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

Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
Contact Agent | 327 Commonwealth Avenue, Boston, MA 02115
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

$1,999,999

2
Bedrooms
1,362
Square Feet

1 Franklin Street, Unit 2307, Boston, MA 02110

Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
Contact Agent | 164 Galen Street, Unit 52, Watertown, MA 02472
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 an empty room with wooden floor and a window

$5,500

3
Bedrooms

36 Milford Street, Unit 2, Boston, MA 02118

a view of a balcony with wooden floor and fence

$5,500

4
Bedrooms

43 Greenwich Street, Boston, MA 02120