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Houses for Sale in St. Marys ON Under $500K

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Are you looking for houses under $500k for sale in St. Marys ON? Square Yards Canada offers a wide selection of properties that cater to various budgets in St. Marys. Browse through detailed listings with HD images and guides to find the ideal property that fits your budget and preferences in St. Marys. Whether you’re looking to buy houses under under $500k in St. Marys ON for residential living or as investment opportunities, our listings allow you to filter by amenities, property age, number of bedrooms and much more. Explore a diverse range of St. Marys houses for sale under under $500k, including freehold homes, condos, and commercial properties.

Last Updated: June 28, 2026

18 Photos

86 Salina Street N, Perth, ON , MLS #X12199738 , Image - 1

86 Salina Street N St. Marys, Perth, ON MLS® X12199738

Residential Freehold (Detached)

$425000.0

Price drop by 10.5%

3 Beds
1 Baths
1100-1500 sq-ft

Opportunity knocks! Situated on an expansive 116.7' x 118' lot, this property offers excellent potential for development in a mature and sought-after

7 Photos

428 Queen Street W, Perth, ON , MLS #X13153810 , Image - 1

Unit-3, 428 Queen Street W St. Marys, Perth, ON MLS® X13153810

Residential Condo & Other (Condo Townhouse)

$329900.0

1 Beds
1 Baths
700-799 sq-ft

Welcome to effortless condominium living in this brand new, never-before-lived-in unit offering the perfect blend of modern finishes, energy efficienc

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10 Photos

306 Douro Street, Perth, ON , MLS #X12382602 , Image - 1

306 Douro Street Stratford, Perth, ON MLS® X12382602

Residential Freehold (Duplex)

$499000.0

Price drop by 2.1%

4 Beds
2 Baths
1500-2000 sq-ft

This all brick, two-storey, upper/lower duplex has been owned by the same landlord for a long, long time, but he's no longer living in Stratford. The

24 Photos

583 Barber Avenue N, Perth, ON , MLS #X13164618 , Image - 1

Unit-3, 583 Barber Avenue N Listowel, North Perth, Perth, ON MLS® X13164618

Residential Condo & Other (Condo Apartment)

$219000.0

1 Beds
1 Baths
500-599 sq-ft

Investors First Time Home Buyers!!Or Is It Time To Downsize? This Well Maintained Beauty Could Be Yours! It Will Go Fast So Hurry!!!Great Area Surroun

39 Photos

3192 Vivian Line 37 Line

Unit-7, 3192 Vivian Line 37 Line Stratford, Perth, ON MLS® X13022670

Residential Condo & Other (Condo Townhouse)

$469900.0

Price drop by 6.0%

2 Beds
2 Baths
1200-1399 sq-ft

Welcome to 3192 Vivian Line in beautiful Stratford! This stunning, open-concept two-storey condo loft features two bedrooms and two bathrooms, offerin

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Houses for Sale in St. Marys ON Under $500K

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