For Sale
63 - Stone Mills, Stone Mills, ON K0K 2S0
From PropTx
$4,490,000
As listed by the seller and their brokerage. It is a request, not a valuation, and nothing tests it until an offer arrives.
From MyNest360
The tools we build on top of the listing, each figure sourced and none of it PropTx data: what the house really costs to hold, what it costs to borrow against, and the inspection to book before your conditions come off.
From PropTx
The price, facts, description and history exactly as the feed states them. Nothing in this section is our own estimate.
Counts and measurements as the listing states them, not verified by us. Source: PropTx
What comes from PropTx, and what is ours
The price, address, room and size figures, description and days on site are sourced from PropTx and can lag the live listing. The map placement and the cost, offer, insurance and rental tools below are our own work, not PropTx data. Anything we have modelled rather than sourced carries an Est. tag.
This listing's price and status history is available to members
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Prior asking prices, terminations and relists are licensed to registered members only. Nothing here should be read as evidence that the current price is the only price this house has been offered at: it is a limit on who we may show this to, not a finding about the listing.
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LONGHOUSE is an architecturally significant waterfront estate inspired by Rural Modern design, set on 6.85 acres with over 350 feet of private frontage on the Napanee River. Designed for multi generational living and exceptional entertaining, the property offers approximately 6,000 sq. ft. of finished living space, including a spectacular river-facing solarium, a double-car garage attached garage and a self-contained loft residence above. The timber-frame main residence sits atop a wood-textured concrete plinth, capturing panoramic river views from nearly every room. Outdoor living is highlighted by a 1,000sq. ft. riverfront terrace and professionally landscaped grounds that blend seamlessly with the surrounding natural environment, gated property access, 2-car garage attached, 2 car detached garage and fully paved driveway. Inside, thoughtfully curated finishes showcase exceptional craftsmanship, including rift-cut white oak millwork, hand-finished cabinetry, Italian porcelain tile, German-engineered white oak flooring, and a STUV wood-burning fireplace. Expansive windows flood the home with natural light while framing breathtaking water views. The main level features a luxurious primary suite with a spa-inspired ensuite, walk-in dressing room, and direct access to outdoor living spaces. The upper level offers two additional bedrooms, a shared bath, and a dramatic gallery/library space. The lower level includes a guest suite, family room, wellness area, laundry facilities, and flexible living spaces. Located between Kingston and Prince Edward County, LONGHOUSE provides a rare combination of privacy, architectural excellence, and year-round estate waterfront living. Approximately two hours from Toronto, Ottawa, and Montreal, this remarkable property represents a unique opportunity to own one of Eastern Ontario's premier luxury waterfront estates.
Written by the listing brokerage to sell the house. Nothing in it is verified, so take its claims about condition to an inspection, not from it.
The pills are copied from the listing and sorted for reading, with nothing added to them, and a group the listing did not fill in is absent rather than empty. Where a group is written as sentences instead, those are ours: what the listing named, and what it means.
On the record, and not one of the groups above.
1 years, from $12,031 in 2026 to $12,031 in 2026.
Neighbourhood market statistics is available to members
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Medians, sale-to-list ratios and absorption are computed from sold prices, and they are licensed to registered users only. There is no approximate version of a median that would be honest to show in their place.
Every home of this type in Stone Mills that has sold in the last 3 years.
Contact details for the listing agent are not shown: our current listing agreement licences them to registered users only.
Sourced from: Toronto Regional Real Estate Board, via PropTx RESO Web API. Last updated Aug 8, 2026.
The information provided herein must only be used by consumers that have a bona fide interest in the purchase, sale or lease of real estate and may not be used for any commercial purpose or any other purpose. Listing information is deemed reliable but is not guaranteed accurate by the Toronto Regional Real Estate Board or PropTx.
From MyNest360
None of this is PropTx data. Each figure is our own and carries its source: the true cost to own, the mortgage studio, the inspection plan, and the rest.
20% is the legal minimum on this price.
20% down · 4.68% indicative 5-yr fixed · The number of years the whole balance is paid off over. A longer amortization lowers the monthly payment and raises the total interest.. $12,031 for 2026, from the tax figure stated on the listing, divided by twelve. That is what the current owner pays, as the listing states it. That twelfth is the annual amount levelled across the year and not a payment you will make on any date. How a municipality actually collects it is set out in documents nobody here has read.; heat and utilities estimated. Figures illustrative.
Compare lenders and private optionsIt asks one question first: whether someone is already acting for you. That answer changes who books the visit and who is on your side inside the house.
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Tara McCarthy
Broker, VP Ultra Luxury Division
Every question about this home reaches a licensed broker, not a form.
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Figures such as 4.79% sample rates and estimates are illustrative only. Verify all details with a licensed professional before making an offer.
The listing does not say whether there is a second dwelling unit here. Other records in this set state it either way, so this is a silence rather than a no.
Listed by ROYAL LEPAGE PROALLIANCE REALTY, BROKERAGE.
Listed by RE/MAX HALLMARK FIRST GROUP REALTY LTD. , BROKERAGE.
Listed by CENTURY 21 LANTHORN REAL ESTATE LTD., BROKERAGE.
Listed by CENTURY 21 HERITAGE GROUP LTD., BROKERAGE.
Listed by RE/MAX FINEST REALTY INC., BROKERAGE.
Listed by RE/MAX FINEST REALTY INC., BROKERAGE.
Two figures stand against this house for two different purposes, the asking price and the assessment, so they do not agree and were never meant to. The gap is worked out here rather than left for you to hold in your head.
Nothing of this kind on the record, and nothing here fills it in from an average of other houses.
The figure property tax is apportioned from, valued as of a date that is not today. It is not a market value and no lender treats it as one.
Listed by ROYAL LEPAGE PROALLIANCE REALTY, BROKERAGE.
None of these is an appraisal. Your lender orders one of those once an offer is accepted, and it is the figure that decides how much they will actually lend.
At 20% down and 4.68% fixed, the all-in monthly cost works out to $21,627. Every line, the pool and the well included, plus the first-year total, is on the full breakdown.
Listed by RE/MAX HALLMARK FIRST GROUP REALTY LTD. , BROKERAGE.
Listed by CENTURY 21 LANTHORN REAL ESTATE LTD., BROKERAGE.
Listed by CENTURY 21 HERITAGE GROUP LTD., BROKERAGE.
Listed by RE/MAX FINEST REALTY INC., BROKERAGE.
Listed by RE/MAX FINEST REALTY INC., BROKERAGE.