1 Monument Sq
Office1 Monument Sq, Portland, ME 04101
- Type
- Lease
- Status
- Active
- Asking Rate
- $22.00/SF Modified Gross
- Lease Type
- Modified gross
- List Date
- May 13, 2026
- Days on Market
- 48
- Last Verified
- Jun 25, 2026
12,671± SF Class A Sublease
We are pleased to offer for sublease a 12,671± SF, full floor, Class-A office suite at one of Portland’s most prestigious buildings, One Monument Square. This building is located in the heart of the Portland’s Downtown Financial and Business District, adjacent to Monument Square. The abundant amenities of Portland’s Old Port, Arts District and working waterfront are all within walking distance. The 4th floor available space is currently leased to Dechra, who fully renovated the floor in 2014. The space features open work areas, private offices, abundant natural light, a breakroom/kitchen area, conference rooms, dedicated men’s and women’s restrooms and direct elevator access. We are also offering a $250k T.I. package, see broker for details.
Space Details
- Floor
- 4
- Suite
- Floor 4
- Available SF
- 12,671 SF
- Primary Use
- Office
- Postal Address
- One Monument Square
- Type
- Office
- Subtype
- General
- Building Class
- Class A
- Size
- 124,658 SF
- Acreage
- 0.35 Acres
- Occupancy Type
- Multi Tenant
- Year Built
- 1970
- Year Renovated
- 2010
- Floors
- 10
- Zoning
- B3
- County
- Cumberland
- Submarket
- Portland-South Portland
- Type
- Lease
- Status
- Active
- Asking Rate
- $22.00/SF Modified Gross
- Lease Type
- Modified gross
- List Date
- May 13, 2026
- Days on Market
- 48
- Last Verified
- Jun 25, 2026
12,671± SF Class A Sublease
We are pleased to offer for sublease a 12,671± SF, full floor, Class-A office suite at one of Portland’s most prestigious buildings, One Monument Square. This building is located in the heart of the Portland’s Downtown Financial and Business District, adjacent to Monument Square. The abundant amenities of Portland’s Old Port, Arts District and working waterfront are all within walking distance. The 4th floor available space is currently leased to Dechra, who fully renovated the floor in 2014. The space features open work areas, private offices, abundant natural light, a breakroom/kitchen area, conference rooms, dedicated men’s and women’s restrooms and direct elevator access. We are also offering a $250k T.I. package, see broker for details.
Space Details
- Floor
- 4
- Suite
- Floor 4
- Available SF
- 12,671 SF
- Primary Use
- Office
- Postal Address
- One Monument Square
- Type
- Office
- Subtype
- General
- Building Class
- Class A
- Size
- 124,658 SF
- Acreage
- 0.35 Acres
- Occupancy Type
- Multi Tenant
- Year Built
- 1970
- Year Renovated
- 2010
- Floors
- 10
- Zoning
- B3
- County
- Cumberland
- Submarket
- Portland-South Portland