Thea Kaltsas's Profile Photo

Thea Kaltsas

Lefkothea Kaltsas, Realtor®
thea.kaltsas@compass.com
M: 617-299-0388

Social Media

Specialties

Languages Spoken:
  • English
  • Greek
About Thea

For Thea, helping clients find their perfect home is more than a job—it’s a calling. With a background shaped by living across Europe and the U.S., she brings a global perspective and a deep understanding of what it means to relocate and start fresh.

Based in Boston, Thea has built a strong track record in both sales and luxury rentals, collaborating with top firms to secure multi-million-dollar deals for local and international clients alike. Her expertise extends to guiding individuals and families through the complexities of relocation, ensuring every transition feels seamless and supported.

Known for her warmth, integrity, and personalized approach, Thea provides thoughtful, end-to-end service that helps clients feel at home—wherever life takes them.


To go to Thea's current listings, please scroll down below to the Sales or Rental tabs!

Thea Kaltsas’ Listings

a view of an empty room with glass door and wooden floor
a view of an empty room with wooden floor fireplace and a window
a view of empty room with wooden floor and fan
a bathroom with a sink a mirror and a shower
an empty room with windows and fireplace
a view of empty room with fireplace and shower
a view of an empty room
a bathroom with a toilet a sink and mirror
a view of an empty room with empty shelves
a view of an empty room with wooden floor
an empty room with windows
a view of a living room and dining room
a view of livingroom with furniture and wooden floor
a view of a big room with wooden floor and windows
a view of an empty room with wooden floor fireplace and a window
a view of a room with wooden floor and windows
a view of an entryway with wooden floor
a bathroom with a sink a toilet and mirror
a room with window and a wooden floor
a view of an empty room
a bathroom with a granite countertop sink and a mirror
a view of closet area with wooden floor
a view of an empty room with wooden floor
a view of an empty room with wooden floor
a view of staircase with white walls and white walls
a utility room with dryer and washer
1/26
Compass Coming Soon

Contact Agent

5
Bedrooms
Unavailable
Square Feet

327 Commonwealth Avenue, Boston, MA 02115

a living room with furniture and a flat screen tv
a living room with furniture and a flat screen tv
a living room with a large window and walk in closet
a view of a balcony
a picture of city view
a living room with furniture and a couch
a kitchen with stainless steel appliances a stove sink and cabinets
a large living room with a table chairs and a refrigerator
a kitchen with stainless steel appliances a sink stove and refrigerator
a kitchen with a table and chairs in it
a bathroom with a tub and shower
a bathroom with a sink and a mirror
a view of a bathroom with a bathroom
a bedroom with a bed and a large window
a bedroom with a large bed and a window
a view of balcony with city view
a view of a bathroom from a hallway
a bathroom with a shower sink and mirror
a large bed sitting in a bedroom next to a window
a bedroom with a bed and a dresser
a bedroom with a bed and a flat screen tv
a bedroom with a bed and a window
a view of balcony with wooden floor and fence
a view of storage and utility room
a bathroom with a bathtub and shower
a bathroom with a tub sink and mirror
a bathroom with a granite countertop sink a toilet a vanity and mirror
1/27
Listed By Compass

$1,950,000

2
Bedrooms
1,362
Square Feet

1 Franklin Street, Unit 2307, Boston, MA 02110

a kitchen with granite countertop white cabinets stainless steel appliances and wooden floor
a kitchen with stainless steel appliances granite countertop a sink and a stove
a kitchen with granite countertop white cabinets and white appliances
a kitchen with a refrigerator and a stove top oven
a kitchen with granite countertop a refrigerator stove and white cabinets
a kitchen with a table chairs refrigerator and microwave
a living room with furniture and a flat screen tv
a living room with furniture and a window
a living room with furniture and a rug
a outdoor view with a seating space
a bathroom with a granite countertop sink toilet and shower
a view of a hallway with wooden floor and furniture
a bedroom with a bed and a window
a bedroom with a bed and a window
a bedroom with a bed and a dresser
a utility room with a stove a sink and dishwasher
a view of a hallway with white walls
a view of a swimming pool with a patio
a front view of a building
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
1/20
Compass Coming Soon

Contact Agent

1
Bedrooms
670
Square Feet

164 Galen Street, Unit 52, Watertown, MA 02472

Thea Kaltsas’ Transactions

Past Sales

$20,566,000

398
Bedrooms
391
Bathrooms
260,246
Square Feet

204 Arsenal Street, Watertown, MA 02472

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

$2,750,000

2
Bedrooms
2,036
Square Feet

1 Avery Street, Unit PH1D, Boston, MA 02111

$2,047,000 | 1 Franklin Street, Unit 2307, Boston, MA 02110

$2,047,000

2
Bedrooms
1,362
Square Feet

1 Franklin Street, Unit 2307, Boston, MA 02110

a front view of a house with a yard and garage

$1,765,000

5
Bedrooms
3,136
Square Feet
0.34
Acres

6 Kenilworth Circle, Wellesley, MA 02482

$805,000 | 29 Grove Lane, Unit 29, Burlington, MA 01803

$805,000

2
Bedrooms
2,485
Square Feet

29 Grove Lane, Unit 29, Burlington, MA 01803

a front view of a house with balcony

$764,000

3
Bedrooms
2,163
Square Feet

38 Florence Street, Unit 2, Boston, MA 02131

$750,000 | 3 Avery Street, Unit 904, Boston, MA 02111

$750,000

2
Bedrooms
1,751
Square Feet

3 Avery Street, Unit 904, Boston, MA 02111

$749,000 | 100 Jamaica Street, Unit 2, Boston, MA 02130

$749,000

3
Bedrooms
1,131
Square Feet

100 Jamaica Street, Unit 2, Boston, MA 02130

a living room with furniture and a large window

$680,000

1
Bedrooms
833
Square Feet

257 Northampton Street, Unit 509, Boston, MA 02118

a front view of a brick house with a yard

$507,000

2
Bedrooms
766
Square Feet

1718 Commonwealth Avenue, Unit 7, Boston, MA 02135

$505,000 | 29 Grove Lane, Unit 29, Burlington, MA 01803

$505,000

2
Bedrooms
2,000
Square Feet

29 Grove Lane, Unit 29, Burlington, MA 01803

a front view of a house with a garden

$424,900

4
Bedrooms
1,319
Square Feet

89 Broad Street, Unit 1, Lynn, MA 01902

a kitchen with stainless steel appliances granite countertop a stove a sink dishwasher and a microwave oven with wooden floor

$400,000

1
Bedrooms
670
Square Feet

164 Galen Street, Unit 52, Watertown, MA 02472

$360,000 | 119 Chelmsford Street, Lowell, MA 01851

$360,000

2
Bedrooms
3,450
Square Feet
0.05
Acres

119 Chelmsford Street, Lowell, MA 01851

a view of a dining room with furniture and wooden floor

$355,000

1
Bedrooms
679
Square Feet

10 Coffey Street, Unit 29, Boston, MA 02122

Past Rentals
an aerial view of a house

$10,950

4
Bedrooms

902 Commonwealth Avenue, Unit 902, Newton, MA 02459

a living room with furniture and a fireplace

$10,500

3
Bedrooms

3 Byron Street, Boston, MA 02108

a living room with furniture wooden floor and a large window

$10,000

3
Bedrooms

1 Avery Street, Unit 16B, Boston, MA 02111

a kitchen with stainless steel appliances a sink stove and cabinets

$10,000

3
Bedrooms

81 St Botolph Street, Unit 3, Boston, MA 02116

a kitchen with stainless steel appliances a sink stove and cabinets

$9,750

3
Bedrooms

81 St Botolph Street, Unit 3, Boston, MA 02116

a kitchen with stainless steel appliances granite countertop a sink stove and refrigerator

$9,500

3
Bedrooms

580 Washington Street, Unit 10B, Boston, MA 02111

a kitchen with stainless steel appliances granite countertop a sink stove and microwave

$9,000

3
Bedrooms

81 St Botolph Street, Unit PH, Boston, MA 02116

a view of a livingroom with wooden floor and a fireplace

$8,500

3
Bedrooms

29 Greenwich Park, Unit 2, Boston, MA 02118

$8,000 | 327 Commonwealth Avenue, Unit 4, Boston, MA 02115

$8,000

2
Bedrooms

327 Commonwealth Avenue, Unit 4, Boston, MA 02115

$7,569 | 1 Canal Street, Unit PH 1104, Boston, MA 02114

$7,569

2
Bedrooms

1 Canal Street, Unit PH 1104, Boston, MA 02114

$7,500 | 188 Brookline Avenue, Unit 24B, Boston, MA 02215

$7,500

2
Bedrooms

188 Brookline Avenue, Unit 24B, Boston, MA 02215

a view of a city with tall buildings

$6,500

3
Bedrooms

113 Appleton Street, Unit 3, Boston, MA 02116

$6,000 | 113 Appleton Street, Unit 3, Boston, MA 02116

$6,000

3
Bedrooms
1,500
Square Feet

113 Appleton Street, Unit 3, Boston, MA 02116

$6,000 | 1 Franklin Street, Unit 1405, Boston, MA 02110

$6,000

2
Bedrooms

1 Franklin Street, Unit 1405, Boston, MA 02110

$5,800 | 4 Charlesgate East, Unit 402, Boston, MA 02215

$5,800

3
Bedrooms

4 Charlesgate East, Unit 402, Boston, MA 02215

$5,500 | 97 A Appleton Street, Unit A, Boston, MA 02116

$5,500

2
Bedrooms

97 A Appleton Street, Unit A, Boston, MA 02116

a view of a balcony with wooden floor and fence

$5,500

4
Bedrooms

43 Greenwich Street, Boston, MA 02120

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

$5,500

3
Bedrooms

36 Milford Street, Unit 2, Boston, MA 02118