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Lots & Land in Markham
About 313 Helen Avenue
Perfect Residential Infill Redevelopment Opportunity for Townhouse or Single Family Homes. +203 ft Frontage and backing onto municipal parkland. The property is located in the attractive South Unionville neighborhood featuring in-demand schools and abundant park spaces. Markham official plan allows for Singles, Semi-detached, Townhouse or small multi-plex built form.
Markham land priced at $3,250,000 — book a tour to see if it fits your search.
Inside 313 Helen Ave
Every detail from the listing, in one place.
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Lot & land
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Listing & possession
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Land
313 Helen Ave Price & Sale History
Earlier listings of this property, list-price changes, and the most recent annual property tax on the listing.
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.
Average days on market31Homes sold in about 31 days on average.
Sale-to-list ratio99.3%On average, homes sold below asking.
Active listings1,519Homes for sale here right now.
Median vs prior 90 days+1.4%Compared with May 8 – Aug 6, 2026: prices up.
Based on 1,259 sales from Aug 6 – Nov 4, 2026 (871 in the prior 90 days). Aggregate MLS® figures for closed sales; individual sold prices are shown only to signed-in members.
313 Helen Ave is listed at $3,250,000 (MLS® N12448683). Summitly updates the price as soon as the MLS® record changes.
Has the price of 313 Helen Ave changed?
Yes — it was first listed at $3,950,000 and is now $3,250,000, a drop of $700,000 (17.7%).
How many bedrooms and bathrooms does 313 Helen Ave have?
The listing for 313 Helen Ave doesn't publish its bedroom and bathroom count. It is a lot in Markham.
Is 313 Helen Ave close to transit?
The nearest rapid-transit station is Unionville GO Station (Stouffville GO), about 1.6 km (about a 19-minute walk) in a straight line. Centennial GO Station is about 2.1 km, and Milliken GO Station is about 3.6 km. Distances are straight-line, not walking routes; check the transit agency for routes and schedules.
How does 313 Helen Ave compare with other homes in Markham?
Its asking price of $3,250,000 is about 197% above the median sold price in Markham over the last 90 days, $1,095,000, across 1,259 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 313 Helen Ave been sold before?
Summitly has no earlier MLS® sale or lease of 313 Helen Ave on record from the last two years. Older records aren't shown under TRREB rules.
Where is 313 Helen Ave?
313 Helen Ave is in Markham, ON. Schools, transit, parks and shops nearby are under Location & lifestyle on this page.
How long has 313 Helen Ave been on the market?
393 days — 313 Helen Ave was listed on October 7, 2025.
What is the land transfer tax on 313 Helen Ave?
About $67,725 in Ontario land transfer tax at the asking price of $3,250,000. First-time buyers can get up to $4,000 back. Legal fees and other closing costs are extra.
How do I book a viewing of 313 Helen Ave or make an offer?
Select "Book a viewing" on this page and pick a time. A licensed Coldwell Banker Summit Realty, Brokerage agent confirms it with the listing brokerage. When you're ready, your agent prepares the offer with you and submits it to the listing brokerage.
What is the property tax for 313 Helen Ave?
The listing for 313 Helen Ave doesn't publish the annual property tax. The property tax calculator linked at the foot of this page gives an estimate for Markham.
When was 313 Helen Ave built?
The listing for 313 Helen Ave doesn't publish a year built. A Summitly agent can ask the listing brokerage for it.
