23 Constantia Street, Markham, ON
Middlefield, Markham · MLS® N13697394
About this home
In short
- Welcome to 23 Constantia Street - Fully Upgraded Family Home with 2-Bed Legal Basement Apartment in Prime Middlefield.
- From the moment you walk in, you'll notice the quality and care-this immaculate residence offers modern, comfortable living with over $100K in upgrades throughout.
- Main level boasts an upgraded gourmet kitchen with quartz countertops, premium cabinetry, backsplash & high-end appliances, flowing seamlessly into spacious living...
- Upper level features 4 generously sized bedrooms including a primary retreat with upgraded ensuite , custom wardrobe and walk-in closet.
- Fully finished basement complete with a 2-Bedroom Apartment featuring separate entrance, upgraded kitchen, 2 washrooms, large windows, laminate flooring, and...
Welcome to 23 Constantia Street - Fully Upgraded Family Home with 2-Bed Legal Basement Apartment in Prime Middlefield! Welcome to a stunning, fully upgraded 4+2 bedroom, 5-washroom detached home in the highly sought-after Middlefield community of Markham. From the moment you walk in, you'll notice the quality and care-this immaculate residence offers modern, comfortable living with over $100K in upgrades throughout. Main level boasts an upgraded gourmet kitchen with quartz countertops, premium cabinetry, backsplash & high-end appliances, flowing seamlessly into spacious living and dining areas with pot lights and hardwood floors. Upper level features 4 generously sized bedrooms including a primary retreat with upgraded ensuite , custom wardrobe and walk-in closet. Fully upgraded washrooms throughout. Fully finished basement complete with a 2-Bedroom Apartment featuring separate entrance, upgraded kitchen, 2 washrooms, large windows, laminate flooring, and open-concept living - Perfect for extended family, rental income, or mortgage helper! Additional Highlights: Double Car Garage, upgraded light fixtures, pot lights throughout, large lot, no sidewalk. Prime location steps from schools, parks, transit, shoppingPlaza & more. Minutes to Markham Rd / Steeles Ave E, Hwy 407, Centennial GO & Markham GO. A rare opportunity to own a turn-key, income-generating home in one of Markham's best family neighborhoods!
Key facts
- Property type
- Detached, 2-Storey
- MLS®
- N13697394
- Bedrooms
- 4+2 (6 total)
- Bathrooms
- 5 (2 half)
- Size
- 2000-2500 sq ft
- Lot
- 32.82 × 116.99 ft
- Cross streets
- Middlefield And Highglen
- Parking
- 2 garage · 6 parking (attached)
- Basement
- Apartment, Separate Entrance
- Kitchens
- 2 (1 + 1)
- Heating
- Forced Air
- A/C
- Central Air
- Exterior
- Brick
- Foundation
- Concrete Block
- Roof
- Asphalt Shingle
- Sewer
- Sewer
- Property tax
- $6,134 / 2026
- Days on market
- 31
- Listing brokerage
- RE/MAX COMMUNITY REALTY INC.
Rooms
closet · window
window · 4 pc ensuite · walk-in closet(s)
combined w/dining · pot lights · window
pot lights · fireplace · hardwood floor
breakfast area · ceramic floor · quartz counter
combined w/living · pot lights · hardwood floor
closet · window
ceramic floor · combined w/kitchen · w/o to patio
closet · large window
Listed at $1,269,000 with no offer date. Homes here have been closing close to ask, so my read is $1.28M, typically $1.20M to $1.34M. Comparable closings on their own put this home around $1.30M, which supports the ask, so this is a firm read.
Total price vs nearby homes. Likely closing about $1.28M, from 14 recent closings in this pocket.
The market behind the math:
About 1.5 months of inventory: 7 detached homes for sale in the area against 14 closings in the last 90 days. Under two months favours sellers, over four favours buyers.
Price per square foot: this home lists at $564/sqft against an area asking average of $548/sqft. Size and $/sqft both feed the estimate above.
- Separate-entrance basement apartment features. A finished 2 bed basement apartment with a separate entrance and a second kitchen. A self-contained space for extended family, guests or potential income. Basements do rent in Middlefield: 61 of the 163 detached leases here lately were basement units, around $1,700 a month. That makes the suite real income, and comparable-sales math under-prices it, so read the estimate as a floor. Second-suite retrofit status is not verified. A buyer intending to rent should confirm requirements with the City of Markham.
How this estimate is builtthe short version
This figure comes from a model built on about 44,000 recent GTA sales. It weighs this home’s tax assessment, size, age, location and features against what homes like it actually sold for, including sales in this neighbourhood.
It never sees the asking price. The 14 most comparable recent sales on their own, adjusted for size, beds, baths and lot, point to about $1.22M. Condition and finishes remain an in-person call.
What the listing highlights5 points to weigh
Claims from the listing, worth confirming in person. I can book you a private showing.
- Separate entrance / basement suite: rental or in-law income potential, if it is legally registered and retrofit-compliant. Income potential
- Finished basement: added living space, worth checking ceiling height and that the work was permitted. Value driver
- Upscale kitchen: a genuine value driver, verify the appliances, stone, and finishes in person. Value driver
- Primary suite: a key comfort and resale feature. Lifestyle
- Open-concept layout: modern, sought-after flow. Lifestyle
Schools & getting aroundcatchment and transit
The assigned public school is Coppard Glen PS. EQAO is only one input, and families here also look at French Immersion, boundary, and private options, the full breakdown is below.
Read this with carewhy it’s an estimate, not an appraisal
There were not many closely comparable homes right in Middlefield, so I widened the search to the surrounding area.
Based on 14 comparable homes that sold in Middlefield over the past two years, from 111 closings there.
The closest active listings by size, beds, and price, so you can see what this home is up against.
Per square foot, these ask about $563/sqft; this home lists at $564/sqft. Size is part of the price story, not just the sticker.
The 3 closest active listings nearby.
See all comparable homesNeighbourhood & location
Middlefield, Markham, ON
Enter a workplace or destination and we’ll show the door-to-door time by car, transit and bike.
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.
Also nearby: 12 more schools within 2.5 km
Not the assigned catchment: schools a family here could reach, with EQAO results where published.
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
Conventional (20%+ down). Best insured 5-year fixed 4.24% via Ratehub.ca (as of September 18, 2026); conventional rates run a little higher.
Mortgage amount $1,015,200 · 4.39% over 25 years
Total monthly cost
- Mortgage payment (monthly equivalent)
- $5,557
- Property tax
- $511
- Condo / maintenance fees
- $0
- Heating
- $0
- Estimated monthly cost
- $6,068
Add your own property tax, condo fees, and heating on the left for a sharper total.
One-time closing costs
- Ontario land transfer tax
- $21,855
- Estimated closing costs
- $21,855
Plus your down payment of $253,800. 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
- $333,417
- Principal paid down
- $125,522
- Interest paid
- $207,895
- Balance remaining
- $889,678
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
The suite is real income here: basements rent in Middlefield (61 of 163 recent detached leases were basement units, around $1,700 a month). The figure above is the whole house on one lease; rented as two units, the suite alone brings about $1,700 a month on top of the upper floors. Permitted use is worth confirming with the city.
Thinking of this home as an investment? We will pull real comparable rents and run the full numbers with you.
Talk about the numbersThe last 29 whole-home leases in Middlefield signed at a median of $3,456 a month; adjusted to this home for size, beds and baths, and for where rents stood the month each signed, that is $3,827. The gross yield above is on the asking price, before taxes and upkeep; the cap rate is after them. A finished basement or second suite can push real rent above it. Taxes, fees, and vacancy vary by property, and cap rate is before financing.
Helpful resources
All information deemed reliable but not guaranteed. For personal, non-commercial use only. Listing courtesy of RE/MAX COMMUNITY REALTY INC.. MLS®/PropTx.