Purpose-built triplex in a proven Waterloo rental location - close to St. David Catholic Secondary School and WCI, and minutes to the University of Waterloo, Wilfrid Laurier University and Uptown Waterloo. Three self-contained units with some updates completed and windows in great shape. Ample on-site parking, a real draw for tenants. Lower unit held vacant for the sale, allowing the buyer to set market rent, place their own tenant, or occupy. Solid in-place income with room to improve cash flow
4 bedrooms, 3 bathrooms, about 1,500 sq ft, works out to roughly $660 per square foot. Chat with Zara if you'd like a deeper read on whether this triplex fits your budget and timing.
Inside 18 High St
Every detail from the listing, in one place.
Type
Triplex
Style
2-Storey
Living space
1500-2000 sq ftas stated on the listing
Parking
6 spaces
Basement
Finished, Full
Features & systems
Parking & garage
Parking spaces
6
Interior
Basement
Finished · Full
Lot & land
Lot size (sqft)
0
Listing & possession
Property style
2-Storey
Property class
Triplex
18 High St Price & Sale History
Earlier listings of this property, list-price changes, and the most recent annual property tax on the listing.
For saleListedThis listingMLS® X13713944$990,000
Sourced from MLS®. Includes earlier listings of this property on record.
What's it worth?
How 18 High St Compares to the Waterloo Market
Zara compares it with recent sales of similar homes nearby. It's a guide, not an appraisal.
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
$4,864
/mo
based on the purchase price of $990,000
$198,000 cash
$792,000 financed
$667,072 total interest
Principal54%$792,000
Interest46%$667,072
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.
Keep looking near 18 High St
Homes for sale in Waterloo
Every active Waterloo MLS® listing, updated all day.
Average days on market32Homes sold in about 32 days on average.
Sale-to-list ratio100.0%On average, homes sold at or above asking.
Active listings404Homes for sale here right now.
Median vs prior 90 days−3.8%Compared with Apr 29 – Jul 28, 2026: prices down.
Based on 436 sales from Jul 28 – Oct 26, 2026 (305 in the prior 90 days). Aggregate MLS® figures for closed sales; individual sold prices are shown only to signed-in members.
18 High St is listed at $990,000 (MLS® X13713944). Summitly updates the price as soon as the MLS® record changes.
Is $990,000 a good price for 18 High St?
Summitly rates it Above Market: the asking price is 5% to 15% above Zara's estimate, an estimate built from recent sales in Waterloo. 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 18 High St changed?
No — 18 High St is still listed at its original asking price of $990,000.
How many bedrooms and bathrooms does 18 High St have?
18 High St has 4 bedrooms and 3 bathrooms, with about 1,500–2,000 square feet of living space. It is a triplex in Waterloo.
Is 18 High St close to transit?
The nearest rapid-transit station is Research and Technology Station (ION), about 1.3 km (about a 17-minute walk) in a straight line. University of Waterloo Station is about 1.4 km (about a 18-minute walk), and Laurier - Waterloo Park Station is about 1.6 km (about a 19-minute walk). Distances are straight-line, not walking routes; check the transit agency for routes and schedules.
How much would the monthly mortgage be on 18 High St?
About $4,864 a month — principal and interest on $990,000 with 20% down ($198,000), 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 18 High St compare with other homes in Waterloo?
Its asking price of $990,000 is about 44% above the median sold price in Waterloo over the last 90 days, $687,500, across 436 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 18 High St been sold before?
Summitly has no earlier MLS® sale or lease of 18 High St on record from the last two years. Older records aren't shown under TRREB rules.
Where is 18 High St?
18 High St is in Waterloo, ON. Schools, transit, parks and shops nearby are under Location & lifestyle on this page.
How long has 18 High St been on the market?
61 days — 18 High St was listed on August 26, 2026.
What is the price per square foot of 18 High St?
About $495 to $660 per square foot: the asking price of $990,000 over the 1,500–2,000 sq ft the listing gives as its size range.
