TownhouseListed today

122 Costello Ave, South of Baseline to Knoxdale

Name: 122 Costello Avenue
SKU: X13877404
Price: 449900 CAD
Availability: InStock

South of Baseline to Knoxdale, ON · · MLS® X13877404Updated October 8, 2026

$449,900Est. $2,210/mo mortgage

Bedrooms: 3
Bathrooms: 1
Living space: 1500–2000sq ft
Parking spaces: 1

Type Townhouse
Basement Full, Unfinished

What you should know

122 Costello Ave is a 3-bedroom, 1-bathroom townhouse in South of Baseline to Knoxdale, listed for $449,900. It has 1500-2000 sq ft of living space.

The spacious and functional kitchen offers plenty of room for those who love to cook, with ample cabinetry, storage and space to gather with an eat in breakfast area.
The adjoining, open concept living and dining areas with hardwood flooring provide a warm and inviting setting for everyday family life and entertaining.
A parking space is also included - what else could you need!

Ask Zara:Is there an offer date?What would the monthly costs be?What's nearby?

3 Bed, 1 Bath Townhouse in South of Baseline to Knoxdale

About 122 Costello Avenue

Welcome home to 122 Costello Avenue! Tucked into a charming, family-friendly neighbourhood surrounded by mature greenspace, walking paths and welcoming homes, this lovely three bedroom townhome offers a wonderful combination of space, comfort and everyday convenience. Step inside and you'll immediately appreciate the abundance of natural light throughout. The spacious and functional kitchen offers plenty of room for those who love to cook, with ample cabinetry, storage and space to gather with an eat in breakfast area. The adjoining, open concept living and dining areas with hardwood flooring provide a warm and inviting setting for everyday family life and entertaining. On the second level, you'll find three generously sized bedrooms, including an impressively oversized primary retreat. With room for a king-sized bed and so much more, the space can easily accommodate a home office, reading nook or workout area without ever feeling cramped. A full bathroom completes the second level, while a convenient powder room is located on the main floor! Outside, the south-facing backyard is a wonderful extension of the home, enjoying plenty of sunshine throughout the day - perfect for gardeners, outdoor entertaining or simply relaxing. A parking space is also included - what else could you need! Not to mention, location truly ties it all together! Enjoy a peaceful setting with beautiful greenspace nearby and a walking path along the creek, all while being just moments from schools, parks, shopping, grocery stores, transit, Baseline Road and quick highway access. You really can have it all here! Bright, spacious and wonderfully located, 122 Costello Avenue is an inviting place to put down roots and call home! Come fall in love today. Some photos virtually staged.

3 bedrooms, 1 bathroom, about 1,500 sq ft, works out to roughly $300 per square foot. Chat with Zara if you'd like a deeper read on whether this townhouse fits your budget and timing.Ask Zara a follow-up

Inside 122 Costello Ave

Every detail from the listing, in one place.

Type: Townhouse
Style: 2-Storey
Living space: 1500-2000 sq ftas stated on the listing
Parking: 1 space
Basement: Full, Unfinished

Features & systems

Parking & garage

Parking spaces: 1

Interior

Basement: Full · Unfinished

Lot & land

Lot size (sqft): 0

Listing & possession

Property style: 2-Storey
Property class: Att/Row/Townhouse

122 Costello Ave Price & Sale History

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

Oct 8, 2026For saleListedThis listingMLS® X13877404$449,900

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

What's it worth?

How 122 Costello Ave Compares to the South of Baseline to Knoxdale Market

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

Zara’s estimate

Excellent Deal· based on 162 recent sales

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

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

South of Baseline to Knoxdale market, last 90 days

Median sold price: $605,000
Average sold price: $658,704
Average days on market: 29
Homes sold: 101

Closed sales on the TRREB MLS®.

Recently sold nearby in South of Baseline to Knoxdale

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 home122 Costello Avenue 3 bd · 1 ba · 1,500 sqft	$449,900asking	$300	—	—
68 Costello Avenue 4 bd · 1 ba · 1,500 sqft
193 Thornbury Crescent 3 bd · 1 ba · 700 sqft
121 Thornbury Crescent 3 bd · 2 ba · 1,100 sqft
221 Monterey Drive 3 bd · 2 ba · 1,100 sqft
37 Jansen Road 4 bd · 1 ba · 1,500 sqft
20 Redding Way 3 bd · 2 ba · 1,100 sqft

68 Costello Avenue
4 bd · 1 ba · 1,500 sqft
193 Thornbury Crescent
3 bd · 1 ba · 700 sqft
121 Thornbury Crescent
3 bd · 2 ba · 1,100 sqft
221 Monterey Drive
3 bd · 2 ba · 1,100 sqft
37 Jansen Road
4 bd · 1 ba · 1,500 sqft
20 Redding Way
3 bd · 2 ba · 1,100 sqft

Living in South of Baseline to Knoxdale: Location & Amenities

Transit, schools, parks and everyday places near this home. Select any place to open it on Google Maps.

How long is your commute?

From 122 Costello Ave. Typical times without traffic delays; transit times aren't available yet.

Costs, Mortgage & Rental Return for 122 Costello Ave

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

Mortgage: $2,210; 20% down · 25 years · 5.5% assumed
Property tax: $247; 0.66% mill rate · ON
Total per month: $2,457; Before utilities, insurance and fees

Figures are Summitly estimates for illustration only — not from PropTx 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

$2,210

/mo

based on the purchase price of $449,900

Down payment20%

$89,980 cash

Amortization25 yr

$359,920 financed

Rate5.50%

$303,147 total interest

Principal54%$359,920

Interest46%$303,147

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 PropTx 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 PropTx 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: RE/MAX HALLMARK REALTY GROUP, BrokerageMLS® X13877404 · Listing data last updated October 8, 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 PropTx, 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 Oct 7· $300/sq ft

Estimated monthly mortgage$2,210/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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