509 Douglas St is a multiplex in Sault Ste Marie, listed for $444,900. It has 1500-2000 sq ft of living space.
1This solid Triplex sitting on a double lot is a turn key; an extremely smart investment.
2Mainfloor 3 Bedroom is spacious and has amazing tenants!
3This unit has a generous eat in kitchen, access to basement laundry, large living room, full bathroom with updated tile tub surround & a huge front porch!
Welcome to 509 Douglas Street! This solid Triplex sitting on a double lot is a turn key; an extremely smart investment. Live in one unit and have the other 2 pay the mortgage (build a big garage) OR continue to rent all 3 units and fill the 2 vacant ones with todays market rent. Mainfloor 3 Bedroom is spacious and has amazing tenants! This unit has a generous eat in kitchen, access to basement laundry, large living room, full bathroom with updated tile tub surround & a huge front porch! Secure interior access for the 2 upper 1 Bedroom units both bright and airy and very functional. Natural Gas Boiler (2013) with separate zoning (set your own heat in each), 3 hot water tanks, separate meters, laundry in basement with exterior access, large double lot with storage shed for the lawnmower and blower. Outside features architectural shingles (2015), vinyl siding, dual pane vinyl windows, a rear deck, in an excellent West end location! Call today for your private showing.
works out to roughly $297 per square foot. Chat with Zara if you'd like a deeper read on whether this multiplex fits your budget and timing.
Inside 509 Douglas St
Every detail from the listing, in one place.
Type
Multiplex
Living space
1500-2000 sq ftas stated on the listing
Basement
Full
Features & systems
Interior
Basement
Full
Lot & land
Lot size (sqft)
0
Listing & possession
Property class
Multiplex
509 Douglas St Price & Sale History
Earlier listings of this property, list-price changes, and the most recent annual property tax on the listing.
For saleListedThis listingMLS® X13888590$444,900
Sourced from MLS®. Includes earlier listings of this property on record.
What's it worth?
How 509 Douglas St Compares to the Sault Ste Marie 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
$2,186
/mo
based on the purchase price of $444,900
$88,980 cash
$355,920 financed
$299,778 total interest
Principal54%$355,920
Interest46%$299,778
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.
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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 Sault Ste Marie
Other homes for sale in Sault Ste Marie around $445K.
Average days on market24Homes sold in about 24 days on average.
Sale-to-list ratio95.3%On average, homes sold below asking.
Active listings366Homes for sale here right now.
Based on 8 sales from Jul 15 – Oct 13, 2026. Aggregate MLS® figures for closed sales; individual sold prices are shown only to signed-in members.
Questions About 509 Douglas St
How much is 509 Douglas St listed for?
509 Douglas St is listed at $444,900 (MLS® X13888590). Summitly updates the price as soon as the MLS® record changes.
Is $444,900 a good price for 509 Douglas St?
Summitly rates it Excellent Deal: the asking price is 10% or more below Zara's estimate, an estimate built from recent sales in Sault Ste Marie. 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 509 Douglas St changed?
No — 509 Douglas St is still listed at its original asking price of $444,900.
How many bedrooms and bathrooms does 509 Douglas St have?
509 Douglas St has about 1,500–2,000 square feet of living space. The listing doesn't publish a bedroom or bathroom count. It is a multiplex in Sault Ste Marie.
How much would the monthly mortgage be on 509 Douglas St?
About $2,186 a month — principal and interest on $444,900 with 20% down ($88,980), 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.
How does 509 Douglas St compare with other homes in Sault Ste Marie?
Its asking price of $444,900 is about 29% above the median sold price in Sault Ste Marie over the last 90 days, $345,667, across 8 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 509 Douglas St been sold before?
Summitly has no earlier MLS® sale or lease of 509 Douglas St on record from the last two years. Older records aren't shown under TRREB rules.
Where is 509 Douglas St?
509 Douglas St is in Sault Ste Marie, ON. Schools, transit, parks and shops nearby are under Location & lifestyle on this page.
How long has 509 Douglas St been on the market?
4 days — 509 Douglas St was listed on October 8, 2026.
What is the price per square foot of 509 Douglas St?
About $222 to $297 per square foot: the asking price of $444,900 over the 1,500–2,000 sq ft the listing gives as its size range.
Does 509 Douglas St have a basement, and is it finished?
