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$5,280,000
For SaleListed 98 days agoVirtual Tour

166 Krieghoff Avenue, Markham, ON L3R 1W3

Unionville
7
9
3,500–5,000 ft²
Detached6 Parking60 × 125 ft Lot
Listed by PROHOME REALTY

Assigned school

84% EQAO

Parkview Public School

Childcare

6 centres

0.4 km closest

Development

5 shown

Active applications within 800 m

Block profile

80% owners

$130k median

Small-area Census counts are randomly rounded by Statistics Canada.

Explore this address →

Property Information

Property TypeDetached
Lot Size60 × 125 ft
BasementFinished
Parking6 parking spaces · Private · Attached
Property taxes$17,997/yr (2025)
Days on Market98 Days
Listed DateMay 30, 2026
MLS® NumberN13217692

Monthly Cost

Description

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.

Listing History

Event
Date
Price
Relisted
Jul 23, 2026
$5,280,000
Listed
May 30, 2026
$5,280,000

Shows activity for this MLS® listing. Prior listings and sold records appear when available.

Location

Map showing 166 Krieghoff Avenue, Markham, ON L3R 1W3 inside the Parkview Public School attendance boundaryView on Map

School Catchments

School boundaries and eligibility may change. Confirm school eligibility directly with the school board.

All Markham school catchments

Licensed Childcare Nearby

6 licensed centres nearby · closest 411 m

Licensed Child Care Centre
Parkview Ymca School Age
22 Fonthill Boulevard, Markham
0.4 km
Before & after school
Operator: The Ymca Of Greater Toronto
Licence #0005446·Child Care Centre
Licensed Child Care Centre
Upper Canada Child Care At St. John Xxiii Ces
125 Kreighoff Avenue, Unionville
0.4 km
Before & after school
Operator: Upper Canada Creative Child Care Centres Of Ontario
Licence #0003955·Child Care Centre
Licensed Child Care Centre
It Takes A Village Preschool
600 Village Parkway, Unionville
0.7 km
Half day
Operator: Grace Church Markham Nursery School
Licence #58573·Child Care Centre
Licensed Child Care Centre
605061 Ontario Ltd - Between Friends
120 Carlton Road, Unionville
0.8 km
Before & after school
Operator: 605061 Ontario Ltd.
Licence #06438·Child Care Centre
Licensed Child Care Centre
Unionville Co-Operative Nursery School Inc.
131 Main Street, Unionville
0.8 km
Half day
Licence #00728·Child Care Centre
Licensed Child Care Centre
Unionville Discovery Preschool
100 Carlton Road, Markham
0.8 km
Full day
Operator: Unionville Discovery Preschool Inc.
Licence #56136·Child Care Centre

Area Checks

Also checked, nothing flagged at this location: flood hazard mapping, conservation-regulated areas, provincially significant wetlands, the Greenbelt, the Oak Ridges Moraine, the Niagara Escarpment plan, areas of natural and scientific interest, rail corridors, hydro transmission corridors.

Screened against public government mapping at this home’s location — simplified boundaries, not a survey, an appraisal or a legal determination. Confirm anything that matters with the authority named.

About Unionville

View Unionville on Market

Who lives here

A snapshot of this home’s immediate area — the census dissemination area it sits in.

80%
Homeowners
71%
Households with kids
$130,000
Median income
44
Median age
More about this area
3.1
Avg. household size
69%
University degree
36%
Newcomers (immigrants)
Age profile491 residents
Under 2024%
20–3416%
35–6445%
65+14%

StatCan 2021 Census · this home’s dissemination area (DA 35190588). Values are randomly rounded by Statistics Canada for privacy.

Homes for sale nearby

DistrictIQ Inc., BrokerageMLS® data provided by PropTxUpdated Jul 23, 2026
Data sources & legal disclosures

Listing data is provided by the Toronto Regional Real Estate Board (TRREB) and PropTx under the Internet Data Exchange (IDX) program. The information is deemed reliable but is not guaranteed accurate by TRREB, PropTx, CREA or DistrictIQ Inc., Brokerage, may not reflect the most current status, and is subject to errors, omissions, prior sale, change, or withdrawal without notice. Listings should be independently verified.

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