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Sunley House 45 Milk St 7,905 - 15,810 SF of Office Space Available in Boston, MA 02109

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SUBLEASE HIGHLIGHTS

  • Boutique building located in the financial district
  • Grand building lobby
  • Floor may not be subdivided
  • Outstanding area amenities, fitness and shopping
  • Equal distance for North and South station
  • High ceiling, open floor plan, conference rooms-great for technology users

ALL AVAILABLE SPACES(2)

Display Rental Rate as

  • SPACE
  • SIZE
  • TERM
  • RENTAL RATE
  • SPACE USE
  • CONDITION
  • AVAILABLE
  • 5th Floor, Ste 5th Floor
  • 7,905 SF
  • Sep 2026
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Full Build-Out
  • 30 Days

Entire 5th historic Sunley House Building is located in the financial district available for sublease. The floor may not be subdivided.

  • Sublease space available from current tenant
  • Mostly Open Floor Plan Layout
  • Conference Rooms
  • Central Air Conditioning
  • Natural Light
  • Open Floor Plan
  • Fully Built-Out as Standard Office
  • Fits 20 - 64 People
  • Can be combined with additional space(s) for up to 15,810 SF of adjacent space
  • High Ceilings
  • High Ceilings
  • Conference Rooms - Great For Technology Users
  • 6th Floor, Ste 6th Floor
  • 7,905 SF
  • Sep 2026
  • Upon Request Upon Request Upon Request Upon Request
  • Office
  • Full Build-Out
  • 30 Days

Entire 5th historic Sunley House Building located in the financial district available for sublease. The floor may not be subdivided.

  • Sublease space available from current tenant
  • Mostly Open Floor Plan Layout
  • Conference Rooms
  • Central Air Conditioning
  • Natural Light
  • Open Floor Plans
  • Fully Built-Out as Standard Office
  • Fits 20 - 64 People
  • Can be combined with additional space(s) for up to 15,810 SF of adjacent space
  • High Ceilings
  • High Ceilings
  • Conference Rooms- Great For Technology Users
Space Size Term Rental Rate Space Use Condition Available
5th Floor, Ste 5th Floor 7,905 SF Sep 2026 Upon Request Upon Request Upon Request Upon Request Office Full Build-Out 30 Days
6th Floor, Ste 6th Floor 7,905 SF Sep 2026 Upon Request Upon Request Upon Request Upon Request Office Full Build-Out 30 Days

5th Floor, Ste 5th Floor

Size
7,905 SF
Term
Sep 2026
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Full Build-Out
Available
30 Days

6th Floor, Ste 6th Floor

Size
7,905 SF
Term
Sep 2026
Rental Rate
Upon Request Upon Request Upon Request Upon Request
Space Use
Office
Condition
Full Build-Out
Available
30 Days

5th Floor, Ste 5th Floor

Size 7,905 SF
Term Sep 2026
Rental Rate Upon Request
Space Use Office
Condition Full Build-Out
Available 30 Days

Entire 5th historic Sunley House Building is located in the financial district available for sublease. The floor may not be subdivided.

  • Sublease space available from current tenant
  • Fully Built-Out as Standard Office
  • Mostly Open Floor Plan Layout
  • Fits 20 - 64 People
  • Conference Rooms
  • Can be combined with additional space(s) for up to 15,810 SF of adjacent space
  • Central Air Conditioning
  • High Ceilings
  • Natural Light
  • High Ceilings
  • Open Floor Plan
  • Conference Rooms - Great For Technology Users

6th Floor, Ste 6th Floor

Size 7,905 SF
Term Sep 2026
Rental Rate Upon Request
Space Use Office
Condition Full Build-Out
Available 30 Days

Entire 5th historic Sunley House Building located in the financial district available for sublease. The floor may not be subdivided.

  • Sublease space available from current tenant
  • Fully Built-Out as Standard Office
  • Mostly Open Floor Plan Layout
  • Fits 20 - 64 People
  • Conference Rooms
  • Can be combined with additional space(s) for up to 15,810 SF of adjacent space
  • Central Air Conditioning
  • High Ceilings
  • Natural Light
  • High Ceilings
  • Open Floor Plans
  • Conference Rooms- Great For Technology Users

PROPERTY OVERVIEW

45 Milk Street is located at 45 Milk Street in the Downtown - Financial District neighborhood, MA, Boston, 02109. The Class B Office building was completed in 1893 and features a total of 68,995 Sqft. There are 322 office spaces for lease in the Downtown - Financial District neighborhood, totaling 4,184,823 Sqft of available office space. The average asking office rent per sq. ft. in Downtown - Financial District is $40.36/sqft/year. For Class A+ office buildings the average office rate is $59/sqft/year, for Class A office buildings the average office rate is $41.07/sqft/year, for Class B office buildings the average office rate is $39.34/sqft/year, for Class C office buildings the average office rate is $17/sqft/year. In Downtown - Financial District, there are 79 class B office buildings. In Downtown - Financial District, there are a total of 20 LEED certified office buildings.

  • Atrium
  • Bus Line
  • Energy Star Labeled
  • Reception
  • On-Site Security Staff

PROPERTY FACTS

Building Type
Office
Year Built/Renovated
1893/1981
Building Height
9 Stories
Building Size
70,948 SF
Building Class
B
Typical Floor Size
7,094 SF
Unfinished Ceiling Height
12’

SELECT TENANTS

  • FLOOR
  • TENANT NAME
  • INDUSTRY
  • Multiple
  • Year Up
  • Services

SUSTAINABILITY

Energy Star Certified
83
ENERGY STAR certified buildings save energy and help protect the environment.

SUSTAINABILITY

ENERGY STAR® Energy Star is a program run by the U.S. Environmental Protection Agency (EPA) and U.S. Department of Energy (DOE) that promotes energy efficiency and provides simple, credible, and unbiased information that consumers and businesses rely on to make well-informed decisions. Thousands of industrial, commercial, utility, state, and local organizations partner with the EPA to deliver cost-saving energy efficiency solutions that protect the climate while improving air quality and protecting public health. The Energy Star score compares a building’s energy performance to similar buildings nationwide and accounts for differences in operating conditions, regional weather data, and other important considerations. Certification is given on an annual basis, so a building must maintain its high performance to be certified year to year. To be eligible for Energy Star certification, a building must earn a score of 75 or higher on EPA’s 1 – 100 scale, indicating that it performs better than at least 75 percent of similar buildings nationwide. This 1 – 100 Energy Star score is based on the actual, measured energy use of a building and is calculated within EPA’s Energy Star Portfolio Manager tool.

Walk Score®
Walker's Paradise (99)
Transit Score®
Rider's Paradise (100)
Bike Score®
Very Bikeable (85)
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.®
  • Listing ID: 18071720

  • Date on Market: 1/2/2020

  • Last Updated:

  • Address: 45 Milk St, Boston, MA 02109

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