3861 Promontory Crescent, Mississauga, ON
Erin Mills, Mississauga · MLS® W13798412
About this home
In short
- Exceptionally well-appointed 4+1 bedroom, 4-bathroom home in sought-after Erin Mills, ideally positioned on a quiet cul-de-sac facing the Credit River ravine.
- The main level showcases a beautifully renovated kitchen with custom cabinetry, generous counter space, dedicated eat-in area and walkout to the lush backyard.
- Spacious and versatile principal rooms include separate living and dining rooms, while the inviting family room features a beautiful linear electric fireplace and...
- The upper level offers four generously sized bedrooms, highlighted by a spacious primary retreat with a beautifully renovated ensuite featuring a glass-enclosed...
- Ideally located close to the Riverwood Conservancy, extensive trails, parks, schools, UTM, shopping including Erin Mills Town Centre and everyday amenities, with...
Exceptionally well-appointed 4+1 bedroom, 4-bathroom home in sought-after Erin Mills, ideally positioned on a quiet cul-de-sac facing the Credit River ravine. The main level showcases a beautifully renovated kitchen with custom cabinetry, generous counter space, dedicated eat-in area and walkout to the lush backyard. Spacious and versatile principal rooms include separate living and dining rooms, while the inviting family room features a beautiful linear electric fireplace and walkout to the private backyard, creating an ideal setting for both everyday living and entertaining. The upper level offers four generously sized bedrooms, highlighted by a spacious primary retreat with a beautifully renovated ensuite featuring a glass-enclosed shower, soaker tub and separate water closet. The finished lower level extends the living space with a rec room with gas fireplace, a fifth bedroom and full bathroom, providing excellent flexibility for guests, teenagers or extended family. The private, professionally landscaped backyard offers a peaceful outdoor setting with room to relax and entertain. Ideally located close to the Riverwood Conservancy, extensive trails, parks, schools, UTM, shopping including Erin Mills Town Centre and everyday amenities, with convenient access to the 403, QEW and GO Stations for an easy commute. Don't miss this opportunity!
Key facts
- Property type
- Detached, 2-Storey
- MLS®
- W13798412
- Bedrooms
- 4+1 (5 total)
- Bathrooms
- 4 (1 half)
- Size
- 2500-3000 sq ft
- Lot
- 80.05 × 110.01 ft
- Cross streets
- Promontory Rd and Burnhamthorpe Rd W
- Parking
- 2 garage · 6 parking (attached)
- Basement
- Full, Finished
- Heating
- Forced Air
- A/C
- Central Air
- Exterior
- Brick
- Foundation
- Poured Concrete
- Roof
- Asphalt Shingle
- Sewer
- Sewer
- Property tax
- $10,651 / 2026
- Days on market
- 4
- Listing brokerage
- ROYAL LEPAGE REAL ESTATE SERVICES PHINNEY REAL EST
Rooms
hardwood floor · w/o to patio
large closet · large window · parquet
crown moulding · separate room · hardwood floor
large closet · large window · parquet
fireplace · wet bar
stainless steel appl · stone counters · renovated
large closet · large window · parquet
fireplace · crown moulding · hardwood floor
5 pc ensuite · walk-in closet(s) · overlooks backyard
Closet
crown moulding · separate room · hardwood floor
Listed at $1,735,000. Going by how homes in Erin Mills and the wider GTA have actually closed against their asking prices (about 98%, 39 local closings in 90 days), the likely sale price is near $1.71M, if it sells. A realistic range is $1.60M to $1.92M.
Independent value check: $1.68M. Without looking at the asking price, our model values the home itself about 3% below the ask (homes like it typically land between $1.57M and $1.76M).
Why $1.68M. The typical detached home sold in Erin Mills over the past year went for about $1.21M (162 sales). What sets this one apart:
- ▲ Raises it stronglyIts tax bill, which follows the city's own assessment, is $10,651 a year; the typical home sold here pays about $7,300.
- ▲ Raises itThe listing describes it as fully renovated or newly built.
- ▲ Raises it slightlyIt is 2,500 to 3,000 sq ft; the typical home sold here is 2,000 to 2,500.
Total price vs nearby homes. Likely closing about $1.71M, from 39 recent closings in this pocket.
The market behind the math:
About 2.2 months of inventory: 28 detached homes for sale in the area against 39 closings in the last 90 days. Under two months favours sellers, over four favours buyers.
Price per square foot: this home lists at $631/sqft against an area asking average of $587/sqft.
- Ravine / green setting. This home is described as backing onto a ravine or green setting. A premium that comparable-sales math under-prices, so read the estimate as a floor.
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 39 most comparable recent sales on their own, adjusted for size, beds, baths and lot, point to about $1.69M. Condition and finishes remain an in-person call.
What the listing highlights4 points to weigh
Claims from the listing, worth confirming in person. I can book you a private showing.
- Ravine lot: privacy and premium value, but confirm the buildable area and any conservation limits. Worth verifying
- Renovated / rebuilt: recent work can mean fewer upfront costs, worth confirming the scope, quality, and that permits were pulled. Value driver
- Premium lot / gardens: lot size and privacy hold value and cannot be changed, verify frontage, depth, and any easements. Value driver
- Primary suite: a key comfort and resale feature. Lifestyle
Based on 39 comparable homes that sold in Erin Mills over the past two years, from 324 closings there.
For sale
For sale
For sale
For sale
For sale
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For sale
For saleThe closest active listings by size, beds, and price, so you can see what this home is up against.
Per square foot, these ask about $610/sqft; this home lists at $631/sqft. Size is part of the price story, not just the sticker.
The 5 closest of 8 active listings nearby.
See all comparable homesNeighbourhood & location
Erin Mills, Mississauga, 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). Mississauga.
Get the full neighbourhood report (schools, parks, transit & safety) →
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 4.24% via Ratehub.ca (as of September 21, 2026); conventional rates run a little higher.
Mortgage amount $1,388,000 · 4.39% over 25 years
Total monthly cost
- Mortgage payment (monthly equivalent)
- $7,598
- Property tax
- $888
- Condo / maintenance fees
- $0
- Heating
- $0
- Estimated monthly cost
- $8,485
Add your own property tax, condo fees, and heating on the left for a sharper total.
One-time closing costs
- Ontario land transfer tax
- $31,175
- Estimated closing costs
- $31,175
Plus your down payment of $347,000. 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
- $455,853
- Principal paid down
- $171,616
- Interest paid
- $284,237
- Balance remaining
- $1,216,384
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 numbersThe last 31 whole-home leases in Erin Mills signed at a median of $4,419 a month; adjusted to this home for size, beds and baths, and for where rents stood the month each signed, that is $4,947. 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 ROYAL LEPAGE REAL ESTATE SERVICES PHINNEY REAL EST. MLS®/PropTx.