455 William Street, Niagara-on-the-Lake, ON
L0S 1J0
Listed September 10, 2026
About this property
Experience Refined Living In This Exquisite Estate Nestled In The Heart Of Historic Niagara On-The-Lake. Set On Nearly Three Acres Of Lush, Wooded Grounds, This Custom-Built Home Embraces A Modern French Country Aesthetic And Offers Unparalleled Privacy Just Moments From The Lake. Stroll To Nearby Boutiques, Acclaimed Restaurants, Theatres, And Golf Courses, And Enjoy The Vibrant Lifestyle That Makes This Community So Sought-After. Step Through An Impressive Stone Entryway Into A Grand Foyer Illuminated By Sparkling Crystal Chandeliers, Immediately Setting A Tone Of Sophistication. The Formal Living Room Invites Cozy Gatherings Around A Beautiful Cast Stone Gas Fireplace, While The Expansive Great Room Captivates With Vaulted Ceilings, Exposed Beams, And Abundant Natural Light Streaming Through Oversized Windows. A Charming Sunroom Offers A Peaceful Sanctuary For Morning Coffee, And The Upper Deck Complete With A Gas Fireplace Creates A Perfect Backdrop For Intimate Evenings Under The Stars. The Gourmet Kitchen Is Designed To Inspire Culinary Creativity, Featuring Granite Countertops, Premium Appliances Including A Sub-Zero Refrigerator And Wolf Induction Cooktop, And A Generous Walk-In Pantry. The Main-Level Primary Suite Provides A Serene Retreat With Spacious Walk-In Closets And A Spa-Inspired Ensuite Adorned With Luxurious Finishes. The Lower Level Reveals An Entertainers Paradise With A Family Lounge, Direct Access To A Pool Deck, Sauna, Hot Tub, And A Temperature-Controlled Wine Cellar. Four Additional Ensuite Bedrooms Ensure Comfort And Privacy For Family And Guests Alike. Impeccably Landscaped Gardens Surround The Estate, Offering A Stunning Outdoor Setting Ideal For Entertaining Or Quiet Relaxation. This Extraordinary Home Seamlessly Blends Timeless Elegance With Modern Comforts, Making It Truly One Of A Kind In Niagara-On-The-Lake
Features
Property Details
Listing
Property
Location
Taxes & Financials
Cost of Ownership Calculator
What it could cost each month to own 455 William Street — mortgage, property taxes, fees, insurance, utilities and upkeep. Change any number to match your situation.
Your mortgage
$1,099,800 · Minimum $1,099,800
Use the rate your lender or broker quotes you.
Monthly costs
From the listing (2025 tax bill).
Leave at $0 if there isn't one.
Typical for this kind of home.
Hydro, heating, water and sewer.
About 1% of the price a year, set aside.
One-time costs
A typical estimate — your lawyer will confirm.
Estimated monthly cost of ownership
$30,454/mo
About $365,448 a year
- $24,324
- $1,092
- Home insurance$125
- Utilities$330
- Maintenance & repairs$4,583
Cash needed to close
- Down payment (20%)
- $1,099,800
- Ontario land transfer tax
- $123,950
- Legal fees, title insurance & inspectionEstimate
- $2,500
- Total
- $1,226,250
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
455 William Street, Niagara-on-the-Lake, ON
Map data © GoogleOpen in Google Maps ↗
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Last Updated: September 10, 2026
Listing Office: CV Real Estate
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