Welcome to 42 Lilac Ave! Tucked into the heart of Aileen-Willowbrook, this south-facing 4 bedroom, 3.5 bath semi-detached home brings Tudor-inspired character to one of Thornhill's most established family neighbourhoods. Freshly painted in soft neutrals, the main floor feels bright, calm and ready for your next chapter. Upstairs, four generous bedrooms give everyone room to spread out, while three and a half baths keep busy mornings moving. The real showstopper is out back: no rear neighbours, just open green space with a backyard backing directly onto Green Lane Park. Morning coffee with a view, room for the kids to roam, and a quiet, leafy outlook in every season. Families will love the location within the catchment of some of York Region's most sought-after schools, including St. Rene Goupil-St. Luke Catholic Elementary, Willowbrook Public School, Thornlea Secondary and St. Robert Catholic High School. Commuters are minutes to Highways 404 and 407, with easy access to Bayview, Yonge, transit and Finch Station, plus nearby shopping, dining, parks and the Thornhill Community Centre and Library. A rare blend of character, space and setting. Welcome home.
4 bedrooms, 3 bathrooms, about 1,500 sq ft, works out to roughly $859 per square foot. Chat with Zara if you'd like a deeper read on whether this semi-detached fits your budget and timing.
Inside 42 Lilac Ave
Every detail from the listing, in one place.
Type
Semi-Detached
Style
2-Storey
Living space
1500-2000 sq ftas stated on the listing
Lot size
29.86 x 133.19 Feet
Parking
3 spacesYes garage
Basement
Finished
Features & systems
Parking & garage
Garage
Yes
Parking spaces
3
Interior
Basement
Finished
Lot & land
Lot dimensions
29.86 x 133.19 Feet
Lot size (sqft)
0
Listing & possession
Property style
2-Storey
Property class
Semi-Detached
42 Lilac Ave Price & Sale History
Earlier listings of this property, list-price changes, and the most recent annual property tax on the listing.
For saleListedThis listingMLS® N14115878$1,288,000
Sourced from MLS®. Includes earlier listings of this property on record.
What's it worth?
How 42 Lilac Ave Compares to the Markham Market
Zara compares it with recent sales of similar homes nearby. It's a guide, not an appraisal.
Independent mortgage broker · OAC · rates subject to change and underwritingMortgage Squad →
Referral disclosure: Summitly may refer you to Mortgage Squad Advisors, an affiliated mortgage partner. You are free to choose any lender or mortgage professional.
Monthly cost
Enter a rate to see the monthly cost
An estimate, not a quote. Utilities and insurance are extra.
Affordability calculator
Estimated monthly payment
$6,328
/mo
based on the purchase price of $1,288,000
$257,600 cash
$1,030,400 financed
$867,867 total interest
Principal54%$1,030,400
Interest46%$867,867
20% down · 25-yr amortization · 5.50% rate. Principal & interest only — taxes, condo fees, and insurance not included.
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Figures are Summitly estimates for illustration only — not from TRREB or the MLS® feed, and not a mortgage approval, appraisal, or financial advice.
Rental income potential
Est. monthly rent
low–high
Gross yield
rent × 12 ÷ price
Cap rate (est.)
net of tax + fees
Summitly AI estimate for discussion only — not from TRREB or the MLS® feed, and not an appraisal or investment advice. Yield and cap rate are derived from the estimated rent versus the asking price.
For homeowners nearby
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Mortgage financing is arranged through Mortgage Squad Advisors. Summitly is the technology platform that powers this site. Estimated values, AI insights, calculator results, and rental projections shown on this page are generated by Summitly and are not provided by, reviewed by, or sourced from TRREB, the MLS®, or the listing brokerage; they are not appraisals or opinions of value. The trademarks REALTOR®, REALTORS®, and the REALTOR® logo are controlled by the Canadian Real Estate Association (CREA) and identify real estate professionals who are members of CREA. The Coldwell Banker® name and logo are trademarks of Coldwell Banker Real Estate LLC.
Similar homes for sale nearby in Markham
Other 3–4 bed homes for sale in Markham around $1.3M.
Average days on market30Homes sold in about 30 days on average.
Sale-to-list ratio99.4%On average, homes sold below asking.
Active listings1,528Homes for sale here right now.
Median vs prior 90 days+3.0%Compared with Apr 29 – Jul 28, 2026: prices up.
Based on 1,334 sales from Jul 28 – Oct 26, 2026 (823 in the prior 90 days). Aggregate MLS® figures for closed sales; individual sold prices are shown only to signed-in members.
42 Lilac Ave is listed at $1,288,000 (MLS® N14115878). Summitly updates the price as soon as the MLS® record changes.
Is $1,288,000 a good price for 42 Lilac Ave?
Summitly rates it Well Above Market: the asking price is 15% or more above Zara's estimate, an estimate built from recent sales in Markham. The rating is an automated opinion, not an appraisal; "What's it worth?" on this page shows how it is worked out. See Zara's estimate
Has the price of 42 Lilac Ave changed?
No — 42 Lilac Ave is still listed at its original asking price of $1,288,000.
How many bedrooms and bathrooms does 42 Lilac Ave have?
42 Lilac Ave has 4 bedrooms and 3 bathrooms, with about 1,500–2,000 square feet of living space. It is a semi-detached home in Markham.
Is 42 Lilac Ave close to transit?
The nearest rapid-transit station is Langstaff GO Station (Richmond Hill GO), about 3.4 km in a straight line. Old Cummer GO Station is about 3.5 km. Distances are straight-line, not walking routes; check the transit agency for routes and schedules.
How much would the monthly mortgage be on 42 Lilac Ave?
About $6,328 a month — principal and interest on $1,288,000 with 20% down ($257,600), a 25-year amortization and an assumed 5.5% interest rate. The mortgage calculator on this page lets you change the down payment, amortization and rate.
Are there open houses at 42 Lilac Ave?
Yes — Saturday, October 31, 2:00 PM – 4:00 PM; Sunday, November 1, 2:00 PM – 4:00 PM. Open-house times come from the listing brokerage and can change, so check this page before you go, or book a private viewing.
How does 42 Lilac Ave compare with other homes in Markham?
Its asking price of $1,288,000 is about 18% above the median sold price in Markham over the last 90 days, $1,095,000, across 1,334 closed sales on the TRREB MLS®. A city median mixes every type and size of home, so the comparable sales on this page are the closer guide.
Has 42 Lilac Ave been sold before?
Summitly has no earlier MLS® sale or lease of 42 Lilac Ave on record from the last two years. Older records aren't shown under TRREB rules.
Where is 42 Lilac Ave?
42 Lilac Ave is in Markham, ON. Schools, transit, parks and shops nearby are under Location & lifestyle on this page.
How long has 42 Lilac Ave been on the market?
42 Lilac Ave was listed today (October 26, 2026).
What is the price per square foot of 42 Lilac Ave?
About $644 to $859 per square foot: the asking price of $1,288,000 over the 1,500–2,000 sq ft the listing gives as its size range.
