66 Prospect St, Newmarket

Name: 66 Prospect Street
SKU: N13882840
Price: 1800000 CAD
Availability: InStock

6 Bed, 4 Bath Multiplex in Newmarket

About 66 Prospect Street

Exceptional Investment Opportunity in the Heart of Newmarket with Future Development Potential! Rare opportunity to acquire a unique income-producing property comprising a legal triplex at 64-66 Prospect Street together with a charming detached 2-bedroom bungalow at the rear, municipally known as 567 Granby Place, all included in the purchase price. The main building features three units, including commercial office space on the ground floor and two residential apartments above, offering a versatile mix of commercial and residential income streams. With two units currently occupied and two vacant, investors can benefit from existing rental income while taking advantage of immediate leasing opportunities, with a combined potential rental income of approximately $9,000 per month ($108,000 annually), subject to market conditions. Ideally positioned just steps from Southlake Health (formerly Southlake Regional Health Centre) , historic Downtown Newmarket, Main Street's vibrant shops and restaurants, public transit, and the GO Train. Surrounded by ongoing neighbourhood growth and redevelopment activity, this property presents exciting long-term possibilities for investors, developers, and those seeking to expand their real estate portfolios. Multiple income streams offer diversification and attractive investment flexibility. Enjoy the benefits of immediate income potential, a highly desirable central location, and possible future redevelopment or intensification opportunities, subject to municipal approvals and buyer's independent due diligence. A rare opportunity to invest today while positioning yourself for tomorrow's growth!

6 bedrooms, 4 bathrooms, about 3,500 sq ft, works out to roughly $514 per square foot. Chat with Zara if you'd like a deeper read on whether this multiplex fits your budget and timing.Ask Zara a follow-up

Inside 66 Prospect St

Every detail from the listing, in one place.

Type: Multiplex
Style: 2 1/2 Storey
Living space: 3500-5000 sq ftas stated on the listing
Parking: 8 spaces
Basement: Separate Entrance

Features & systems

Parking & garage

Parking spaces: 8

Interior

Basement: Separate Entrance

Lot & land

Lot size (sqft): 0

Listing & possession

Property style: 2 1/2 Storey
Property class: Multiplex

66 Prospect St 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® N13882840$1,800,000

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

What's it worth?

How 66 Prospect St Compares to the Newmarket 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 618 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

Newmarket market, last 90 days

Median sold price: $953,000
Average sold price: $1,016,380
Average days on market: 28
Homes sold: 401

Closed sales on the TRREB MLS®.

Full Newmarket market report

Market pulse · Newmarket

Newmarket market

Median sold price$953,000Last 90 days
Average days on market28Homes sold in about 28 days on average.
Sale-to-list ratio98.2%On average, homes sold below asking.
Active listings401Homes for sale here right now.
Median vs prior 90 days+1.4%Compared with Apr 12 – Jul 11, 2026: prices up.

Based on 401 sales from Jul 11 – Oct 9, 2026 (217 in the prior 90 days). Aggregate MLS® figures for closed sales; individual sold prices are shown only to signed-in members.

Living in Newmarket: 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

Newmarket GO StationBarrie GO540 m7 min walk
East Gwillimbury GO StationBarrie GO2.2 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

Newmarket GO Station (Barrie GO)7 min walk
East Gwillimbury GO Station (Barrie GO)2.2 km

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

Newmarket GO Station
540 m7 minClosest· Barrie GO
Homes near Newmarket GO Station
East Gwillimbury GO Station
2.2 km· Barrie GO
Homes near East Gwillimbury GO 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 66 Prospect St. Typical times without traffic delays; transit times aren't available yet.

Costs, Mortgage & Rental Return for 66 Prospect St

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

Mortgage: $8,843; 20% down · 25 years · 5.5% assumed
Property tax: $990; 0.66% mill rate · ON
Total per month: $9,833; 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

$8,843

/mo

based on the purchase price of $1,800,000

Down payment20%

$360,000 cash

Amortization25 yr

$1,440,000 financed

Rate5.50%

$1,212,858 total interest

Principal54%$1,440,000

Interest46%$1,212,858

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.

Book a tour of 66 Prospect St with a licensed buyer's agent

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Zara, any time

Zara · AI virtual agent

Ask about 66 Prospect St day or night. Zara reads this listing and answers in plain words. When you want a person, she hands you to a licensed agent.

Ask Zara about this home

A licensed local agent

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Questions About 66 Prospect St

How much is 66 Prospect St listed for?

66 Prospect St is listed at $1,800,000 (MLS® N13882840). Summitly updates the price as soon as the MLS® record changes.

Is $1,800,000 a good price for 66 Prospect St?

Summitly rates it Excellent Deal: the asking price is 10% or more below Zara's estimate, an estimate built from recent sales in Newmarket. 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 66 Prospect St changed?

No — 66 Prospect St is still listed at its original asking price of $1,800,000.

How many bedrooms and bathrooms does 66 Prospect St have?

66 Prospect St has 6 bedrooms and 4 bathrooms, with about 3,500–5,000 square feet of living space. It is a multiplex in Newmarket.

Is 66 Prospect St close to transit?

The nearest rapid-transit station is Newmarket GO Station (Barrie GO), about 540 m (about a 7-minute walk) in a straight line. East Gwillimbury GO Station is about 2.2 km. Distances are straight-line, not walking routes; check the transit agency for routes and schedules.

How much would the monthly mortgage be on 66 Prospect St?

About $8,843 a month — principal and interest on $1,800,000 with 20% down ($360,000), 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 66 Prospect St compare with other homes in Newmarket?

Its asking price of $1,800,000 is about 89% above the median sold price in Newmarket over the last 90 days, $953,000, across 401 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 66 Prospect St been sold before?

Summitly has no earlier MLS® sale or lease of 66 Prospect St on record from the last two years. Older records aren't shown under TRREB rules.

Where is 66 Prospect St?

66 Prospect St is in Newmarket, ON. Schools, transit, parks and shops nearby are under Location & lifestyle on this page.

How long has 66 Prospect St been on the market?

1 day — 66 Prospect St was listed on October 8, 2026.

What is the price per square foot of 66 Prospect St?

About $360 to $514 per square foot: the asking price of $1,800,000 over the 3,500–5,000 sq ft the listing gives as its size range.

Does 66 Prospect St have parking or a garage?

Yes — the listing gives 8 parking spaces.

What you should know

6 Bed, 4 Bath Multiplex in Newmarket

About 66 Prospect Street

Inside 66 Prospect St

Features & systems

66 Prospect St Price & Sale History

How 66 Prospect St Compares to the Newmarket Market

Newmarket market, last 90 days

Living in Newmarket: Location & Amenities

How long is your commute?

Costs, Mortgage & Rental Return for 66 Prospect St

Monthly cost of owning

Mortgage payments

Monthly cost

Rental income potential

Own a home on Prospect Street? See what yours is worth

Zara, any time

A licensed local agent

See 66 Prospect St, Newmarket in person

Similar homes for sale nearby in Newmarket

Explore More Multiplexes in Newmarket

6 Bed, 4 Bath Multiplex in Newmarket

About 66 Prospect Street

Inside 66 Prospect St

Features & systems

66 Prospect St Price & Sale History

How 66 Prospect St Compares to the Newmarket Market

Newmarket market, last 90 days

Market pulse · Newmarket

Living in Newmarket: Location & Amenities

Transit nearby

Transit

How long is your commute?

Costs, Mortgage & Rental Return for 66 Prospect St

Monthly cost of owning

Mortgage payments

Monthly cost

Rental income potential

Own a home on Prospect Street? See what yours is worth

Zara, any time

A licensed local agent

See 66 Prospect St, Newmarket in person

Questions About 66 Prospect St

How much is 66 Prospect St listed for?

Is $1,800,000 a good price for 66 Prospect St?

Has the price of 66 Prospect St changed?

How many bedrooms and bathrooms does 66 Prospect St have?

Is 66 Prospect St close to transit?

How much would the monthly mortgage be on 66 Prospect St?

How does 66 Prospect St compare with other homes in Newmarket?

Has 66 Prospect St been sold before?

Where is 66 Prospect St?

How long has 66 Prospect St been on the market?

What is the price per square foot of 66 Prospect St?

Does 66 Prospect St have parking or a garage?

Similar homes for sale nearby in Newmarket

Explore More Multiplexes in Newmarket

Market pulse · Newmarket

Transit nearby

Transit

Questions About 66 Prospect St

How much is 66 Prospect St listed for?

Is $1,800,000 a good price for 66 Prospect St?

Has the price of 66 Prospect St changed?

How many bedrooms and bathrooms does 66 Prospect St have?

Is 66 Prospect St close to transit?

How much would the monthly mortgage be on 66 Prospect St?

How does 66 Prospect St compare with other homes in Newmarket?

Has 66 Prospect St been sold before?

Where is 66 Prospect St?

How long has 66 Prospect St been on the market?

What is the price per square foot of 66 Prospect St?

Does 66 Prospect St have parking or a garage?