- Bedrooms
- 4+1
- Bathrooms
- 5
- Size
- 3,000–3,500sq ft
- Per sq ft
- $510at the range’s middle
- Lot
- 45.98 x 91.81 ft
- Tax a year
- $7,2192025 tax year
- Parking
- 42 built-in
- Days on market
- Members
The brief
About 21 Rennie Ave
21 Rennie Ave is a 4+1-bedroom, 5-bathroom detached house in Box Grove, Markham, listed for sale at an asking price of $1,659,000 (MLS® N13780746).
Welcome To One Of The Most Prestigious Communities, Box Grove! Perfectly Located Close To The Amenities Every Family Needs, 21 Rennie Ave. Offers An Exceptional Combination Of Space, Style, And Functionality. This Impressive Manchester Model By Arista Homes Features 4 Large Bedrooms, Over 4,500 Sq Ft Of Living Space, A Finished Basement (2022), And Hardwood Flooring Throughout. Thoughtfully Upgraded And Meticulously Maintained, This Home Offers A Long List Of Tasteful Improvements (Please See Attached Feature Sheet). The Full-Brick Exterior, Beautifully Maintained Curb Appeal, And Elegant Double-Door Entry Create An Impressive First Impression. Inside, 9-Ft Ceilings Lead Into A Spacious And Functional Foyer. The Main Floor Features A Dedicated Office, Offering The Flexibility To Be Converted Into A Main-Floor Bedroom With Ensuite Bath Perfect For Multi-Generational Living Or Guests. The True Showstopper Is The Stunning Family Room, Featuring A Dramatic 17-Ft Soaring Ceiling And Open-To-Above Design, Creating An Incredible Sense Of Space And Filling The Home With Natural Light. The Renovated Kitchen Features Quartz Countertops, Large-Format Tiles, Abundant Cabinetry, And A Spacious Breakfast Area Perfect For Everyday Family Living And Entertaining. Upstairs, Four Generously Sized Bedrooms Are Complemented By Three Full Bathrooms (2022). The Luxurious Primary Retreat Features Double Sinks, A Large Glass Standing Shower, And Spacious Walk-In Closets With Built-In Shelving. Ideally Located Near Top York Region Schools And Just Minutes From Highway 407, This Home Is Also Within Walking Distance To Walmart, Longo's, Major Banks, Restaurants, And Rexall Pharmacy.
Insights
Condition Score
Good78/1002 documented update signals
Source: Listing age, structured features and disclosed update language; not an inspection.
Cashflow Quality
Shortfall15/100−$3,671/mo against the cost of owning (20% down, 4.8%, 25 yrs)
Source: Median of 39 detached homes with 5 bedrooms for lease in Markham right now. Cost of owning counts the mortgage and property tax.
Condition uses listing-record signals, not an inspection.
The home
Key facts
- Tax
- $7,219 / 2025
- MLS® number
- N13780746
- Board
- TRREB MLS®
- Property Type
- Detached
- Days on market
- Size
- 3000-3500 sqft
- Lot Size
- 45.98 x 91.81 ft
- Listed on
- Parking
- 2 Built-In, 4 Parking
Property details
Property
- Property Type
- Detached
- Style
- 2-Storey
- Community
- Box Grove
- Municipality
- Markham
Building
- Size
- 3000-3500 sqft
- Construction
- Brick
Inside
- Bedrooms
- 4+1
- Bathrooms
- 5
- Bathroom Details
- 1 × 5pc 2nd, 2 × 4pc 2nd, 1 × 2pc Main, 1 × 3pc Bsmt
- Basement Type
- Finished
- Kitchens
- 1
Parking
- Driveway
- Private
- Garage Type
- Built-In
- Garage
- 2
- Additional Parking
- 2
- Total Parking
- 4
Utilities
- Water
- Municipal
- Cooling
- Central Air
- Heating Type
- Forced Air
Land
- Sewer
- Sewers
- Frontage
- 45.98 ft
- Depth
- 91.81 ft
- Lot Size
- 45.98 x 91.81 ft
Additional
- Foundation
- Concrete
- Roof
- Asphalt Shingle
- Fireplace
- Yes
- Pool
- None
- Den
- Yes
- Family room
- Yes
- Extras
- All Existing Appliances, Window Coverings, EV Charger Rough-in (46amps), Reverse Osmosis System,All Light Fixtures
Rooms
| Room | Size | Features | Level |
|---|---|---|---|
| Library | 2.74 × 3.84 m | hardwood floor, Pot Lights, Window | Main |
| Living | 4.27 × 5.49 m | hardwood floor, Pot Lights, Combined W/Dining | Main |
| Dining | 4.27 × 5.49 m | hardwood floor, Pot Lights, Combined W/Living | Main |
| Kitchen | 3.17 × 4.15 m | Tile Floor, Centre Island, Stainless Steel Appl | Main |
| Breakfast | 3.78 × 4.21 m | Tile Floor, Open Concept, W/O To Yard | Main |
| Family | 4.51 × 4.88 m | hardwood floor, Open Concept, Window Flr to Ceil | Main |
| Primary | 3.96 × 6.58 m | hardwood floor, W/I Closet, 5 Pc Ensuite | 2nd |
| 2nd Br | 3.47 × 3.66 m | hardwood floor, Closet, 4 Pc Ensuite | 2nd |
| 3rd Br | 3.66 × 3.96 m | hardwood floor, Closet, Semi Ensuite | 2nd |
| 4th Br | 3.35 × 5.85 m | hardwood floor, Closet, Semi Ensuite | 2nd |
| Kitchen | 5.49 × 13.11 m | Laminate, Open Concept | Bsmt |
| Rec | 5.49 × 13.11 m | Laminate, Combined W/Kitchen, Open Concept | Bsmt |
| Media/Ent | 3.96 × 8.84 m | Laminate, Open Concept | Bsmt |
| Br | 2.13 × 3.05 m | Laminate, Closet | Bsmt |
Listing history
Buy/sell history for 21 Rennie Ave, Markham, Ontario
Sale history on this site covers the last 2 years, the window permitted under the TRREB MLS® VOW agreement.
| Date Start | Date End | List Price | Price | Event | Listing ID |
|---|---|---|---|---|---|
| Date StartN/A | N/A | $1,659,000 | N/A | For Sale | N13780746 |
Members see the full history. Prices are hidden from signed-out visitors.
The numbers
Mortgage Calculator
Plan with the current asking price
CMHC insurance: not required at 20% down. Payments use Canadian semi-annual compounding.
Mortgage Details
4.8% · 5-year term · 25-year amortization · 20% down
- Total down payment
- $331,800
- Total mortgage amount
- $1,327,200
- Total interest payment
- $943,500
- Total purchase cost
- $2,602,500
- Mortgage payment
- $7,569/mo
Cash Flow Analysis
If you rented this home out at 20% down
Break-even down payment
59%Monthly carrying cost
$8,171- Rent $4,500
- Shortfall $3,671
Rental income opens at $4,500, the median asking rent of 39 comparable homes for lease in Markham. Type over it with the rent you expect. This is a planning tool, not advice.
Land transfer tax on this home
- Ontario land transfer tax
- $29,655
- Total land transfer tax
- $29,655
- First-time buyer rebates (Ontario up to $4,000)
- −$4,000
- Total for first-time buyers
- $25,655
See how this is worked out
- 0.5% on the first $55,000
- $275
- 1.0% from $55,000 to $250,000
- $1,950
- 1.5% from $250,000 to $400,000
- $2,250
- 2.0% from $400,000 to $1,659,000
- $25,180
- Ontario total
- $29,655
An estimate at the asking price, for a home with one or two single-family residences. Your lawyer confirms the exact amount.
Estimate
Estimated value requires sign in
Market estimates use sold comparables and are available after you sign in and accept MLS® VOW terms.
The estimate is an automated value built from public and MLS® data. It is not an appraisal; ask Kassaundra Dobson, Broker of Record for a full comparative market analysis.
Comparable sales
Comparable sales require sign in
Closing prices and sold comps are available to registered visitors who accept MLS® VOW terms on this site.
The land
Lot
- Lot area
- 4,221 sq ft392 m²
- Street frontage
- 45.98 ft14 m
- Depth
- 91.81 ft28 m
The area is the frontage multiplied by the depth, so boundaries are approximate. Confirm with a survey before you buy.
Source: the MLS® listing record.
Land and environment
Public records about this location. Not part of the MLS® listing and not provided by the listing brokerage.
Water and conservation3
- Not in Toronto and Region Conservation Authority’s mapped regulated areaAt the address
- No mapped wetland within 120 m120 m
- No water-supply well recorded within 250 m4 test or monitoring holes also recorded.250 m
Toronto and Region Conservation Authority · Province of Ontario open data
Planning and building activity2
- Outside the Greenbelt, Oak Ridges Moraine and Niagara Escarpment plan areasAt the address
- Nearest airport: 8.0 km8 km
Province of Ontario open data
Around the home2
- Nearest rail line: 650 m650 m
- A trail on the Ontario trail network within 1 km1 km
Province of Ontario open data
Environmental records4
- No licensed pit or quarry within 2 km2 km
- No recorded oil, gas or salt well within 250 m250 m
- No facility within 1 km reports pollutant releases to Environment CanadaOnly facilities above the inventory’s reporting thresholds are listed.1 km
- No federal contaminated site within 1 kmThe federal inventory covers federal land only; it says nothing about provincial or private sites.1 km
Province of Ontario open data · Government of Canada open data
Power and internet3
- Electricity is distributed here by Alectra Utilities CorporationAt the address
- Wired internet 50/10 Mbps or faster is listed at a household 40 m awayFixed wireless 50/10 Mbps or faster. LTE mobile coverage listed. ISED’s National Broadband Data at the nearest household point (40 m from the listing); 50/10 Mbps is its top category and includes faster plans. Confirm with a provider for this address.40 m
- Across the surrounding area: fibre to the home, cable, DSL internet listedFibre to the home: Bell, Rogers. Cable: Rogers. DSL: Bell. Fixed wireless: Bell, Dash Networks, Rogers, Routcom. Mobile: Bell, Freedom Mobile, Rogers, Telus. Satellite: Xplore. ISED’s list for the surrounding ~25 km² area; check with a provider for this address.Area-wide
Ontario Energy Board · Innovation, Science and Economic Development Canada
Each record is placed at the distance its own line states. None of it is an inspection of the property. Confirm anything that matters to you with the municipality, Toronto and Region Conservation Authorityor the record’s publisher.
Contains information licensed under the Open Government Licence – Canada. Contains information licensed under the Open Government Licence – Ontario. Contains information made available under the Toronto and Region Conservation Authority Open Data Licence v1.0.
The market
Detached homes for sale in Box Grove right now
- For sale now
- 12
- Median asking price
- $1.42M
- New in 7 days
- 3
- Price cuts
- 8%
Middle half: $1.26M to $1.58M
4 in 28 days
1 listing
This home is asking 17% above the median, higher than three quarters of them.
See all homes in Box GroveAsking prices and counts of the MLS® listings on this site as of today. Asking figures only, never sold or leased prices.
Market area · filters apply to the charts below
The street
Map and tour
Transit nearby
| Station | Lines | Distance |
|---|---|---|
| Cornell Bus Terminal | YRT bus rapid transit: Viva Purple | 1.6 km |
| Markham Stouffville Hospital | YRT bus rapid transit: Viva Purple | 2.1 km |
| Highway 7 / Wootten | YRT bus rapid transit: Viva Purple | 2.2 km |
| Highway 7 / Main Markham | YRT bus rapid transit: Viva Purple | 3.3 km |
| Markham GO | GO Transit train: Stouffville | 3.8 km |
The nearest subway, light rail, train, bus rapid transit stations 5 km, as the crow flies. Source: GO Transit schedule data (GTFS) from Metrolinx under the Open Government Licence – Ontario – Metrolinx; YRT schedule data (GTFS) from York Region Transit under the YRT Open Data Licence 2.0, downloaded October 18, 2026. Data used in this product or service is provided with the permission of Metrolinx. Metrolinx makes no representations or warranties of any kind, express or implied, with respect to the Data and assumes no responsibility for the accuracy or currency of the data used in this product or service. Contains information licensed under the Open Government Licence – Ontario – Metrolinx. Contains public transit Information made available under YRT's Open Data Licence.
Schools nearby
| Elementary | Type | Distance | EQAO average 2024–25 |
|---|---|---|---|
| Legacy Public SchoolYork Region DSB | Public · grades JK–8 | 1.2 km | 88%Grade 6 average |
| David Suzuki Public SchoolYork Region DSB | Public · grades JK–8 | 1.3 km | 86%Grade 6 average |
| Sir Richard W Scott Catholic Elementary SchoolYork CDSB | Catholic · grades JK–8 | 2.5 km | 93%Grade 6 average |
| École élémentaire Laure-RièseConseil scolaire Viamonde | French-language public · grades JK–6 | 6.9 km | 88%Grade 6 average |
| Secondary | Type | Distance | Grade 9 math 2024–25 |
|---|---|---|---|
| Bill Hogarth Secondary SchoolYork Region DSB | Public · grades 9–12 · French Immersion | 2.8 km | 78%Grade 9 math |
| Markham District High SchoolYork Region DSB | Public · grades 9–12 | 2.8 km | 77%Grade 9 math |
| St Brother André Catholic High SchoolYork CDSB | Catholic · grades 9–12 · French Immersion | 4.2 km | 69%Grade 9 math |
| Middlefield Collegiate InstituteYork Region DSB | Public · grades 9–12 | 4.6 km | 72%Grade 9 math |
EQAO: share of students at or above the provincial standard, 2024–25 (Ontario open data). These are the schools nearest this home, not the schools it is assigned to: boundaries change, and some schools take students by application. Confirm with the board before you buy. Contains information licensed under the Open Government Licence – Ontario.
The verdict
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Sold prices in Box Grove are shown to signed-in members.