166 Arnold Ave, Vaughan

Name: 166 Arnold Avenue
SKU: N14108462
Price: 3799000 CAD
Availability: InStock

5 Bed, 8 Bath Detached Home in Vaughan

About 166 Arnold Avenue

A rare opportunity to own a distinguished estate on prestigious Arnold Avenue in the heart of Prime Old Thornhill. Set on an exceptional 100 x 160 ft lot, this stately stone-front two-storey residence offers 5 spacious bedrooms, 9 washrooms, soaring ceilings, and an abundance of natural light. Multiple skylights enhance the bright, elegant interior, while expansive principal rooms are designed for refined family living and grand entertaining. A 3-car garage, circular interlocked driveway, and secondary service entrance add exceptional functionality. The private, sun-filled backyard creates a serene setting with outstanding privacy. Nestled on one of Thornhill's most prestigious streets, this remarkable estate offers timeless elegance in an unrivalled location.

5 bedrooms, 8 bathrooms, about 5,000 sq ft, works out to roughly $760 per square foot, the bed-to-bath ratio is generous. Chat with Zara if you'd like a deeper read on whether this detached fits your budget and timing.

Inside 166 Arnold Ave

Every detail from the listing, in one place.

Type: Detached
Style: 2-Storey
Living space: 5000 + sq ftas stated on the listing
Lot size: 100.00 x 150.00 Feet
Parking: 11 spacesYes garage
Basement: Finished, Finished with Walk-Out

Features & systems

Parking & garage

Garage: Yes
Parking spaces: 11

Interior

Basement: Finished · Finished with Walk-Out

Lot & land

Lot dimensions: 100.00 x 150.00 Feet
Lot size (sqft): 0

Listing & possession

Property style: 2-Storey
Property class: Detached

166 Arnold Ave Price & Sale History

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

Oct 22, 2026For saleListedThis listingMLS® N14108462$3,799,000
LeasedPreviously listedMLS® N12194914View listing (opens in a new tab)

See what it sold for, free. Board rules need a free account before we can show sold and past prices.

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

What's it worth?

How 166 Arnold Ave Compares to the Vaughan Market

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

Zara’s estimate

Above Market· based on 2,008 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

Vaughan market, last 90 days

Median sold price: $1,140,000
Average sold price: $1,224,067
Average days on market: 33
Homes sold: 1,179

Closed sales on the TRREB MLS®.

Full Vaughan market report

Market pulse · Vaughan

Vaughan market

Median sold price$1,140,000Last 90 days
Average days on market33Homes sold in about 33 days on average.
Sale-to-list ratio97.7%On average, homes sold below asking.
Active listings1,572Homes for sale here right now.
Median vs prior 90 days+5.1%Compared with Apr 25 – Jul 24, 2026: prices up.

Based on 1,179 sales from Jul 24 – Oct 22, 2026 (849 in the prior 90 days). Aggregate MLS® figures for closed sales; individual sold prices are shown only to signed-in members.

Recently sold nearby in Vaughan

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.

See what these homes actually sold for

Free with a Summitly account. Sign in once and sold prices unlock across the site.

Home	Sold price	$ / sqft	% of asking	Sold
This home166 Arnold Avenue 5 bd · 8 ba · 5,000 sqft	$3,799,000asking	$760	—	—
568 Grand Trunk Avenue 4 bd · 4 ba · 3,000 sqft
9 Aidan Drive 4 bd · 2 ba · 2,000 sqft
101 Appleyard Avenue 5 bd · 5 ba · 3,500 sqft
52 Canelli Heights Court 4 bd · 4 ba · 2,500 sqft
25 Andrew Hill Drive 4 bd · 3 ba · 2,500 sqft
16 Westway Crescent 4 bd · 3 ba · 2,500 sqft

568 Grand Trunk Avenue
4 bd · 4 ba · 3,000 sqft
9 Aidan Drive
4 bd · 2 ba · 2,000 sqft
101 Appleyard Avenue
5 bd · 5 ba · 3,500 sqft
52 Canelli Heights Court
4 bd · 4 ba · 2,500 sqft
25 Andrew Hill Drive
4 bd · 3 ba · 2,500 sqft
16 Westway Crescent
4 bd · 3 ba · 2,500 sqft

Living in Vaughan: Location & Amenities

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

Transit nearby

Stations and stops, straight-line distance

Langstaff GO StationRichmond Hill GO3.5 km
Finch StationLine 13.6 km
North York Centre StationLine 14.9 km

Places from OpenStreetMap (© OpenStreetMap contributors) and Summitly's station list. Distances are straight-line, not routes.

Loading schools, parks, groceries and more nearby…

Transit

Langstaff GO Station (Richmond Hill GO)3.5 km
Finch Station (Line 1)3.6 km
North York Centre Station (Line 1)4.9 km

Nearest subway, GO and LRT stations first, then bus and streetcar stops.

Langstaff GO Station
3.5 kmClosest· Richmond Hill GO
Homes near Langstaff GO Station
Finch Station
3.6 km· Line 1
Homes near Finch Station
North York Centre Station
4.9 km· Line 1
Homes near North York Centre Station

Straight-line distances from the listing; walking times assume about 80 m a minute. Places © OpenStreetMap contributors, a community-maintained map that may miss or misplace some places. Directions and place details open on Google Maps.

How long is your commute?

From 166 Arnold Ave. Typical times without traffic delays; transit times aren't available yet.

Costs, Mortgage & Rental Return for 166 Arnold Ave

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

Mortgage: $18,663; 20% down · 25 years · 5.5% assumed
Property tax: $2,089; 0.66% mill rate · ON
Total per month: $20,752; 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

Enter a rate to see the monthly cost

Down payment

Rate (%)

Years

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

Affordability calculator

Estimated monthly payment

$18,663

/mo

based on the purchase price of $3,799,000

Down payment20%

$759,800 cash

Amortization25 yr

$3,039,200 financed

Rate5.50%

$2,559,804 total interest

Principal54%$3,039,200

Interest46%$2,559,804

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

Want rate-drop alerts and a saved shortlist?

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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Questions About 166 Arnold Ave

How much is 166 Arnold Ave listed for?

166 Arnold Ave is listed at $3,799,000 (MLS® N14108462). Summitly updates the price as soon as the MLS® record changes.

Is $3,799,000 a good price for 166 Arnold Ave?

Summitly rates it Above Market: the asking price is 5% to 15% above Zara's estimate, an estimate built from recent sales in Vaughan. The rating is an automated opinion, not an appraisal; "What's it worth?" on this page shows how it is worked out. See Zara's estimate

Has the price of 166 Arnold Ave changed?

No — 166 Arnold Ave is still listed at its original asking price of $3,799,000.

How many bedrooms and bathrooms does 166 Arnold Ave have?

166 Arnold Ave has 5 bedrooms and 8 bathrooms, with about 5,000 square feet of living space. It is a detached home in Vaughan.

Is 166 Arnold Ave close to transit?

The nearest rapid-transit station is Langstaff GO Station (Richmond Hill GO), about 3.5 km in a straight line. Finch Station is about 3.6 km, and North York Centre Station is about 4.9 km. Distances are straight-line, not walking routes; check the transit agency for routes and schedules.

How much would the monthly mortgage be on 166 Arnold Ave?

About $18,663 a month — principal and interest on $3,799,000 with 20% down ($759,800), a 25-year amortization and an assumed 5.5% interest rate. The mortgage calculator on this page lets you change the down payment, amortization and rate.

How does 166 Arnold Ave compare with other homes in Vaughan?

Its asking price of $3,799,000 is about 233% above the median sold price in Vaughan over the last 90 days, $1,140,000, across 1,179 closed sales on the TRREB MLS®. A city median mixes every type and size of home, so the comparable sales on this page are the closer guide.

Has 166 Arnold Ave been sold before?

Yes — Summitly has 1 earlier MLS® listing of 166 Arnold Ave on record. Their prices and dates are shown to signed-in members under TRREB rules: sign in free to see them in the Listing history above.

Where is 166 Arnold Ave?

166 Arnold Ave is in Vaughan, ON. Schools, transit, parks and shops nearby are under Location & lifestyle on this page.

How long has 166 Arnold Ave been on the market?

166 Arnold Ave was listed today (October 22, 2026).

What is the price per square foot of 166 Arnold Ave?

About $760 per square foot: the asking price of $3,799,000 over the 5,000 sq ft the listing gives.

Does 166 Arnold Ave have parking or a garage?

Yes — the listing gives 11 parking spaces. Garage: Yes.

What you should know

5 Bed, 8 Bath Detached Home in Vaughan

About 166 Arnold Avenue

Inside 166 Arnold Ave

Features & systems

166 Arnold Ave Price & Sale History

How 166 Arnold Ave Compares to the Vaughan Market

Vaughan market, last 90 days

Recently sold nearby in Vaughan

Living in Vaughan: Location & Amenities

How long is your commute?

Costs, Mortgage & Rental Return for 166 Arnold Ave

Monthly cost of owning

Mortgage payments

Monthly cost

Rental income potential

Own a home on Arnold Avenue? See what yours is worth

Zara, any time

A licensed local agent

See 166 Arnold Ave, Vaughan in person

Similar homes for sale nearby in Vaughan

Explore More Detached Homes in Vaughan

5 Bed, 8 Bath Detached Home in Vaughan

About 166 Arnold Avenue

Inside 166 Arnold Ave

Features & systems

166 Arnold Ave Price & Sale History

How 166 Arnold Ave Compares to the Vaughan Market

Vaughan market, last 90 days

Market pulse · Vaughan

Recently sold nearby in Vaughan

Living in Vaughan: Location & Amenities

Transit nearby

Transit

How long is your commute?

Costs, Mortgage & Rental Return for 166 Arnold Ave

Monthly cost of owning

Mortgage payments

Monthly cost

Rental income potential

Own a home on Arnold Avenue? See what yours is worth

Zara, any time

A licensed local agent

See 166 Arnold Ave, Vaughan in person

Questions About 166 Arnold Ave

How much is 166 Arnold Ave listed for?

Is $3,799,000 a good price for 166 Arnold Ave?

Has the price of 166 Arnold Ave changed?

How many bedrooms and bathrooms does 166 Arnold Ave have?

Is 166 Arnold Ave close to transit?

How much would the monthly mortgage be on 166 Arnold Ave?

How does 166 Arnold Ave compare with other homes in Vaughan?

Has 166 Arnold Ave been sold before?

Where is 166 Arnold Ave?

How long has 166 Arnold Ave been on the market?

What is the price per square foot of 166 Arnold Ave?

Does 166 Arnold Ave have parking or a garage?

Similar homes for sale nearby in Vaughan

Explore More Detached Homes in Vaughan

Market pulse · Vaughan

Transit nearby

Transit

Questions About 166 Arnold Ave

How much is 166 Arnold Ave listed for?

Is $3,799,000 a good price for 166 Arnold Ave?

Has the price of 166 Arnold Ave changed?

How many bedrooms and bathrooms does 166 Arnold Ave have?

Is 166 Arnold Ave close to transit?

How much would the monthly mortgage be on 166 Arnold Ave?

How does 166 Arnold Ave compare with other homes in Vaughan?

Has 166 Arnold Ave been sold before?

Where is 166 Arnold Ave?

How long has 166 Arnold Ave been on the market?

What is the price per square foot of 166 Arnold Ave?

Does 166 Arnold Ave have parking or a garage?