$4,500,000
260 Ontario Street
Grand Bend, Lambton Shores, Ontario N0M1T0
For sale· Added
About this home
ONE OF A KIND WATERFRONT LUXURY | UNMATCHED SCALE & PRESTIGE | 9441 SQ FT OF PURE 2023 EXCELLENCE - Welcome to the most extraordinary custom waterfront estate ever offered in Grand Bend: a next-level masterpiece sitting on 3 acres w/ over 177 ft of peaceful Ausable River frontage. This is ultra-premium living for upper-tier buyers who demand a home that simply doesn't exist anywhere else. Inside this 9441 SQ FT architectural triumph, every inch is finished at a standard beyond premium. The showpiece is the 4-season sunroom, a full "home within a home," featuring a built-in swim spa pool, the largest custom skylights available, & exclusive roll-up screens unseen in any other residence in the region. With 6 bedrooms, including a magazine-worthy primary suite + dressing room, 6 jaw-dropping bathrooms, multiple offices/work-from-home zones, 2 laundries, & a dedicated fitness/art studio, the lifestyle offering is limitless. The chef's kitchen is fully loaded & seamlessly connects to a butler's pantry/2nd kitchen boasting a serving window to the sunroom - an entertainer's paradise! The craftsmanship is staggering: mahogany & poplar millwork, European archways, & centuries-old imported hardwood from a French castle custom-finished for the grand entry! The entire main & lower level floors are heated along with the garage, which is a car collector's dream offering 5 bay doors & floor space for 6 cars + storage. A double-deep RV/boat bay in the garage leads to a on site private boat launch adjacent to 50 ft of private dockage already in place + ample space to grow for larger boats or additional watercrafts. With the extremely private 3 acres, there is an abundance of land for a large hobbyist shop or development potential near the road for an additional lots. This is a one-of-one luxury estate in a class of its own in Grand Bend, Ontario's fastest growing year round beach community. Qualify with a Realtor to experience the full details of this once-in-a-lifetime offering.
Location
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Property details
Listing
- MLS® number
- X13529760
- Added
- Jul 6, 2026 ()
- Updated
- Aug 25, 2026 ()
- Info refreshed
Overview
- Property type
- Single Family
- Building type
- Detached
- Storeys
- 2
- Ownership
- Freehold
Inside
- Bedrooms
- 3+3
- Bathrooms
- 6
- Half baths
- 1
- Heating
- Radiant heat, Forced air, Natural gas
- Cooling
- Central air conditioning, Air exchanger
- Fireplace
- Yes (2)
- Flooring
- Tile, Hardwood
- Appliances
- Hot Tub, Central Vacuum, Range, Oven - Built-In, Garage door opener remote(s), Water Heater - Tankless, Water Heater
- Features
- Wooded area, Irregular lot size, Partially cleared, Carpet Free, Guest Suite, Sump Pump
Building
- Basement
- Finished, Full, Separate entrance, Walk out, Walk-up
- Exterior
- Stone, Hardboard
- Foundation
- Poured Concrete
- Parking
- Attached Garage, Garage, Inside Entry · 15 spaces
- Amenities
- Separate Heating Controls, Fireplace(s)
Land
- Lot size
- 182 x 770 ft
- Lot notes
- deeper 1 side than other
- Pool
- Indoor pool
- Waterfront
- Waterfront on river
- Body of water
- Ausable River
- View
- River view, View of water, Direct Water View
- Zoning
- R6 Lambton Shores
Services
- Water
- Municipal water
- Sewer
- Septic System
- Utilities
- Electricity, Cable, Wireless, Natural Gas Available, Electricity Connected
Location
- Cross streets
- Just N of Lakeview Ave on west side of Ontario St and Merrywood Dr on East side of Ontario St
- Directions
- 260 Ontario Street South, Grand Bend, ON is located is the next turn after Merrywood Dr travelling north on HWY 21 into Grand Bend. Take a right at the address signs marked 260 & 252, head to river, &
- Nearby
- Fishing
Running costs
- Annual property tax
- $15,934
Rooms
| Foyer | Main level | 15.3 x 2.36 m |
| Bedroom | Main level | 3.41 x 4.73 m |
| Bathroom | Main level | 1.86 x 2.63 m |
| Office | Main level | 2.51 x 2.34 m |
| Bathroom | Main level | 1.88 x 1.67 m |
| Family room | Upper Level | 9.19 x 6.13 m |
| Bedroom | Upper Level | 4.66 x 4.24 m |
| Bathroom | Upper Level | 2.43 x 2.91 m |
| Loft | Upper Level | 2.56 x 4.7 m |
| Recreational, Games room | Lower level | 9.72 x 11.91 m |
| Bedroom | Lower level | 5.96 x 4.52 m |
| Living room | Main level | 5.35 x 6.72 m |
| Bedroom 2 | Lower level | 4.01 x 3.87 m |
| Bedroom 3 | Lower level | 5.92 x 3.61 m |
| Exercise room | Lower level | 5.47 x 6.29 m |
| Bathroom | Lower level | 3.9 x 1.64 m |
| Bathroom | Lower level | 3.56 x 1.64 m |
| Exercise room | Lower level | 6.45 x 5.09 m |
| Laundry room | Lower level | 1.53 x 2.94 m |
| Dining room | Main level | 4.14 x 6.72 m |
| Utility room | Lower level | 4.57 x 6.88 m |
| Cold room | Lower level | 3.35 x 2.13 m |
| Kitchen | Main level | 3.12 x 6.73 m |
| Sunroom | Main level | 20.26 x 4.7 m |
| Primary Bedroom | Main level | 5.87 x 4.85 m |
| Pantry | Main level | 2.87 x 7.36 m |
| Other | Main level | 4.19 x 2.72 m |
| Laundry room | Main level | 2.51 x 3.21 m |
| Bathroom | Main level | 4.92 x 5.06 m |