DetachedListed today

3310 18th Side Rd, King

Name: 3310 18th Side Rd N/a
SKU: N14119920
Price: 7999000 CAD
Availability: InStock

King, ON · · MLS® N14119920Updated October 27, 2026

$7,999,000Est. $39,297/mo mortgage

Bedrooms: 8
Bathrooms: 8
Living space: 5000 +sq ft
Parking spaces: 38

Type Detached
Lot 17.494999999999997 acres
Garage Yes
Basement Walk-Up, Finished

What you should know

3310 18th Side Rd is an 8-bedroom, 8-bathroom detached home in King, listed for $7,999,000. It has 5000 + sq ft of living space.

An extraordinary 10-acre estate in King, custom built by Royal Luxury Development with an uncompromising commitment to craftsmanship, architectural detail and timeless design.
Offering approximately 20,000 sq. ft. of living space, this remarkable residence was thoughtfully conceived for grand scale entertaining, everyday living and the comfort of multigenerational families.
BasementWalk-Up, Finished, as described in the listing.

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8 Bed, 8 Bath Detached Home in King

About 3310 18th Side Road

An extraordinary 10-acre estate in King, custom built by Royal Luxury Development with an uncompromising commitment to craftsmanship, architectural detail and timeless design. Offering approximately 20,000 sq. ft. of living space, this remarkable residence was thoughtfully conceived for grand scale entertaining, everyday living and the comfort of multigenerational families. A sweeping circular driveway introduces the home's commanding presence, where soaring ceiling heights, imported custom chandeliers, exquisite herringbone walnut flooring and intricate architectural detailing reflect the level of care invested throughout. Every room offers its own sense of character, with beautifully proportioned principal spaces, exceptional finishes and a seamless connection to multiple outdoor terraces overlooking the expansive grounds.With 8 bedrooms and 11 bathrooms, the residence offers remarkable flexibility for extended family and guests, balancing impressive gathering spaces with private retreats. An elevator provides convenient access between levels, while heated flooring adds another layer of comfort to this thoughtfully designed home.Beyond the residence, 10 acres of picturesque grounds offer privacy, room to explore and endless possibilities, including approximately 5 acres with potential for agricultural use and income generation, subject to applicable approvals.A rare opportunity to own an estate of this magnitude, where meticulous craftsmanship, architectural vision and the freedom of country living come together just moments from King's finest amenities.

8 bedrooms, 8 bathrooms, about 5,000 sq ft, works out to roughly $1,600 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 3310 18th Side Rd

Every detail from the listing, in one place.

Type: Detached
Style: 2-Storey
Living space: 5000 + sq ftas stated on the listing
Parking: 38 spacesYes garage
Basement: Walk-Up, Finished

Features & systems

Parking & garage

Garage: Yes
Parking spaces: 38

Interior

Basement: Walk-Up · Finished

Lot & land

Lot size (sqft): 0

Listing & possession

Property style: 2-Storey
Property class: Detached

3310 18th Side Rd Price & Sale History

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

Oct 27, 2026For saleListedThis listingMLS® N14119920$7,999,000

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

What's it worth?

How 3310 18th Side Rd Compares to the King 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 169 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

King market, last 90 days

Median sold price: $1,725,000
Average sold price: $2,048,338
Average days on market: 55
Homes sold: 117

Closed sales on the TRREB MLS®.

Full King market report

Recently sold nearby in King

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

1 nearby sale 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 home3310 18th Side Rd N/a 8 bd · 8 ba · 5,000 sqft	$7,999,000asking	$1,600	—	—
18585 Keele Street 7 bd · 4 ba · 3,500 sqft

18585 Keele Street
7 bd · 4 ba · 3,500 sqft

Living in King: Location & Amenities

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Costs, Mortgage & Rental Return for 3310 18th Side Rd

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

Mortgage: $39,297; 20% down · 25 years · 5.5% assumed
Property tax: $4,399; 0.66% mill rate · ON
Total per month: $43,696; 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

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Affordability calculator

Estimated monthly payment

$39,297

/mo

based on the purchase price of $7,999,000

Down payment20%

$1,599,800 cash

Amortization25 yr

$6,399,200 financed

Rate5.50%

$5,389,806 total interest

Principal54%$6,399,200

Interest46%$5,389,806

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.

For homeowners nearby

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Listing brokerage: HAMMOND INTERNATIONAL PROPERTIES LIMITED, BrokerageMLS® N14119920 · Listing data last updated October 27, 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 Oct 26· $1,600/sq ft

Estimated monthly mortgage$39,297/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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