Tim O'Sullivan's Profile Photo

Tim O'Sullivan

REALTOR® | MonaLisa Team
timosullivan@compass.com
M: 917-922-2720

Social Media

About Tim
With much professional success, Tim provides a wealth of experience to his clients. In addition to his real estate achievements, Tim has served as an estate manager for some of the most affluent and discerning clients in New York City, Vail, Southampton, and Boston. Tim is also a classically trained musician and was a private chef in New York City. Tim’s diverse and accomplished background provides him with a unique perspective and an unparalleled ability to exceed his clients’ expectations.

Having been involved in real estate transactions in excess of $50 million, Tim is a seasoned negotiator and handles every transaction with great care and attention. The son of a general contractor, Tim has led numerous renovation projects and holds a genuine passion for construction and design.

Tim fully embraces Boston’s vast culinary scene, its Symphony Orchestra, and local hiking trails. Consistently seeking ways to pay-it-forward and make a positive impact, Tim’s commitment to community outreach is a devotion.

With Tim O’Sullivan as your Realtor, you can expect a professional yet friendly approach that prioritizes your needs. His local knowledge, market expertise, and love for the area make him an ideal partner in your real estate journey. Trust that Tim will guide you through every step as you find your next home and welcoming community.

Tim O'Sullivan’s Listings

$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
$2,350,000 | 133 Fayerweather Street, Unit 133, Cambridge, MA 02138
1/41
Listed By CompassUnder Agreement

$2,350,000

4
Bedrooms
3,003
Square Feet
Unavailable
Acres

133 Fayerweather Street, Unit 133, Cambridge, MA 02138

$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
$965,000 | 89 Kinnaird Street, Unit 2, Cambridge, MA 02139
1/24
Listed By CompassOpen: 6/6 01:00PM - 02:30PM

$965,000

3
Bedrooms
1,020
Square Feet

89 Kinnaird Street, Unit 2, Cambridge, MA 02139

a front view of a house with a garden
a front view of a house with a yard
a view of entryway
a dining room with furniture and wooden floor
a view of a dining room with furniture and wooden floor
a living room with furniture and a window
a living room with furniture and a flat screen tv
a living room with furniture and a flat screen tv
a living room with furniture and a flat screen tv
a kitchen with stainless steel appliances granite countertop a refrigerator a sink dishwasher a stove with wooden floor
a kitchen with stainless steel appliances granite countertop a refrigerator a stove and a wooden floors
a kitchen with stainless steel appliances granite countertop a stove a sink and a refrigerator
a kitchen with stainless steel appliances granite countertop a sink stove and microwave
a bathroom with a granite countertop sink a mirror and a shower
a view of a hallway with wooden floor and staircase
a bedroom with bed and window
a bedroom with a bed and a window
a view of a workspace with furniture and a window
a bedroom with a bed and wooden floor
a bathroom with a sink a toilet and mirror
a bathroom with a window sink and a mirror
a bedroom with a bed and a window
a bathroom with a sink and a mirror
a bedroom with a bed and a window
a bedroom with a bed and window
a view of an empty room with wooden floor and a window
a view of an entryway with wooden floor and door
a front view of a house with a garden
a view of a patio with chairs and a table
a view of a house with a yard
a picture of floor plan
1/31
Listed By CompassContingent

$950,000

3
Bedrooms
1,868
Square Feet
0.14
Acres

52 Walter Street, Boston, MA 02131

a living room with furniture a patio and a window
a living room with furniture and a window
a living room with furniture a fireplace and a large window
a living room with furniture and wooden floor
a dining room filled chandelier and wooden floor
a kitchen with stainless steel appliances granite countertop a stove a sink a refrigerator a stove a oven with a dining table and chairs
a dining room with furniture and wooden floor
a very nice looking kitchen with a large window wooden floor and stainless steel appliances
a room with wooden floor and a chandelier
a kitchen with stainless steel appliances granite countertop a refrigerator a stove and a sink
a view of a dining room with furniture and a window
a view of a dining room with furniture and wooden floor
a living room with furniture and a wooden floor
a living room with furniture and a fireplace
a bedroom with furniture and a window
a living room with furniture and a large window
a view of kitchen with furniture and wooden floor
a kitchen with stainless steel appliances white cabinets and wooden floor
a bedroom with bed and window
a bedroom with a bed and window
a bathroom with a sink toilet and shower
a view of a hallway with washer and dryer
a living room with furniture and a wooden floor
a view of a backyard with table and chairs and a large tree
a backyard of a house with lots of green space
a view of a room with gym equipment
a view of entryway with a street
a front view of a building
a black and white photo of a floor plan
1/29
Listed By CompassContingent

$650,000

1
Bedrooms
924
Square Feet

432 Norfolk Street, Unit 1H, Somerville, MA 02143

$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
$308,800 | 80 Main Street, Unit 22, Malden, MA 02148
1/21
Listed By CompassContingent

$308,800

1
Bedrooms
578
Square Feet

80 Main Street, Unit 22, Malden, MA 02148

Tim O'Sullivan’s Transactions

Past Sales
a living room with furniture and a fireplace

$2,404,850

4
Bedrooms
3,003
Square Feet

131 Fayerweather Street, Unit 131, Cambridge, MA 02138

a view of a chair and table in the balcony

$2,250,000

2
Bedrooms
1,938
Square Feet

169 Commonwealth Avenue, Unit 5, Boston, MA 02116

a living room with furniture and a floor to ceiling window

$1,905,000

4
Bedrooms
2,865
Square Feet

132 Shore Avenue, Unit 132, Quincy, MA 02169

a front view of a house with garden

$1,900,000

4
Bedrooms
2,577
Square Feet
0.12
Acres

30 Dudley Street, Cambridge, MA 02140

a front view of a house with a yard

$1,860,000

4
Bedrooms
2,437
Square Feet

32 Hall Avenue, Unit 32, Somerville, MA 02144

$1,850,000 | 15 Valentine Street, Unit 8, Cambridge, MA 02139

$1,850,000

3
Bedrooms
1,965
Square Feet

15 Valentine Street, Unit 8, Cambridge, MA 02139

a front view of a house with a yard

$1,750,000

5
Bedrooms
2,686
Square Feet
0.05
Acres

18-20 Windom Street, Somerville, MA 02144

$1,518,000 | 22 Corporal McTernan Street, Unit 3, Cambridge, MA 02139

$1,518,000

3
Bedrooms
1,673
Square Feet

22 Corporal McTernan Street, Unit 3, Cambridge, MA 02139

front view of a house with a yard

$1,515,100

3
Bedrooms
1,976
Square Feet
0.10
Acres

9 Eastern Avenue, Arlington, MA 02476

a front view of a house with garden

$1,340,000

3
Bedrooms
1,852
Square Feet
0.20
Acres

243 1st Street, Melrose, MA 02176

a front view of a residential apartment building with trees

$1,250,000

3
Bedrooms
1,605
Square Feet

49 Dartmouth Street, Unit 2, Somerville, MA 02145

a front view of a house with a yard

$1,250,000

4
Bedrooms
2,410
Square Feet
0.06
Acres

58-60 Boston Avenue, Somerville, MA 02144

$1,225,000 | 345 West Broadway, Unit 6, Boston, MA 02127

$1,225,000

2
Bedrooms
1,616
Square Feet

345 West Broadway, Unit 6, Boston, MA 02127

a living room with furniture and a large window

$1,165,000

3
Bedrooms
2,356
Square Feet

14 South Waverly Street, Unit 14, Boston, MA 02135

a living room with furniture and a window

$1,160,000

3
Bedrooms
1,459
Square Feet

454 Green Street, Unit 3, Cambridge, MA 02139

a front view of a house with a garden

$1,080,000

5
Bedrooms
3,037
Square Feet
0.39
Acres

18 Westminster Avenue, Boston, MA 02119

$1,070,000 | 6 Hamilton Road, Unit 6, Somerville, MA 02144

$1,070,000

3
Bedrooms
2,102
Square Feet

6 Hamilton Road, Unit 6, Somerville, MA 02144

$1,060,000 | 22 Ossipee Road, Unit 2, Somerville, MA 02144

$1,060,000

3
Bedrooms
1,735
Square Feet

22 Ossipee Road, Unit 2, Somerville, MA 02144

Past Rentals
a front view of a house

$5,000

4
Bedrooms

53 Gardner Street, Unit 2, Boston, MA 02134

a view of a house with backyard

$5,000

3
Bedrooms

12 Lilac Court, Unit 12, Cambridge, MA 02141

a view of front door of house with stairs

$4,600

3
Bedrooms

80 Kinnaird Street, Unit 1, Cambridge, MA 02139

a living room with stainless steel appliances furniture and a kitchen view

$4,500

2
Bedrooms

70 Prospect Street, Unit 403, Somerville, MA 02143

$4,300 | 1 Riverside Place, Unit 1, Cambridge, MA 02139

$4,300

1
Bedrooms

1 Riverside Place, Unit 1, Cambridge, MA 02139

a view of a house with a yard

$4,300

4
Bedrooms

25 Wilson Park, Unit 3, Boston, MA 02135

a view of a house with a yard

$4,000

4
Bedrooms

25 Wilson Park, Unit 2, Boston, MA 02135

a view of a house with a yard

$4,000

4
Bedrooms

25 Wilson Park, Unit 1, Boston, MA 02135

$4,000 | 11 Hill Street, Unit 2, Watertown, MA 02472

$4,000

4
Bedrooms

11 Hill Street, Unit 2, Watertown, MA 02472

$3,880 | 6 Verndale Road, Unit 2, Milton, MA 02186

$3,880

4
Bedrooms

6 Verndale Road, Unit 2, Milton, MA 02186

$3,000 | 34 Bigelow Street, Unit B, Cambridge, MA 02139

$3,000

2
Bedrooms

34 Bigelow Street, Unit B, Cambridge, MA 02139

a view of a dining room with furniture window and wooden floor

$2,850

1
Bedrooms

37 Putnam Avenue, Unit 3, Cambridge, MA 02138

a view of an empty room with wooden floor and a window

$2,400

1
Bedrooms

86 Ellery Street, Unit 6, Cambridge, MA 02138