Houses for Sale in St. Clair ON Under $300K

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Are you looking for houses under $300k for sale in St. Clair ON? Square Yards Canada offers a wide selection of properties that cater to various budgets in St. Clair. Browse through detailed listings with HD images and guides to find the ideal property that fits your budget and preferences in St. Clair. Whether you’re looking to buy houses under under $300k in St. Clair 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. Clair houses for sale under under $300k, including freehold homes, condos, and commercial properties.

Last Updated: September 27, 2026

31 Photos

205 Fane Street, Lambton, ON , MLS #X13562056 , Image - 1

Unit-2B, 205 Fane Street St. Clair, Lambton, ON MLS® X13562056

Residential Condo & Other (Condo Townhouse)

$249000.0

2 Beds
2 Baths
900-999 sq-ft

2 BEDROOM, 1.5 BATHROOM TWO STOREY TOWNHOUSE CONDO LOCATED AT 2B-205 FANE ST. IN CORUNNA. CONVENIENTLY LOCATED CLOSE TO THE ST. CLAIR RIVER, SHOPPING,

28 Photos

348 Cameron Street, Lambton, ON , MLS #X13792350 , Image - 1

Unit-69, 348 Cameron Street St. Clair, Lambton, ON MLS® X13792350

Residential Condo & Other (Condo Townhouse)

$224900.0

3 Beds
2 Baths
800-899 sq-ft

Rare corner end-unit townhome! Perfect for first-time homebuyers, investors, or anyone looking to upsize into a fantastic, highly walkable neighbourho

6 Photos

4656 Tyler Drive, Lambton, ON , MLS #X13505974 , Image - 1

4656 Tyler Drive St. Clair, Lambton, ON MLS® X13505974

Residential Freehold (Vacant Land)

$199500.0

Welcome to St. Clair Marina Estates subdivision! Lot is Fully Serviced for building your Dream Home! Close to Port Lambton and quick access to the St.

16 Photos

1583 COUNCILLORS Street, Lambton, ON , MLS #X12955252 , Image - 1

1583 COUNCILLORS Street St. Clair, Lambton, ON MLS® X12955252

Residential Freehold (Vacant Land)

$115000.0

*SERVICED BUILDING LOT!* Build your future in the welcoming community of Courtright. This 50 x 93 ft vacant lot offers a great opportunity to design a