




300B Fourth Avenue Unit 509B, St. Catharines, ON
L2R 6P9
See all units in this building · 300b Fourth Avenue
Listed September 24, 2026
Property Tour
About this property
An exceptional opportunity to own an executive level residence in one of the region's most distinguished condominium communities. Immaculately maintained and occupied by its original owner (never leased), this top floor corner suite offers a rare combination of privacy, scale, and refinement. Spanning 1,257 square feet, the oversized layout is bathed in natural light and designed for effortless, elevated living. Corner unit = extra window! A gracious, elongated entry hall sets a sophisticated tone upon entry, offering both a large storage closet and a separate coat closet. The open concept kitchen and living area is anchored by stainless steel appliances and an upgraded waterfall edge (quartz) breakfast bar, creating a striking focal point. A private, south-facing balcony frames serene views toward the escarpment, offering quiet, peaceful surroundings and facing away from Fourth Avenue. Two generous-sized bedrooms, including a luxurious primary retreat with a walk in closet (1.5 x 1.7 m) and a spa inspired ensuite bath. Additional conveniences include an in suite laundry room with stacked front loading machines and an owned hot water heater. Included: two parking spaces, one exclusive underground space and one exterior space, along with abundant visitor parking for your guests. Residents enjoy premium amenities, including a well appointed fitness centre on level 2 and an impressive rooftop terrace complete with BBQ facilities and a stylish party room. The location is exceptional: just 600 metres from Niagara Health's Marotta Family Hospital, home to the renowned Walker Family Cancer Centre. With quick access to both the 406 and QEW, and surrounded by upscale retail, dining, grocery, and banking options, this address offers convenience without compromise.
Features
Property Details
Listing
Property
Condo / Building
Location
Taxes & Financials
Cost of Ownership Calculator
What it could cost each month to own 300B Fourth Avenue Unit 509B — mortgage, property taxes, fees, insurance, utilities and upkeep. Change any number to match your situation.
Your mortgage
$123,800 · Minimum $36,900
Use the rate your lender or broker quotes you.
Monthly costs
From the listing (2026 tax bill).
From the listing.
Typical for this kind of home.
Hydro and anything the condo fee doesn't cover.
About 0.25% of the price a year, set aside.
One-time costs
A typical estimate — your lawyer will confirm.
Estimated monthly cost of ownership
$4,204/mo
About $50,448 a year
- $2,738
- $439
- Condo / maintenance fees$743
- Home insurance$35
- Utilities$120
- Maintenance & repairs$129
Cash needed to close
- Down payment (20%)
- $123,800
- Ontario land transfer tax
- $8,855
- Legal fees, title insurance & inspectionEstimate
- $2,500
- Total
- $135,155
Estimates only — not a mortgage approval, quote or tax advice. Payments assume a fixed rate compounded semi-annually; minimum down payments, mortgage insurance and land transfer tax follow current CMHC and Ontario rules. Insurance, utilities and upkeep are typical figures for the area. Your lender, lawyer and insurer will confirm your exact costs.
Location & Walkability
300B Fourth Avenue Unit 509B, St. Catharines, ON
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Last Updated: September 24, 2026
Listing Office: RE/MAX NIAGARA REALTY LTD, BROKERAGE
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