**7.82% CAP RATE!**The King Charles: A Newly Built Legal Triplex in Port Colborne Completed in 2024. Buy One or Buy Both. The King Charles is a legal, side-by-side triplex spanning more than 4,300 sq ft in the heart of downtown Port Colborne. The property generates over $200,000 in gross annual revenue (across 6 units) and is currently licensed for short-term rental operation, positioning it as a turnkey income asset from day one. Three self-contained units, each with a private entrance, offer flexibility for investors, multi-generational households, or owner-occupiers seeking rental income from the remaining suites. The short-term rental license offers an alternative to long-term tenancy arrangements and the regulatory considerations that can accompany them.The business operates across three seasons. Peak season runs June through September, with May and October as shoulder months. In the low season, November through April, the strategy shifts from tourism toward furnished monthly rentals and room-by-room worker accommodation, sustaining gross revenue of approximately $14,000 per month across all six units (both triplexes).The sale includes all furniture, the infrastructure already in place: a professional cleaning team, established vendors, and existing bookings. This is not just a property, but the purchase of a turnkey operating business with cash flow from day one.Built to current code, the property is designed for durability and minimal ongoing maintenance. It sits within walking distance of downtown Port Colborne's shops, restaurants, parks, and schools, with Nickel Beach and Sugarloaf Marina a short drive away, in one of Niagara's most sought-after and fastest-growing communities.For investors seeking a newly built, income-generating multi-unit property, or owner-occupiers interested in living on-site while renting the balance of the building, The King Charles represents a rare opportunity for cash flow from day one. Properties: 664 King & 24 Charles.
6 bedrooms, 4 bathrooms, about 3,500 sq ft, works out to roughly $229 per square foot. Chat with Zara if you'd like a deeper read on whether this triplex fits your budget and timing.
Inside 664 King St
Every detail from the listing, in one place.
Type
Triplex
Style
2-Storey
Living space
3500-5000 sq ftas stated on the listing
Parking
6 spaces
Basement
Apartment, Separate Entrance
Features & systems
Parking & garage
Parking spaces
6
Interior
Basement
Apartment · Separate Entrance
Lot & land
Lot size (sqft)
0
Listing & possession
Property style
2-Storey
Property class
Triplex
664 King St Price & Sale History
Earlier listings of this property, list-price changes, and the most recent annual property tax on the listing.
Independent mortgage broker · OAC · rates subject to change and underwritingMortgage Squad →
Referral disclosure: Summitly may refer you to Mortgage Squad Advisors, an affiliated mortgage partner. You are free to choose any lender or mortgage professional.
Monthly cost
Enter a rate to see the monthly cost
An estimate, not a quote. Utilities and insurance are extra.
Affordability calculator
Estimated monthly payment
$3,929
/mo
based on the purchase price of $799,850
$159,970 cash
$639,880 financed
$538,947 total interest
Principal54%$639,880
Interest46%$538,947
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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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.
Similar homes for sale nearby in Port Colborne
Other 6-bed homes for sale in Port Colborne around $800K.
Average days on market48Homes sold in about 48 days on average.
Sale-to-list ratio94.4%On average, homes sold below asking.
Active listings189Homes for sale here right now.
Median vs prior 90 days−8.7%Compared with May 13 – Aug 11, 2026: prices down.
Based on 100 sales from Aug 11 – Nov 9, 2026 (74 in the prior 90 days). Aggregate MLS® figures for closed sales; individual sold prices are shown only to signed-in members.
Questions About 664 King St
How much is 664 King St listed for?
664 King St is listed at $799,850 (MLS® X13621770). Summitly updates the price as soon as the MLS® record changes.
Is $799,850 a good price for 664 King St?
Summitly rates it Excellent Deal: the asking price is 10% or more below Zara's estimate, an estimate built from recent sales in Port Colborne. 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 664 King St changed?
Yes — it was first listed at $849,990 and is now $799,850, a drop of $50,140 (5.9%).
How many bedrooms and bathrooms does 664 King St have?
664 King St has 6 bedrooms and 4 bathrooms, with about 3,500–5,000 square feet of living space. It is a triplex in Port Colborne.
How much would the monthly mortgage be on 664 King St?
About $3,929 a month — principal and interest on $799,850 with 20% down ($159,970), 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 664 King St compare with other homes in Port Colborne?
Its asking price of $799,850 is about 74% above the median sold price in Port Colborne over the last 90 days, $460,000, across 100 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 664 King St been sold before?
Summitly has no earlier MLS® sale or lease of 664 King St on record from the last two years. Older records aren't shown under TRREB rules.
Where is 664 King St?
664 King St is in Port Colborne, ON. Schools, transit, parks and shops nearby are under Location & lifestyle on this page.
How long has 664 King St been on the market?
102 days — 664 King St was listed on July 30, 2026.
What is the price per square foot of 664 King St?
About $160 to $229 per square foot: the asking price of $799,850 over the 3,500–5,000 sq ft the listing gives as its size range.
Does 664 King St have parking or a garage?
Yes — the listing gives 6 parking spaces.
Does 664 King St have a basement, and is it finished?
The listing describes the basement as: Apartment, Separate Entrance.
