No photo
For Sale
Blue Mountains, Blue Mountains, ON N0H 1J0
From PropTx
$699,000
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.
The listing does not state a bedroom count.
The listing does not state a bathroom count.
The listing does not state an interior floor area. Lot size, where it is given, measures the land instead.
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
Sign in to see: this figure is available to registered members with a verified account.
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.
Sign in or create an account with a verified email and accept the terms of use to see the full history.
Positioned on the desirable west end of Sebastian Street, 139 Sebastian Street offers an exceptional opportunity to build a custom home in one of The Blue Mountains' most coveted bayside communities. Measuring approximately 50 x 191 feet, this rectangular lot offers outstanding depth and a private treed backdrop, creating the ideal canvas for thoughtful design and seamless indoor-outdoor living. Just moments from Georgian Bay, Georgian Peaks Ski Club, the Georgian Trail, golf, skiing, hiking, and marinas, this sought-after location blends natural beauty, privacy, and four-season recreation in a setting surrounded by luxury homes and lifestyle-driven amenities.
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.
This listing states none of these. A seller is not required to, and plenty do not. Nothing here is filled in from an average of other houses, so the gap stays visible: ask for these in writing before an offer, and treat the answers as part of the negotiation.
1 years, from $1,406 in 2025 to $1,406 in 2025.
Neighbourhood market statistics is available to members
Sign in to see: this figure is available to registered members with a verified account.
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 Blue Mountains 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 May 27, 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.. $1,406 for 2025, 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.
Connect with Tara
Tara McCarthy
Broker, VP Ultra Luxury Division
Every question about this home reaches a licensed broker, not a form.
Scott McGillivray’s Trusted Network
Trades and more, once the keys are yours
Check out Scott’s preferred network to find licensed, insured trades and more.
Explore the networkSourced from MyNest360
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 INTERCITY REALTY INC..
Listed by Royal LePage Signature Realty.
Listed by Royal LePage Locations North.
Listed by SAM MCDADI REAL ESTATE INC..
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 INTERCITY REALTY INC..
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 $3,430. Every line, the pool and the well included, plus the first-year total, is on the full breakdown.
Listed by Royal LePage RCR Realty.
Listed by Royal LePage Signature Realty.
Listed by iCloud Realty Ltd..
Listed by Royal LePage Locations North.
Listed by SAM MCDADI REAL ESTATE INC..