St. Catharines • Niagara Region
Detached Homes with In-Law Suite for Sale in St. Catharines, Ontario
Explore detached homes featuring an in-law suite for sale in St. Catharines, Ontario. This page updates as new listings come on the market, so you can be confident you're seeing what's available right now.
St. Catharines is the largest city in Niagara — a full mix of downtown lofts, Port Dalhousie waterfront, and family neighbourhoods. If you'd like a deeper look — recent sale comparables, neighbourhood notes, or a private tour — the Davids & DeLaat team lives and works in Niagara every day and is happy to help.
Available detached homes in St. Catharines
View all St. Catharines listings →
For SaleVirtual tourSt. Catharines
$599,000
18 Coventry Street
For SaleSt. Catharines
$709,900
33 Meadowbrook Crescent
For SaleSt. Catharines
$998,888
105 Glenridge Avenue
For SaleSt. Catharines
$624,000
27 Andrea Drive
For SaleSt. Catharines
$750,000
10 Draper Drive
For SaleVirtual tourSt. Catharines
$899,000
255 Lakeshore Road
For SaleSt. Catharines
$549,900
276 Glenridge Avenue
For SaleSt. Catharines
$450,000
218 Lake Street
For SaleSt. Catharines
$765,000
3 Pacifico Place
For SaleSt. Catharines
$589,900
190 Carlton Street
For SaleSt. Catharines
$449,900
3 Melba Road
For SaleVirtual tourSt. Catharines
$299,900
22 Mildred Avenue
For SaleSt. Catharines
$469,000
560 Carlton Street
For SaleSt. Catharines
$849,900
50 Barbican Trail
For SaleSt. Catharines
$879,000
173 First Street Louth Street
For SaleVideo tourSt. Catharines
$2,450,000
10 Pawling Street
For SaleVirtual tourSt. Catharines
$774,888
25 Clearview Heights
For SaleSt. Catharines
$699,900
193 Ontario Street
For SaleSt. Catharines
$799,999
67 Bradley Street
For SaleSt. Catharines
$879,900
9 Nicholas Drive
For SaleSt. Catharines
$847,000
26 Fairington Crescent
For SaleSt. Catharines
$430,000
45 Powerview Avenue
For SaleSt. Catharines
$519,900
10 Parkwood Drive
For SaleSt. Catharines
$649,000
22 Dunblane Avenue
Related St. Catharines searches
Same search in nearby cities
Frequently asked questions
How often is the list of Detached Homes with In-Law Suite in St. Catharines updated?
Listings refresh automatically every hour from the live MLS feed. The newest detached homes for sale in St. Catharines appear at the top of this page.
What's the price range for detached homes in St. Catharines?
Pricing depends on neighbourhood, age and lot, but the Davids & DeLaat team tracks every Niagara detached home sale week-over-week and can give you a real-time read on the St. Catharines market.
How do I find detached homes with in-law suite in St. Catharines?
We pre-filter MLS listings for an in-law suite so you don't have to scroll through hundreds of irrelevant results. Save the page or get email alerts the moment a new one comes up.
Who are the best realtors for St. Catharines?
Davids & DeLaat is a top-producing Niagara real estate team that has helped hundreds of families buy and sell across St. Catharines and the wider Niagara Region. Get in touch to talk with a local agent.
Niagara real estate insights
Read the latest from the Davids & DeLaat blog to learn more about buying in St. Catharines and across Niagara.
Best Niagara Communities for Empty Nesters Who Still Want an Active Lifestyle
Best Niagara Communities for Empty Nesters Who Still Want an Active Lifestyle For many homeowners,……
Should You Sell First or Buy First in the Niagara Real Estate Market?
Should You Sell First or Buy First in the Niagara Real Estate Market? If you’re……
Buying in Niagara-on-the-Lake Outside the Historic Old Town
Buying in Niagara-on-the-Lake Outside the Historic Old Town Niagara-on-the-Lake is often associated with its postcard-worthy……
Talk to the #1 real estate team in St. Catharines
Have a question about homes for sale in St. Catharines? The Davids & DeLaat team works in the local market every day—and has for over 30 years—earning our reputation as the best real estate team in St. Catharines.
Tell us what type of properties you're looking for, and you will instantly get a personalized shortlist of St. Catharines properties based on your preferences. Plus, we'll notify you immediately every time a new listing hits the market that matches your criteria. Our real estate search feed is updated every 15 minutes, so you will be the first to know about the newest properties as soon as they hit the St. Catharines MLS.
Configure St. Catharines MLS Alerts
New matches sent straight to your inbox.