21 Rennie Avenue, Markham, ON
Box Grove, Markham · MLS® N13448426
About this home
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 (2022), 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 doublesinks, 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.
Key facts
- Property type
- Detached, 2-Storey
- MLS®
- N13448426
- Bedrooms
- 5 (4 + 1)
- Bathrooms
- 5 (1 half)
- Size
- 3000-3500
- Lot
- 45.98 × 91.81 ft
- Cross streets
- Ninth Line & Copper Creek Dr
- Parking
- 2 garage · 4 parking (built-in)
- Driveway
- Private
- Basement
- Finished, Full
- Kitchens
- 2 (1 + 1)
- Heating
- Forced Air
- A/C
- Central Air
- Exterior
- Brick
- Foundation
- Concrete
- Roof
- Asphalt Shingle
- Sewer
- Sewer
- Property tax
- $7,219 / 2025
- Days on market
- 32
- Listing brokerage
- RE/MAX REALTRON REALTY INC.
Rooms
hardwood floor · pot lights · combined w/dining
laminate · combined w/kitchen · open concept
hardwood floor · walk-in closet(s) · 5 pc ensuite
laminate · closet
hardwood floor · pot lights · combined w/living
hardwood floor · closet · 4 pc ensuite
hardwood floor · closet · semi ensuite
tile floor · centre island · stainless steel appl
laminate · open concept
hardwood floor · closet · semi ensuite
laminate · open concept
hardwood floor · open concept · window floor to ceiling
tile floor · open concept · w/o to yard
hardwood floor · pot lights · window
Listed at $1,699,000, this home is about 2% below comparable homes, worth a close look. The number above is my independent estimate of value, not the asking price.
Below comparable homes on total price, yet the price per square foot ($523/sqft) is in line with the area, which usually points to a smaller or more efficient layout.
Based on 8 similar homes nearby, adjusted for size, beds, and baths.Median of 8 comparable active listings, adjusted for size, beds, and baths. The city (MPAC) assessment points to about $1.64M, a close match.
How I got there
Here is the exact math behind the estimate. I start from the closest comparable listing and adjust for the real differences (size, beds, baths) to land on a like-for-like value for this home.
- Closest comparable, listed at $1.65M
- Bedrooms +$30K
- Bathrooms +$15K
- Adjusts to $1.69M
That comparable adjusts to $1.69M; the $1.74M estimate above is the median of all 8 comparables, which is steadier than any single home.This uses comparable active listings, not sold prices. Lot, condition, and finishes are my in-person call, and I can run a full CMA with recent solds.
On schools, this address is zoned for David Suzuki PS, one of the higher-rated public schools in the area. A strong catchment tends to hold value and widen your resale pool, especially with family buyers.
On location, this is a very walkable address with everyday errands close by. Copper Creek Dr / Rizal Av is about a 3-minute walk away. Walkable, transit-friendly spots tend to hold value and widen your resale pool.
Total price vs nearby homes. Fair value about $1.74M, median of 8 comparables.
What the listing highlightsThese are claims from the listing. The only way to know for sure is to see it in person, and I am happy to book you a private showing.
- Finished basement: added living space, worth checking ceiling height and that the work was permitted.
- Renovated / rebuilt: recent work can mean fewer upfront costs, worth confirming the scope, quality, and that permits were pulled.
- Tall ceilings: they transform how a home feels, worth confirming the actual heights room to room.
- Hardwood floors: quality hardwood is durable and broadly desirable.
- Value driver
- Worth verifying
- Lifestyle
The closest active listings by size, beds, and price, so you can see what this home is up against.
The 4 closest active listings nearby.
See all comparable homesThis home lists 1% below the area average of $528/sqft.
28 days longer than the Markham average (4 days).
View comparable listingsPrice per square foot vs the area average.
Neighbourhood & location
Box Grove, Markham, ON
Enter a workplace or destination and we’ll show the door-to-door time by car, transit and bike.
Getting around
Very WalkableA walkability read built from the amenities around this home: how close the nearest transit stop is, and how many grocery, dining, park, and pharmacy destinations fall within a 15-minute walk. It is a guide, not a guarantee. Places data from Google.
Most daily errands can be done on foot.
🚉 Nearest transit: Copper Creek Dr / Rizal Av, about 234 m away
Within a 15-minute (1.5 km) walk.
How asking prices compare in the closest areas to this home. Longer bars mean a pricier market.
Typical asking price of active listings of the same type, per area (outliers removed). Markham.
Get the full neighbourhood report (schools, parks, transit & safety) →
The public and Catholic schools this address is zoned for, with EQAO results (the share of students meeting Ontario's provincial standard).
School attendance boundaries and EQAO results are Ontario government data and can change. Confirm the current catchment with the school board before relying on it.
Affordability & Mortgage
Income needed assumes a ~32% GDS ratio; weekly is mortgage principal & interest only. Price ÷ income is the home price over the income needed. Fixed reference assumptions so listings compare on equal footing, not a lending decision.
Calculate and customize your mortgage and other expenses
Adjust the down payment, rate, and amortization, and add property tax, condo fees, and heating to see your true monthly cost.
Your numbers
Homes over $1.5M can't be insured, so 20% down or more is required.
Conventional (20%+ down). Best insured 5-year fixed 3.99% via Ratehub.ca (as of July 17, 2026); conventional rates run a little higher.
Mortgage amount $1,359,200 · 4.14% over 25 years
Total monthly cost
- Mortgage payment (monthly equivalent)
- $7,253
- Property tax
- $602
- Condo / maintenance fees
- $0
- Heating
- $0
- Estimated monthly cost
- $7,855
Add your own property tax, condo fees, and heating on the left for a sharper total.
One-time closing costs
- Ontario land transfer tax
- $30,455
- Estimated closing costs
- $30,455
Plus your down payment of $339,800. Legal fees, title insurance, and adjustments are extra and vary by deal.
Mortgage stress test
Lenders qualify you at the greater of your rate plus 2% or 5.25%. You do not pay this rate. It just shows you could still handle payments if rates rose, so aim to stay comfortable at this higher number.
Over the full 25 years
At the end of your 5-year term
- Total paid over the term
- $435,192
- Principal paid down
- $173,094
- Interest paid
- $262,097
- Balance remaining
- $1,186,106
Talk to Team Asgarian about your options
Rates and programs change often. We will connect you with a trusted mortgage professional and build a plan that fits your budget and goals.
Estimates only, not a mortgage quote or pre-approval. Figures use Canadian semi-annual compounding, current minimum down-payment rules, CMHC premium tiers, and Ontario (plus Toronto, when selected) land transfer tax. Actual rates, taxes, insurance, and closing costs vary by lender and property. Confirm every number with your mortgage professional.
Investor snapshot
Thinking of this home as an investment? We will pull real comparable rents and run the full numbers with you.
Talk about the numbersEstimates only. Rent is modelled on above-grade size and local norms, so a finished basement or second suite (a separate entrance often means one) can push real rent well above this. Taxes, fees, and vacancy vary by property, and cap rate is before financing. A starting point, not a final number, let us run the real ones with you.
Helpful resources
All information deemed reliable but not guaranteed. For personal, non-commercial use only. Listing courtesy of RE/MAX REALTRON REALTY INC.. MLS®/PropTx.