166 Krieghoff Avenue, Markham, ON L3R 1W3

About this home

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.

Home details

Days on market

Not reported

Property type

Detached

MLS® number

N13217692

Source status

Extension

Bedrooms

7

Bathrooms

9

Postal code

L3R 1W3

Kitchens

2

Kitchens above grade

2

Family room / den

Yes

Interior size (reported range)

3500-5000

Lot depth

125 ft

Garage parking spaces

Not reported

Total parking spaces

6

Occupancy

Owner

Possession type

Flexible

Garage

Attached

Annual property tax

17997.15

Basement

Finished

Interior features

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

Architectural style

2-Storey

Parking features

Private

Pool features

None

Fireplace

Yes

Waterfront

No

Garage available

Yes

Heating system

Forced Air

Heating fuel

Gas

Cooling

Central Air

Sewer

Sewer

Direction facing

North

Construction materials

Brick, Stone

Roof

Asphalt Shingle

Foundation

Concrete

MLS entry age (not confirmed DOM)

160 days

These details come from the listing source. Please confirm measurements and fees before making a decision.

Utilities and services

Sewer

Sewer

Heating system

Forced Air

Heating fuel

Gas

Cooling

Central Air

A reported service is not necessarily included in rent or maintenance. Missing information does not mean a service is absent.

Rooms & virtual tours

Bedrooms above grade

5

Bedrooms below grade

2

Rooms above grade

14

Den / family room reported

Yes

Reported counts are shown independently. Room dimensions have not been inferred from these counts.

Ask the listing brokerage for floor plans and measured room layouts.

Listing dates & price record

Asking amount

$5,280,000

1. May 30, 2026

   Original MLS entry

   Entry into the source MLS system; distinct from days on market.

Coverage varies by listing. Dates are source-reported calendar dates; only the latest reported asking-price change is shown. This is a partial record.

Estimate monthly costs

Adjust the assumptions for your own scenario. Blank expenses are unknown; enter them for a fuller estimate.

Planning estimate with Canadian semiannual compounding. Excludes mortgage insurance, closing costs and special assessments. This is not a lender quote or mortgage approval.

Map and neighbourhood

Region / county

YORK

Municipality

MARKHAM

MLS® community

Unionville