Collections · Newmarket

Homes with an in-law suite in Newmarket

71 for sale in Newmarket right now, updated from the TRREB feed through the day. A separate entrance, a basement apartment, or a second kitchen — a second self-contained space under one roof.

71For sale now

$880,000Median sold · Sep 2026

65Homes sold · Sep 2026

27Days on market · Sep 2026

96.2%Sold vs asking · Sep 2026

Newmarket market reportTrends & data →

A second self-contained space changes what a house can do. It houses a parent without putting them in a bedroom down the hall, or it carries part of the mortgage, and in Durham it is one of the hardest things to search for — the big portals have no filter for it.

How we picked these: These are homes whose listing describes a separate entrance, in-law suite or basement apartment. That wording comes from the listing brokerage and is not a statement about whether the space is a legal second unit. Retrofit status, fire separation and zoning all have to be confirmed with the municipality before you count on rental income — ask us and we'll check before you write an offer.

See every one across the GTA → · All homes for sale in Newmarket →

Popular neighbourhoods:Central Newmarket Bristol-London Huron Heights-Leslie Valley Summerhill Estates Gorham-College Manor Stonehaven-Wyndham Woodland Hill Glenway Estates Armitage All Newmarket neighbourhoods ↓

Ways to browse:Homes with an in-law suite 71 Detached under $1M 62 Walk-out basements 60 Just reduced 54 Bungalows 46 Homes with a pool 35 Under $700K 35 New this week 27

Homes with an in-law suite for sale

71 in Newmarket · newest 24 shown

175 Penn Avenue, Newmarket, ON L3Y 2S3

175 Penn AvenueNewmarket, ON L3Y 2S3

Newmarket · Bristol-London

3 + 1 bed2 bath4 parking

Renavu EstimateMedium

8% above our estimate

Estimated value: $682,000

MLS® N13882332EXP REALTY

83 Bergin Road, Newmarket, ON L3X 1S2

83 Bergin RoadNewmarket, ON L3X 1S2

Newmarket · Armitage

4 + 1 bed4 bath6 parking

Renavu EstimateHigh

4% above our estimate

Estimated value: $1,179,000

MLS® N14105148ROYAL LEPAGE VISION REALTY

735 Srigley Street, Newmarket, ON L3Y 1X6

735 Srigley StreetNewmarket, ON L3Y 1X6

Newmarket · Gorham-College Manor

4 bed3 bath4 parking

MLS® N13746714RIGHT AT HOME REALTY

79 Beswick Drive, Newmarket, ON L3Y 1E8

79 Beswick DriveNewmarket, ON L3Y 1E8

Newmarket · Central Newmarket

3 + 1 bed3 bath6 parking

Renavu EstimateLow

12% above our estimate

Estimated value: $937,000

MLS® N14031742EXP REALTY

458 Chester Avenue, Newmarket, ON L3Y 6R7

458 Chester AvenueNewmarket, ON L3Y 6R7

Newmarket · Bristol-London

4 bed4 bath4 parking

Renavu EstimateLow

8% below our estimate

Estimated value: $926,000

MLS® N13640434RE/MAX HALLMARK YORK GROUP REALTY LTD.

92 Howard Road, Newmarket, ON L3Y 3G7

92 Howard RoadNewmarket, ON L3Y 3G7

Newmarket · Huron Heights-Leslie Valley

5 + 1 bed7 bath6 parking

MLS® N13808144ROYAL LEPAGE SIGNATURE REALTY

613 Society Crescent, Newmarket, ON L3X 2V8

613 Society CrescentNewmarket, ON L3X 2V8

Newmarket · Summerhill Estates

4 + 1 bed4 bath4 parking

MLS® N14115898HOMELIFE FRONTIER REALTY INC.

66 Howlett Avenue, Newmarket, ON L3Y 5S5

66 Howlett AvenueNewmarket, ON L3Y 5S5

Newmarket · Huron Heights-Leslie Valley

4 bed4 bath6 parking

Renavu EstimateHigh

8% above our estimate

Estimated value: $1,061,000

MLS® N14127390CENTURY 21 HERITAGE GROUP LTD.

43 Newbury Drive, Newmarket, ON L3Y 4P9

43 Newbury DriveNewmarket, ON L3Y 4P9

Newmarket · Bristol-London

3 + 2 bed2 bath4 parking

Renavu EstimateLow

8% above our estimate

Estimated value: $673,000

MLS® N14126694LPT REALTY

872 Hilton Boulevard, Newmarket, ON L3X 2H8

872 Hilton BoulevardNewmarket, ON L3X 2H8

Newmarket · Stonehaven-Wyndham

3 + 1 bed5 bath8 parking

Renavu EstimateHigh

5% below our estimate

Estimated value: $1,050,000

MLS® N14118904RE/MAX HALLMARK REALTY LTD.

250 Helmer Avenue, Newmarket, ON L3Y 4L9

250 Helmer AvenueNewmarket, ON L3Y 4L9

Newmarket · Central Newmarket

2 bed1 bath4 parking

MLS® N13858150RE/MAX REALTRON REALTY INC.

70 Hamilton Drive, Newmarket, ON L3Y 3E8

70 Hamilton DriveNewmarket, ON L3Y 3E8

Newmarket · Huron Heights-Leslie Valley

3 + 1 bed3 bath8 parking

Renavu EstimateLow

4% below our estimate

Estimated value: $1,237,000

MLS® N13860326T-ONE GROUP REALTY INC.,

416 Bartholomew Drive, Newmarket, ON L3X 2E5

416 Bartholomew DriveNewmarket, ON L3X 2E5

Newmarket · Summerhill Estates

4 + 1 bed4 bath6 parking

Renavu EstimateHigh

7% above our estimate

Estimated value: $1,078,000

MLS® N14087400EXP REALTY

282 Reg Harrison Trail, Newmarket, ON L3X 0M4

282 Reg Harrison TrailNewmarket, ON L3X 0M4

Newmarket · Glenway Estates

4 bed4 bath6 parking

MLS® N14083576CENTURY 21 HERITAGE GROUP LTD.

671 Walpole Crescent, Newmarket, ON L3X 2B2

671 Walpole CrescentNewmarket, ON L3X 2B2

Newmarket · Stonehaven-Wyndham

3 bed4 bath3 parking

MLS® N13840150CENTURY 21 HERITAGE GROUP LTD.

582 Gorham Street, Newmarket, ON L3Y 1L3

582 Gorham StreetNewmarket, ON L3Y 1L3

Newmarket · Gorham-College Manor

4 + 1 bed5 bath5 parking

MLS® N14123416SUTTON GROUP-ADMIRAL REALTY INC.

1002 Oaktree Crescent, Newmarket, ON L3X 2Z3

1002 Oaktree CrescentNewmarket, ON L3X 2Z3

Newmarket · Summerhill Estates

4 + 1 bed4 bath4 parking

Renavu EstimateHigh

In line with our estimate

Estimated value: $1,085,000

MLS® N14125014KELLER WILLIAMS REFERRED URBAN REALTY

86 Newbury Drive, Newmarket, ON L3Y 4R3

86 Newbury DriveNewmarket, ON L3Y 4R3

Newmarket · Bristol-London

3 + 2 bed2 bath4 parking

MLS® N13844990HOMELIFE EXCELSIOR REALTY INC.

200 Mccaffrey Road, Newmarket, ON L3X 1J9

200 Mccaffrey RoadNewmarket, ON L3X 1J9

Newmarket · Glenway Estates

4 + 1 bed4 bath4 parking

Renavu EstimateHigh

13% above our estimate

Estimated value: $1,190,000

MLS® N13764940RE/MAX REALTRON REALTY INC.

781 Pam Crescent, Newmarket, ON L3Y 5B7

781 Pam CrescentNewmarket, ON L3Y 5B7

Newmarket · Huron Heights-Leslie Valley

3 + 1 bed3 bath5 parking

MLS® N13851704RE/MAX HALLMARK REALTY LTD.

416 Flanagan Court, Newmarket, ON L3X 2E9

416 Flanagan CourtNewmarket, ON L3X 2E9

Newmarket · Summerhill Estates

3 + 1 bed4 bath6 parking

MLS® N14121038LPT REALTY

256 Mcbride Crescent, Newmarket, ON L3X 2W4

256 Mcbride CrescentNewmarket, ON L3X 2W4

Newmarket · Summerhill Estates

3 + 2 bed4 bath6 parking

Renavu EstimateHigh

In line with our estimate

Estimated value: $952,000

MLS® N13838834HOMELIFE/CIMERMAN REAL ESTATE LIMITED

193 Beechwood Crescent, Newmarket, ON L3Y 1W2

193 Beechwood CrescentNewmarket, ON L3Y 1W2

Newmarket · Central Newmarket

4 + 2 bed5 bath8 parking

MLS® N14116402THE AGENCY

263 Chambers Crescent, Newmarket, ON L3X 1T1

263 Chambers CrescentNewmarket, ON L3X 1T1

Newmarket · Armitage

4 + 2 bed4 bath6 parking

MLS® N13878402RE/MAX REALTRON TURNKEY REALTY

See all 71 in the full search →

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