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The Thomas Block 100 Commercial St 1,532 - 13,634 SF of Office Space Available in Portland, ME 04101

Office Spaces Maine Portland 100 Commercial St, Portland, ME 04101

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ALL AVAILABLE SPACES(6)

Display Rental Rate as

  • SPACE
  • SIZE
  • TERM
  • RENTAL RATE
  • SPACE USE
  • CONDITION
  • AVAILABLE
  • 2nd Floor, Ste 202
  • 1,596 SF
  • Negotiable
  • $28.75 /SF/YR $2.40 /SF/MO $45,885 /YR $3,824 /MO
  • Office
  • -
  • Now

Four (4) offices, open area and reception area

  • Listed rate may not include certain utilities, building services and property expenses
  • Reception Area
  • 4 Private Offices
  • 2nd Floor, Ste 204/206/208
  • 4,250 SF
  • Negotiable
  • $34.00 /SF/YR $2.83 /SF/MO $144,500 /YR $12,042 /MO
  • Office
  • -
  • Now

THE THOMAS BLOCK • Suites vary from 1,532± SF - 4,250± SF offices • Historic brick and stone building • Water views or Commercial Street views • On-site property management • Parking spaces available for lease at the Fore Street Garage

  • Listed rate may not include certain utilities, building services and property expenses
  • 3rd Floor, Ste 305/307
  • 1,614 SF
  • Negotiable
  • $25.75 /SF/YR $2.15 /SF/MO $41,561 /YR $3,463 /MO
  • Office
  • -
  • Now
100 Commercial St, Portland, ME for lease Building Photo- Image 1 of 1
Building Photo

THE THOMAS BLOCK Suites vary from 371± SF - 2,050± SF offices Historic brick and stone building Water views or Commercial Street views On-site property management Parking spaces available for lease at the Fore Street Garage

  • Listed rate may not include certain utilities, building services and property expenses
  • 4th Floor, Ste 403, 405 & 407
  • 2,592 SF
  • Negotiable
  • $25.75 /SF/YR $2.15 /SF/MO $66,744 /YR $5,562 /MO
  • Office
  • -
  • Now
100 Commercial St, Portland, ME for lease Building Photo- Image 1 of 1
Building Photo

THE THOMAS BLOCK • Suites vary from 371± SF - 2,592± SF offices • Historic brick and stone building • Water views or Commercial Street views • On-site property management • Parking spaces available for lease at the Fore Street Garage

  • Listed rate may not include certain utilities, building services and property expenses
  • 4th Floor, Ste 410/412
  • 2,050 SF
  • Negotiable
  • $25.00 /SF/YR $2.08 /SF/MO $51,250 /YR $4,271 /MO
  • Office
  • -
  • Now
  • Listed rate may not include certain utilities, building services and property expenses
  • 4th Floor, Ste 411/415
  • 1,532 SF
  • Negotiable
  • $25.75 /SF/YR $2.15 /SF/MO $39,449 /YR $3,287 /MO
  • Office
  • -
  • Now

Open concept with reception area, server room, two restrooms

  • Listed rate may not include certain utilities, building services and property expenses
  • Private Restrooms
  • Reception Area
Space Size Term Rental Rate Space Use Condition Available
2nd Floor, Ste 202 1,596 SF Negotiable $28.75 /SF/YR $2.40 /SF/MO $45,885 /YR $3,824 /MO Office - Now
2nd Floor, Ste 204/206/208 4,250 SF Negotiable $34.00 /SF/YR $2.83 /SF/MO $144,500 /YR $12,042 /MO Office - Now
3rd Floor, Ste 305/307 1,614 SF Negotiable $25.75 /SF/YR $2.15 /SF/MO $41,561 /YR $3,463 /MO Office - Now
4th Floor, Ste 403, 405 & 407 2,592 SF Negotiable $25.75 /SF/YR $2.15 /SF/MO $66,744 /YR $5,562 /MO Office - Now
4th Floor, Ste 410/412 2,050 SF Negotiable $25.00 /SF/YR $2.08 /SF/MO $51,250 /YR $4,271 /MO Office - Now
4th Floor, Ste 411/415 1,532 SF Negotiable $25.75 /SF/YR $2.15 /SF/MO $39,449 /YR $3,287 /MO Office - Now

2nd Floor, Ste 202

Size
1,596 SF
Term
Negotiable
Rental Rate
$28.75 /SF/YR $2.40 /SF/MO $45,885 /YR $3,824 /MO
Space Use
Office
Condition
-
Available
Now

2nd Floor, Ste 204/206/208

Size
4,250 SF
Term
Negotiable
Rental Rate
$34.00 /SF/YR $2.83 /SF/MO $144,500 /YR $12,042 /MO
Space Use
Office
Condition
-
Available
Now

3rd Floor, Ste 305/307

Size
1,614 SF
Term
Negotiable
Rental Rate
$25.75 /SF/YR $2.15 /SF/MO $41,561 /YR $3,463 /MO
Space Use
Office
Condition
-
Available
Now

4th Floor, Ste 403, 405 & 407

Size
2,592 SF
Term
Negotiable
Rental Rate
$25.75 /SF/YR $2.15 /SF/MO $66,744 /YR $5,562 /MO
Space Use
Office
Condition
-
Available
Now

4th Floor, Ste 410/412

Size
2,050 SF
Term
Negotiable
Rental Rate
$25.00 /SF/YR $2.08 /SF/MO $51,250 /YR $4,271 /MO
Space Use
Office
Condition
-
Available
Now

4th Floor, Ste 411/415

Size
1,532 SF
Term
Negotiable
Rental Rate
$25.75 /SF/YR $2.15 /SF/MO $39,449 /YR $3,287 /MO
Space Use
Office
Condition
-
Available
Now

2nd Floor, Ste 202

Size 1,596 SF
Term Negotiable
Rental Rate $28.75 /SF/YR
Space Use Office
Condition -
Available Now

Four (4) offices, open area and reception area

  • Listed rate may not include certain utilities, building services and property expenses
  • 4 Private Offices
  • Reception Area

2nd Floor, Ste 204/206/208

Size 4,250 SF
Term Negotiable
Rental Rate $34.00 /SF/YR
Space Use Office
Condition -
Available Now

THE THOMAS BLOCK • Suites vary from 1,532± SF - 4,250± SF offices • Historic brick and stone building • Water views or Commercial Street views • On-site property management • Parking spaces available for lease at the Fore Street Garage

  • Listed rate may not include certain utilities, building services and property expenses
1 of 1
VIDEOS
MATTERPORT 3D EXTERIOR
MATTERPORT 3D TOUR
PHOTOS
STREET VIEW STREET
MAP
100 Commercial St, Portland, ME for lease Building Photo- Image 1 of 1
100 Commercial-2009

3rd Floor, Ste 305/307

100 Commercial St, Portland, ME for lease Building Photo- Image 1 of 1
Building Photo
Size 1,614 SF
Term Negotiable
Rental Rate $25.75 /SF/YR
Space Use Office
Condition -
Available Now

THE THOMAS BLOCK Suites vary from 371± SF - 2,050± SF offices Historic brick and stone building Water views or Commercial Street views On-site property management Parking spaces available for lease at the Fore Street Garage

  • Listed rate may not include certain utilities, building services and property expenses
1 of 1
VIDEOS
MATTERPORT 3D EXTERIOR
MATTERPORT 3D TOUR
PHOTOS
STREET VIEW STREET
MAP
100 Commercial St, Portland, ME for lease Building Photo- Image 1 of 1
IMG_0627

4th Floor, Ste 403, 405 & 407

100 Commercial St, Portland, ME for lease Building Photo- Image 1 of 1
Building Photo
Size 2,592 SF
Term Negotiable
Rental Rate $25.75 /SF/YR
Space Use Office
Condition -
Available Now

THE THOMAS BLOCK • Suites vary from 371± SF - 2,592± SF offices • Historic brick and stone building • Water views or Commercial Street views • On-site property management • Parking spaces available for lease at the Fore Street Garage

  • Listed rate may not include certain utilities, building services and property expenses

4th Floor, Ste 410/412

Size 2,050 SF
Term Negotiable
Rental Rate $25.00 /SF/YR
Space Use Office
Condition -
Available Now

  • Listed rate may not include certain utilities, building services and property expenses

4th Floor, Ste 411/415

Size 1,532 SF
Term Negotiable
Rental Rate $25.75 /SF/YR
Space Use Office
Condition -
Available Now

Open concept with reception area, server room, two restrooms

  • Listed rate may not include certain utilities, building services and property expenses
  • Reception Area
  • Private Restrooms

PROPERTY OVERVIEW

THE THOMAS BLOCK • Suites vary from 1,532± SF - 4,250± SF offices • Historic brick and stone building • Water views or Commercial Street views • On-site property management • Parking spaces available for lease at the Fore Street Garage

  • Signage

PROPERTY FACTS

Building Type
Office
Year Built
1900
Building Height
4 Stories
Building Size
61,657 SF
Building Class
B
Typical Floor Size
19,000 SF
Unfinished Ceiling Height
10’
Parking
Surface Parking
Covered Parking

ATTACHMENTS

Commercial St_100 Portland_FOR LEASE
1 1
Walk Score®
Very Walkable (86)
Bike Score®
Very Bikeable (80)
What is a Walk Score®, Transit Score® & Bike Score®?
Walk Score® measures the walkability of any address.
Transit Score® measures access to public transit.
Bike Score® measures bikeability of a location.
What is a Walk Score®
, Transit Score® & Bike Score?
Walk Score® measures the walkability
of any address. Transit Score®
measures access to public transit. Bike Score®
measures bikeability of a location.®
Learn How It Works Detailed Scores
(207) 772-0088

Still interested?

Contact the broker for more information about this property

CONTACT

  • Listing ID: 29180115

  • Date on Market: 8/5/2025

  • Last Updated:

  • Address: 100 Commercial St, Portland, ME 04101

More public record information on 100 Commercial St, Portland, ME 04101

The Waterfront Office Property at 100 Commercial St, Portland, ME 04101 is currently available. Contact Malone Commercial Brokers for more information.

OFFICE PROPERTIES IN NEARBY NEIGHBORHOODS

NEARBY LISTINGS

1 of 3
VIDEOS
MATTERPORT 3D EXTERIOR
MATTERPORT 3D TOUR
PHOTOS
STREET VIEW STREET
MAP
100 Commercial St, Portland, ME for lease Building Photo- Image 1 of 3
Commercial-100-May09
100 Commercial St, Portland, ME for lease Building Photo- Image 2 of 3
IMG_0627
1 of 1

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The Thomas Block | 100 Commercial St
(207) 772-0088 x

The Thomas Block | 100 Commercial St

Peter Harrington
(207) 772-0088

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