DetachedOn market 209 days

120 Sebastian St, Blue Mountains

Name: 120 Sebastian Street
SKU: X12991318
Price: 3970000 CAD
Availability: InStock

Blue Mountains, ON · · MLS® X12991318Updated April 13, 2026

$3,970,000Est. $19,503/mo mortgage

Bedrooms: 4
Bathrooms: 3
Living space: 3500–5000sq ft
Parking spaces: 6

Type Detached
Garage Yes
Basement None

What you should know

120 Sebastian St is a 4-bedroom, 3-bathroom detached home in Blue Mountains, listed for $3,970,000. It has 3500-5000 sq ft of living space.

Open-concept main level is designed for both everyday living & entertaining, featuring dramatic floor-to-ceiling windows an iconic floating wood-burning fireplace, custom metal shelving & built-in cabinetry.
Heated polished concrete floors w/hydronic radiant heating extend throughout main level & into garage.
Designer kitchen by Chervin Kitchen & Bath offers panelled 36" JennAir fridge, 36" Bosch gas range, marble countertops & backsplash and two panelled drawer dishwashers by Fisher & Paykel.

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4 Bed, 3 Bath Detached Home in Blue Mountains

About 120 Sebastian Street

Exceptional newly built, custom-crafted 2-storey residence, ideally positioned between the shores of Georgian Bay and the ski slopes of Georgian Peaks. Designed by Foreshew Design Associates this 4-bedroom, 3.5-bath home showcases a seamless blend of modern architecture, premium materials and advanced technology. Exterior features include striking black thermal pine siding, durable metal roof & energy-efficient Drutex triple-pane windows & doors. Fully integrated Lutron&Control 4 system w/ multiple control panels provides effortless control of lighting & ambiance throughout. Open-concept main level is designed for both everyday living & entertaining, featuring dramatic floor-to-ceiling windows an iconic floating wood-burning fireplace, custom metal shelving & built-in cabinetry. Heated polished concrete floors w/hydronic radiant heating extend throughout main level & into garage. Designer kitchen by Chervin Kitchen & Bath offers panelled 36" JennAir fridge, 36" Bosch gas range, marble countertops & backsplash and two panelled drawer dishwashers by Fisher & Paykel. Hidden coffee station with double fridge/freezer drawers and automated pocket doors along with spacious walk-in pantry adds both style & functionality. Additional main floor features include soundproof gym with dedicated ventilation system and Elkay bottle filling station as well as designer powder room with statement finishes. Outdoors heated driveway & walkways with snow-melt system ensure low-maintenance winter living. Upper level offers bright family room with custom built-ins, luxurious primary retreat featuring vaulted ceilings, refined finishes, private loft space ideal for meditation, reading or quiet retreat, custom walk-in closet and spa-inspired 5-piece ensuite with walk-in glass shower & integrated tub. Three additional bedrooms, two bathrooms and second-floor laundry complete upper level. Rare offering combining design, comfort and unbeatable four-season lifestyle steps to water & slopes!

4 bedrooms, 3 bathrooms, about 3,500 sq ft, works out to roughly $1,134 per square foot. Chat with Zara if you'd like a deeper read on whether this detached fits your budget and timing.

Inside 120 Sebastian St

Every detail from the listing, in one place.

Type: Detached
Style: 2-Storey
Living space: 3500-5000 sq ftas stated on the listing
Parking: 6 spacesYes garage
Basement: None

Features & systems

Parking & garage

Garage: Yes
Parking spaces: 6

Interior

Basement: None

Lot & land

Lot size (sqft): 0

Listing & possession

Property style: 2-Storey
Property class: Detached

120 Sebastian St Price & Sale History

Earlier listings of this property, list-price changes, and the most recent annual property tax on the listing.

Apr 13, 2026For saleListedThis listingMLS® X12991318$3,970,000

Sourced from MLS®. Includes earlier listings of this property on record.

What's it worth?

How 120 Sebastian St Compares to the Blue Mountains Market

Zara compares it with recent sales of similar homes nearby. It's a guide, not an appraisal.

Zara’s estimate

Well Above Market· based on 151 recent sales

Value your own home →How accurate are Zara’s estimates?

Summitly estimate, not from TRREB, the MLS® or the listing brokerage. Not an appraisal. How it works

Blue Mountains market, last 90 days

Median sold price: $972,500
Average sold price: $1,137,594
Average days on market: 69
Homes sold: 90

Closed sales on the TRREB MLS®.

Full Blue Mountains market report

Recently sold nearby in Blue Mountains

Sold prices are shown free to signed-in members, as board rules require.

6 nearby sales vs. this home

Closed sales from MLS®, compared with this home's asking price.

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Home	Sold price	$ / sqft	% of asking	Sold
This home120 Sebastian Street 4 bd · 3 ba · 3,500 sqft	$3,970,000asking	$1,134	—	—
154 Blue Mountain Drive 3 bd · 2 ba · 1,500 sqft
628482 119 Grey Road 3 bd · 2 ba · 3,500 sqft
17 Elgin Street 3 bd · 4 ba · 1,100 sqft
130 Pioneer Lane 4 bd · 3 ba · 2,500 sqft
124 Dorothy Drive 4 bd · 3 ba · 3,000 sqft
555866 6th Line 4 bd · 2 ba · 2,000 sqft

154 Blue Mountain Drive
3 bd · 2 ba · 1,500 sqft
628482 119 Grey Road
3 bd · 2 ba · 3,500 sqft
17 Elgin Street
3 bd · 4 ba · 1,100 sqft
130 Pioneer Lane
4 bd · 3 ba · 2,500 sqft
124 Dorothy Drive
4 bd · 3 ba · 3,000 sqft
555866 6th Line
4 bd · 2 ba · 2,000 sqft

Living in Blue Mountains: Location & Amenities

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How long is your commute?

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Costs, Mortgage & Rental Return for 120 Sebastian St

What it could cost each month, today's rates from our mortgage partner, and what it could return as a rental.

Mortgage: $19,503; 20% down · 25 years · 5.5% assumed
Property tax: $2,184; 0.66% mill rate · ON
Total per month: $21,687; Before utilities, insurance and fees

Figures are Summitly estimates for illustration only — not from TRREB or the MLS® feed, and not a mortgage approval, appraisal, or financial advice.

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Monthly cost

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Down payment

Rate (%)

Years

An estimate, not a quote. Utilities and insurance are extra.

Affordability calculator

Estimated monthly payment

$19,503

/mo

based on the purchase price of $3,970,000

Down payment20%

$794,000 cash

Amortization25 yr

$3,176,000 financed

Rate5.50%

$2,675,026 total interest

Principal54%$3,176,000

Interest46%$2,675,026

20% down · 25-yr amortization · 5.50% rate. Principal & interest only — taxes, condo fees, and insurance not included.

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Figures are Summitly estimates for illustration only — not from TRREB or the MLS® feed, and not a mortgage approval, appraisal, or financial advice.

Rental income potential

Est. monthly rent

low–high

Gross yield

rent × 12 ÷ price

Cap rate (est.)

net of tax + fees

Summitly AI estimate for discussion only — not from TRREB or the MLS® feed, and not an appraisal or investment advice. Yield and cap rate are derived from the estimated rent versus the asking price.

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Listing brokerage: SUTTON GROUP REALTY SYSTEMS INC., BrokerageMLS® X12991318 · Listing data last updated April 13, 2026

Listing data comes from the Toronto Regional Real Estate Board (TRREB) and is deemed reliable but not guaranteed. Shown on Summitly by Coldwell Banker Summit Realty, Brokerage, which is not the listing brokerage. 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. © 2026 Toronto Regional Real Estate Board. All rights reserved.

Mortgage financing is arranged through Mortgage Squad Advisors. Summitly is the technology platform that powers this site. Estimated values, AI insights, calculator results, and rental projections shown on this page are generated by Summitly and are not provided by, reviewed by, or sourced from TRREB, the MLS®, or the listing brokerage; they are not appraisals or opinions of value. The trademarks REALTOR®, REALTORS®, and the REALTOR® logo are controlled by the Canadian Real Estate Association (CREA) and identify real estate professionals who are members of CREA. The Coldwell Banker® name and logo are trademarks of Coldwell Banker Real Estate LLC.

For sale· listed Apr 12· $1,134/sq ft

Estimated monthly mortgage$19,503/moMortgage only · 20% down · 5.5% assumed

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5.0 · Google rating for Coldwell Banker Summit Realty, Brokerage · as of September 2026

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