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Detached for sale at 21 Rennie Avenue, Markham - 5 bedroom, 5 bathroom - Photo 1 of 60
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$1,779,000

21 Rennie Ave

Markham, ON L6B 0M9

21 Rennie Ave, Markham — Listed at $1,779,000. 5 bedroom, 5 bathroom 2-Storey Detached. MLS® N12846804.

5Beds
5Baths
3000-3500sqft
Detached
2-Storey
4Parking
$7,218.85Taxes/yr · 2025
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Description

4 large bedrooms + Over 4500 sqft Living Space + Finished basement + Hardwood flooring throughout + Stained staircase with iron and metal pickets + Pot lights throughout + Updated light fixtures + Interlocking all around(2022) + Reverse osmosis system (2019) + Water softener + EV Charger Rough-In (46 amps) Welcome to this stunning 4+2 bedroom home with a finished basement, designed with space, elegance, and functionality in mind. Featuring a double door entry and 9-foot ceilings, this home offers a sunken library that can easily be converted into a fifth bedroom - perfect for growing families or a home office. The grand 17-foot soaring ceiling in the family room creates an impressive open-to-above space filled with natural light. The renovated kitchen boasts quartz countertops, large tiles, ample cabinetry, and a spacious breakfast area ideal for everyday living and entertaining. Upstairs offers four generously sized bedrooms with three full bathrooms, including a luxurious primary retreat with double sinks, a large glass standing shower, and walk-in closets with built-in shelving. Near top york region schools .Minutes to hwy 407, Walking distance to Walmart, Longos , major banks , restaurants, rexall pharmacy. Please See Attached Feature Sheet.

Property Details

Property TypeDetached
Style2-Storey
CommunityBox Grove
Rooms15+3
Kitchens2
Washrooms5
Square Feet3000-3500 sqft
Lot Dimensions46.26 × 88.67 ft
Fronting OnWest
Dir/Cross St9TH/14TH AVENUE
Garage TypeAttached
Garage Parking Spaces2
DriveAvailable
Parking Drive Spaces2
Total Parking Spaces4
ExteriorBrick
RoofAsphalt Shingle
FoundationPoured Concrete
BasementFinished
Fireplace FeaturesNatural Gas
Heating TypeForced Air
Heating SourceGas
A/CCentral Air
SewersSewer
Taxes (2025)$7,218.85
HSTIncluded In
Listed Date3/5/2026
Days on Market253 days
PossessionTBD

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Listing Courtesy of: RE/MAX REALTRON REALTY INC.

MLS® #N12846804

TRREBMLS®

The listing data is provided under copyright by the Toronto Regional Real Estate Board (TRREB). The listing data is deemed reliable but is not guaranteed accurate by TRREB. 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 trademarks MLS®, Multiple Listing Service® and the associated logos are owned by CREA and identify the quality of services provided by real estate professionals who are members of CREA. Used under license.

© 2026 Toronto Regional Real Estate Board. All rights reserved.

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HouseIndex Take: 21 Rennie Avenue

This detached (2-Storey) is located in the Box Grove neighbourhood of Markham.

The home offers 5+1 bedrooms, 5 bathrooms.

Features include a finished basement, 4 parking spaces including a 2-car garage, a fireplace.

Additional details: lot dimensions of 46.26 × 88.67 feet.

About Markham Real Estate

This Detached is located in the Box Grove community in Markham. Markham is a tech and innovation hub in York Region, home to IBM Canada, AMD, and hundreds of startups along Highway 7. Unionville Main Street offers heritage charm, while newer communities in Cornell and Cathedraltown provide modern family living. The city consistently ranks among the safest in Canada with top-performing schools. Detached homes in Markham are in high demand among families seeking space, privacy, and long-term equity growth.

Tech corridor along Highway 7Historic Unionville Main StreetYork Region's top-ranked schoolsPacific Mall & Markville Shopping Centre
~50 min commute to downtown TorontoWalkability: Moderate — walkable near Unionville and downtown Markham
View full Markham neighbourhood guide →