Nestled along the banks of the picturesque Thames River, this charming 1.5-storey home offers a rare opportunity to enjoy peaceful waterfront living right in the heart of St. Marys. Wake up to tranquil river views, unwind to the sounds of nature, and enjoy a backyard setting that feels like your own private retreat. Inside, the home blends warmth and character with comfortable living spaces designed for everyday life. The inviting main floor offers a bright and functional layout, while the upper level provides cozy bedrooms full of charm. Conveniently located just minutes from downtown St. Marys, parks, schools, local shops, restaurants, and walking trails, you'll enjoy the perfect balance of small-town charm and everyday convenience. Whether you're searching for your first home, a peaceful place to downsize, or a unique property with an unbeatable setting, this riverside gem is one you won't want to miss.
3 bedrooms, 1 bathroom, about 1,500 sq ft, works out to roughly $300 per square foot. Chat with Zara if you'd like a deeper read on whether this detached fits your budget and timing.
Inside 237 Thomas St
Every detail from the listing, in one place.
Type
Detached
Style
1 1/2 Storey
Living space
1500-2000 sq ftas stated on the listing
Parking
4 spaces
Basement
Walk-Out
Features & systems
Parking & garage
Parking spaces
4
Interior
Basement
Walk-Out
Lot & land
Lot size (sqft)
0
Listing & possession
Property style
1 1/2 Storey
Property class
Detached
237 Thomas St Price & Sale History
Earlier listings of this property, list-price changes, and the most recent annual property tax on the listing.
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
$2,210
/mo
based on the purchase price of $449,900
$89,980 cash
$359,920 financed
$303,147 total interest
Principal54%$359,920
Interest46%$303,147
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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Similar homes for sale nearby in St. Marys
Other 2–4 bed homes for sale in St. Marys around $450K.
Average days on market69Homes sold in about 69 days on average.
Sale-to-list ratio97.5%On average, homes sold below asking.
Active listings64Homes for sale here right now.
Median vs prior 90 days+6.3%Compared with Apr 23 – Jul 22, 2026: prices up.
Based on 45 sales from Jul 22 – Oct 20, 2026 (35 in the prior 90 days). Aggregate MLS® figures for closed sales; individual sold prices are shown only to signed-in members.
Questions About 237 Thomas St
How much is 237 Thomas St listed for?
237 Thomas St is listed at $449,900 (MLS® X13621900). Summitly updates the price as soon as the MLS® record changes.
Is $449,900 a good price for 237 Thomas St?
Summitly rates it Excellent Deal: the asking price is 10% or more below Zara's estimate, an estimate built from recent sales in St. Marys. 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 237 Thomas St changed?
Yes — it was first listed at $499,900 and is now $449,900, a drop of $50,000 (10.0%).
How many bedrooms and bathrooms does 237 Thomas St have?
237 Thomas St has 3 bedrooms and 1 bathroom, with about 1,500–2,000 square feet of living space. It is a detached home in St. Marys.
How much would the monthly mortgage be on 237 Thomas St?
About $2,210 a month — principal and interest on $449,900 with 20% down ($89,980), 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 237 Thomas St compare with other homes in St. Marys?
Its asking price of $449,900 is about 22% below the median sold price in St. Marys over the last 90 days, $574,000, across 45 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 237 Thomas St been sold before?
Summitly has no earlier MLS® sale or lease of 237 Thomas St on record from the last two years. Older records aren't shown under TRREB rules.
Where is 237 Thomas St?
237 Thomas St is in St. Marys, ON. Schools, transit, parks and shops nearby are under Location & lifestyle on this page.
How long has 237 Thomas St been on the market?
82 days — 237 Thomas St was listed on July 30, 2026.
What is the price per square foot of 237 Thomas St?
About $225 to $300 per square foot: the asking price of $449,900 over the 1,500–2,000 sq ft the listing gives as its size range.
Does 237 Thomas St have parking or a garage?
Yes — the listing gives 4 parking spaces.
Does 237 Thomas St have a basement, and is it finished?
