100 Gas Lamp Lane, Markham, ON
Cornell, Markham · MLS® N13674920
About this home
In short
- Welcome to 100 Gas Lamp Lane in Markham's sought-after Cornell community.
- This immaculate 4- bedroom, 3-bathroom, 1962 sf, semi-detached home boasts low-maintenance curb appeal and a sun-filled, practical layout tailored for young families...
- Enjoy open-concept living spaces, generous bedrooms ideal for kids or remote work, and low-upkeep exterior grounds.
- Commuting is seamless with quick access to the Cornell Bus Terminal, Mount Joy GO Station, Hwy 407, and Hwy 404.
Welcome to 100 Gas Lamp Lane in Markham's sought-after Cornell community! This immaculate 4- bedroom, 3-bathroom, 1962 sf, semi-detached home boasts low-maintenance curb appeal and a sun-filled, practical layout tailored for young families or savvy investors. Enjoy open-concept living spaces, generous bedrooms ideal for kids or remote work, and low-upkeep exterior grounds. Located steps from top-rated schools (Bill Hogarth SS, St. Joseph, Little Rouge PS), the state-of-the-art Cornell Community Centre & Library, playgrounds, and Markham Stouffville Hospital. Commuting is seamless with quick access to the Cornell Bus Terminal, Mount Joy GO Station, Hwy 407, and Hwy 404. Moments to local cafes, dining, and Markville Mall. A turn-key home offering incredible convenience, strong rental appeal, and long-term value!
Key facts
- Property type
- Semi-Detached, 2-Storey
- MLS®
- N13674920
- Bedrooms
- 4
- Bathrooms
- 3 (1 half)
- Size
- 1500-2000 sq ft
- Lot
- 28.23 × 81.8 ft
- Cross streets
- 16th Ave & Ninth Line
- Parking
- 1 garage · 2 parking (detached)
- Driveway
- Private
- Basement
- Unfinished
- Heating
- Forced Air
- A/C
- Central Air
- Exterior
- Brick
- Foundation
- Brick, Concrete
- Roof
- Asphalt Shingle
- Sewer
- Sewer
- Property tax
- $4,482 / 2025
- Days on market
- 66
- Listing brokerage
- CENTURY 21 ATRIA REALTY INC.
Rooms
large window · walk-in closet(s) · ensuite bath
Large Window
large window · closet
breakfast area · w/o to garage · tile floor
large window · combined w/kitchen
large window · closet
large window · closet
Listed at $1,128,000. Going by how homes in Cornell and the wider GTA have actually closed against their asking prices (about 98%, 13 local closings in 90 days), the likely sale price is near $1.11M, if it sells. A realistic range is $1.04M to $1.25M.
Independent value check: $908K. Without looking at the asking price, our model values the home itself about 19% below the ask (homes like it typically land between $851K and $952K).
Why $908K. The typical semi-detached home sold in Cornell over the past year went for about $974K (38 sales). What sets this one apart:
- ▲ Raises it slightlyIts tax bill, which follows the city's own assessment, is $4,482 a year; the typical home sold here pays about $4,300.
Longer on the market than typical. 66 days on the market against about 41 for homes like it here, and asking 24% above where comparable closings put it.
Total price vs nearby homes. Likely closing about $1.11M, from 13 recent closings in this pocket.
The market behind the math:
About 1.2 months of inventory: 5 semi-detached homes for sale in the area against 13 closings in the last 90 days. Under two months favours sellers, over four favours buyers.
Price per square foot: this home lists at $645/sqft against an area asking average of $515/sqft.
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 13 most comparable recent sales on their own, adjusted for size, beds, baths and lot, point to about $885K. Condition and finishes remain an in-person call.
What the listing highlights1 point to weigh
Claims from the listing, worth confirming in person. I can book you a private showing.
- Open-concept layout: modern, sought-after flow. Lifestyle
Based on 6 homes sold on this street over the past two years, from 77 closings in Cornell.
Nothing closely matching this home is listed nearby right now, so these are the nearest semi-detached listings on the market. Homes like this one have recently closed around $908K, which is where my estimate comes from.
Per square foot, these ask about $515/sqft; this home lists at $645/sqft. Size is part of the price story, not just the sticker.
The 5 closest active listings nearby.
See all comparable homesSold price trend
Median sold price for semi-detached homes in Markham: $1.00M in September 2026, down 5% from a year ago, on 173 closings in 12 months.
Line: median sold price, each month averaged with its neighbours and weighted by closings. Bars: closings that month. Markham as a whole: the neighbourhood alone has too few closings for a line of its own.
Month by month
| Month | Median sold | Closings |
|---|---|---|
| October 2025 | $1.05M | 19 |
| November 2025 | $1.06M | 14 |
| December 2025 | $1.04M | 7 |
| January 2026 | $1.04M | 8 |
| February 2026 | $1.06M | 5 |
| March 2026 | $1.04M | 11 |
| April 2026 | $1.08M | 16 |
| May 2026 | $1.06M | 19 |
| June 2026 | $1.04M | 22 |
| July 2026 | $1.02M | 17 |
| August 2026 | $945K | 15 |
| September 2026 | $1.00M | 20 |
Neighbourhood & location
Cornell, 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) →
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 4.34% via Ratehub.ca (as of October 20, 2026); conventional rates run a little higher.
Mortgage amount $902,400 · 4.49% over 25 years
Total monthly cost
- Mortgage payment (monthly equivalent)
- $4,990
- Property tax
- $374
- Condo / maintenance fees
- $0
- Heating
- $0
- Estimated monthly cost
- $5,363
Add your own property tax, condo fees, and heating on the left for a sharper total.
One-time closing costs
- Ontario land transfer tax
- $19,035
- Estimated closing costs
- $19,035
Plus your down payment of $225,600. 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
- $299,371
- Principal paid down
- $110,257
- Interest paid
- $189,115
- Balance remaining
- $792,143
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 20 whole-home leases in Cornell signed at a median of $3,249 a month; adjusted to this home for size, beds and baths, and for where rents stood the month each signed, that is $3,298. 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 CENTURY 21 ATRIA REALTY INC.. MLS®/PropTx.