville · L3R 1W3

$5,280,000

$1,509 / sq ft

5 months on market

Bedrooms
5+2
Bathrooms
9
Interior
3,500 sf
Parking
6
Lot
60 × 125 ft
Age
New years

What's special

  • Attached garage
  • Central air
  • Finished basement
  • Fireplace
  • Newly built
  • Auto garage door remote
  • Built-in oven
  • Central vacuum

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About this property

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.

Rooms

14 rooms. Dimensions as published by the listing brokerage.

Room dimensions and features
RoomLevelDimensionsFeatures
Living RoomMain6.47 × 5.07 m21.2 × 16.6 ft—
Dining RoomMain6.47 × 5.07 m21.2 × 16.6 ft—
KitchenMain4.69 × 4.47 m15.4 × 14.7 ft—
Family RoomMain6.12 × 4.69 m20.1 × 15.4 ft—
OfficeMain4.57 × 3.20 m15.0 × 10.5 ft—
Primary BedroomSecond5.74 × 5.30 m18.8 × 17.4 ft—
Bedroom 2Second5.15 × 4.16 m16.9 × 13.6 ft—
Bedroom 3Second4.90 × 3.73 m16.1 × 12.2 ft—
Bedroom 4Second4.31 × 3.73 m14.1 × 12.2 ft—
Bedroom 5Second4.21 × 3.22 m13.8 × 10.6 ft—
RecreationBasement9.80 × 4.62 m32.2 × 15.2 ft—
Media RoomBasement3.50 × 2.64 m11.5 × 8.7 ft—
BedroomBasement4.97 × 3.04 m16.3 × 10.0 ft—
BedroomBasement4.31 × 3.20 m14.1 × 10.5 ft—

Features

  • Auto Garage Door Remote
  • Built-In Oven
  • Central Vacuum
  • ERV/HRV

Property details

Property

Property type
detached
Bedrooms
5 + 2
Bathrooms
9
Interior size
3,500 sq ft
Year built
New
Lot size
60 × 125 ft
Possession
30/60/TBA

Interior

Basement
Finished
Heating
Forced Air · Gas
Cooling
Central Air
Fireplaces
1
Exposure
North

Exterior & services

Construction
Brick, Stone
Garage
Attached
Parking spaces
6
Sewer
Sewer

Costs

List price
$5,280,000
Property taxes
$17,997 / year (2025)
Price per sq ft
$1,509

Listing

MLS® number
N13217692
Status
For sale
Listed
May 30, 2026
Days on market
159
Last updated
September 23, 2026
Listing brokerage
PROHOME REALTY

Price & sale history

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Before you make an offer

What this home costs beyond the asking price, and how that price compares to what else is on the market.

How this price compares

This home is priced above most comparable listings — about 100% of comparable detached listings in Unionville are asking less.

$1.49MMedian $2.00M$3.28M
This home
$1,509 / sq ft
Comparable median
$752 / sq ft

Based on 60 comparable active detached listings in Unionville. These are asking prices, not sale prices.

Mortgage estimate

Down payment20.0% · minimum $1,056,000
$1,056,000
Interest rate5-year fixed, illustrative only
4.49%
Amortization
Principal & interest
$23,355.22
Property tax (est.)
$1,499.76
Estimated monthly
$24,855

Estimate only. Excludes CMHC insurance premiums, which apply below 20% down, and does not constitute a mortgage approval or an offer of credit.

Land transfer tax

Payable on closing, on top of the purchase price.

Ontario
$118,475
Total due on closing
$118,475

An estimate on the asking price of $5,280,000. Rates current as of September 2026; confirm the final figure with your real estate lawyer.

Listing courtesy of PROHOME REALTY. Listing data is provided in part by the Toronto Regional Real Estate Board (TRREB) and is deemed reliable but is not guaranteed accurate. Information is for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties. Data is updated every 15 minutes.

$5,280,000

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