For Sale
818 - Rideau Lakes (Bastard) Twp, Rideau Lakes, ON K0G 1V0
From PropTx
$639,000
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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Welcome to 3 St. Mary's Street in the heart of Portland, a charming century home that blends timeless character with thoughtful modern updates. Set on a generous lot with established gardens, this detached 2-storey home offers four bedrooms, two bathrooms, warm and inviting living spaces, and a bright sunroom with a fireplace, perfect for relaxing year-round.The home has been extensively updated with a new electrical panel, recessed lighting, updated switches and receptacles, a heat pump, new gutters, updated appliances, fresh paint throughout, new upstairs carpeting, custom closet storage in the primary bedroom, and new flooring in the sunroom. Additional improvements include a new driveway, paving stones at the front deck, updated doors, new toilets, a replaced sump pump, and a generator connection.Outside, enjoy established gardens, ample yard space, and a detached garage/barn offering excellent storage and versatility. High-speed fibre internet adds everyday convenience. Best of all, you're just steps from Big Rideau Lake, one of the Rideau Lakes region's most sought-after destinations for boating, swimming, fishing and endless days on the water. Walk to local marinas and restaurants, and enjoy everything that makes Portland such a special waterfront village. Newer community amenities include Portland Hall and library, opened in 2025, as well as a new daycare in the village. Enjoy an easy commute to Kingston in approximately 45 minutes, with Smiths Falls only about 20 minutes away.
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 $3,081 in 2026 to $3,081 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 Rideau Lakes 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: PropTx. Last updated Aug 30, 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.
At 20% or more there is no CMHC premium.
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.. $3,081 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 DAVID ASHLEY & CO. REAL ESTATE LTD..
Listed by RIDEAU REALTY LIMITED.
Listed by ENGEL & VOLKERS OTTAWA.
Listed by ROYAL LEPAGE ADVANTAGE REAL ESTATE LTD.
Listed by RE/MAX HOMETOWN REALTY INC.
Listed by RE/MAX FRONTLINE REALTY.
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 DAVID ASHLEY & CO. REAL ESTATE LTD..
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 $3,385. Every line, the pool and the well included, plus the first-year total, is on the full breakdown.
Listed by RIDEAU REALTY LIMITED.
Listed by ENGEL & VOLKERS OTTAWA.
Listed by ROYAL LEPAGE ADVANTAGE REAL ESTATE LTD.
Listed by RE/MAX HOMETOWN REALTY INC.
Listed by RE/MAX FRONTLINE REALTY.