For Sale New MLS® X13801344

26A Winchester Drive

Seguin · Seguin · ON · P0C 1J0

Listed yesterday

Flyer Contact agent
5 Beds
5 Baths
3,500–5,000 Sqft
12 Parking
Detached Type

About this property

Walk-out basement

Set on iconic Lake Rosseau near Picnic Point, Winchester Retreat is an exceptional waterfront residence featuring extensive 2026 new-from-the-studs construction along with new additions for the kitchen, dining room, Muskoka Room and primary suite. Contemporary design blends beautifully with timeless Muskoka post-and-beam craftsmanship.Positioned on 1.72 acres with all-day sun and expansive island views, the property offers approximately 4,819 sq. ft. of finished living space with five bedrooms and five bathrooms. Restored white pine timbers, cathedral ceilings, wide-plank white oak flooring and custom millwork define the interiors. The dramatic great room features a wall of glass framing sweeping lake views, Selva Bianca marble propane fireplace, tiered alabaster chandelier, private office and access to lakeside decks. A concealed door from the bar leads to the pantry.The chef's kitchen features Panda White marble, Wolf double-oven range, Sub-Zero refrigeration, large island and Thermador dishwasher, opening to the dining room and glass-enclosed Muskoka Room.The private primary suite offers lake views, spa-inspired ensuite, walk-in closet, laundry, office and private deck. Additional highlights include guest suites, lakeview loft, recreation room with bar, gym and secondary laundry.At the shoreline, a newly constructed 2026 boathouse and dock offer southwest sunset views, lounge area, kitchenette, granite serving bar, change room and storage. Deep and shallow swimming, Muskoka stone pathways, fire pit, hot tub, and multiple seating areas complete the waterfront.Parking for 10+ vehicles, a 4-car detached garage, space for a pool or pickleball court, and an approved permit for a new two-bedroom bunkie with separate septic add exceptional versatility. Minutes from Rosseau village with easy access to dining, golf, resorts and Big Three boating.

Key facts

Type Detached · 2-Storey
Size 3,500–5,000 sqft
Lot 175 ft frontage
Taxes $8,384/yr
Basement Finished with Walk-Out, Full
Total parking 12
Neighbourhood Seguin
Property details
Property type Detached
Style 2-Storey
Rooms & baths
Bedrooms above / below 3 · 2
Building & utilities
Basement Finished with Walk-Out, Full
Parking
Total 12
Lot
Width / Depth 175 ft
Financial
Taxes $8,384/yr

Mortgage calculator

$51,346/moMonthly payment
$8,792,000Mortgage amount
$6,611,783Total interest
$17,601,783Total cost

Location

Market Overview

Seguin

Loading market data…
MLS® X13801344 Brokerage Cayman Marshall International Realty Inc. Listed Sep 18, 2026 Updated Sep 18, 2026

Listing data provided by the Toronto Regional Real Estate Board (TRREB).

Similar properties

The listing data is provided under copyright by the Toronto Regional Real Estate Board (TRREB). The listing data is deemed reliable but is not guaranteed accurate by TRREB. The trademarks MLS®, Multiple Listing Service® and the associated logos are owned by The Canadian Real Estate Association (CREA) and identify the quality of services provided by real estate professionals who are members of CREA.

Last updated: September 19, 2026.

$10,990,000 5 bd · 5 ba
Call Text