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1666 Connecticut Ave NW
Washington, DC 20009 Dupont Circle

$7,048 - $18,756 USD/MO

Office For Lease  •  1,700+ SF

Property Details

  • Property Type Office
  • Year Built 1962
  • Total Building Size 83,469 SF
  • Tenancy Multiple
  • Building Class B
  • Zoning MU-20, RA-8
82 Transit Score
99 Walk Score

8 Spaces Available

Name Space Use Size Rent Details
2nd Floor Ste 200 Office 1,875 SF $49.75 USD/SF/YR
New conference facility + tenant lounge coming soon • Iconic presence on the Connecticut Avenue corridor — two blocks from Dupont Metro Station • Boutique floor plate with great setbacks and windowline in all directions • Three levels of below-grade parking  –  1/1,500 SF ratio • Sette Osteria on-site & exciting new retail coming soon

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Built out as: Standard Office
  • Space Type: Relet
  • In Contiguous block: 6,399 SF
2nd Floor Ste 201 Office 4,524 SF $49.75 USD/SF/YR
Space on the front corner of the second floor overlooking Connecticut Avenue with direct elevator exposure. Available 4/2026 and can be combined with Suite 200.
 New conference facility + tenant lounge coming soon • Iconic presence on the Connecticut Avenue corridor — two blocks from Dupont Metro Station • Boutique floor plate with great setbacks and windowline in all directions • Three levels of below-grade parking  –  1/1,500 SF ratio • Sette Osteria on-site & exciting new retail coming soon

  • Date available: Apr 2026
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Space Type: Relet
  • In Contiguous block: 6,399 SF
3rd Floor Ste 300-A Office 3,700 SF $49.75 USD/SF/YR
Full floor of spec suites with conference facility and tenant lounge coming soon to the third floor! Suites as small as ~1,500 RSF will be available in Q1 2026! 

Brand new suites and common areas designed by OTJ.

 New conference facility + tenant lounge coming soon • Iconic presence on the Connecticut Avenue corridor — two blocks from Dupont Metro Station • Boutique floor plate with great setbacks and windowline in all directions • Three levels of below-grade parking  –  1/1,500 SF ratio • Sette Osteria on-site & exciting new retail coming soon

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Space Type: Relet
  • In Contiguous block: 12,600 SF
3rd Floor Ste 300-B Office 1,700 SF $49.75 USD/SF/YR
Full floor of spec suites with conference facility and tenant lounge coming soon to the third floor! Suites as small as ~1,500 RSF will be available in Q1 2026! 

Brand new suites and common areas designed by OTJ.

 New conference facility + tenant lounge coming soon • Iconic presence on the Connecticut Avenue corridor — two blocks from Dupont Metro Station • Boutique floor plate with great setbacks and windowline in all directions • Three levels of below-grade parking  –  1/1,500 SF ratio • Sette Osteria on-site & exciting new retail coming soon

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Space Type: Relet
  • In Contiguous block: 12,600 SF
3rd Floor Ste 300-C Office 2,500 SF $49.75 USD/SF/YR
Full floor of spec suites with conference facility and tenant lounge coming soon to the third floor! Suites as small as ~1,500 RSF will be available in Q1 2026! 

Brand new suites and common areas designed by OTJ.

 New conference facility + tenant lounge coming soon • Iconic presence on the Connecticut Avenue corridor — two blocks from Dupont Metro Station • Boutique floor plate with great setbacks and windowline in all directions • Three levels of below-grade parking  –  1/1,500 SF ratio • Sette Osteria on-site & exciting new retail coming soon

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Space Type: Relet
  • In Contiguous block: 12,600 SF
3rd Floor Ste 300-D Office 2,500 SF $49.75 USD/SF/YR
Full floor of spec suites with conference facility and tenant lounge coming soon to the third floor! Suites as small as ~1,500 RSF will be available in Q1 2026! 

Brand new suites and common areas designed by OTJ.

 New conference facility + tenant lounge coming soon • Iconic presence on the Connecticut Avenue corridor — two blocks from Dupont Metro Station • Boutique floor plate with great setbacks and windowline in all directions • Three levels of below-grade parking  –  1/1,500 SF ratio • Sette Osteria on-site & exciting new retail coming soon

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Space Type: Relet
  • In Contiguous block: 12,600 SF
3rd Floor Ste 300-E Office 2,200 SF $49.75 USD/SF/YR
Full floor of spec suites with conference facility and tenant lounge coming soon to the third floor! Suites as small as ~1,500 RSF will be available in Q1 2026! 

Brand new suites and common areas designed by OTJ.

 New conference facility + tenant lounge coming soon • Iconic presence on the Connecticut Avenue corridor — two blocks from Dupont Metro Station • Boutique floor plate with great setbacks and windowline in all directions • Three levels of below-grade parking  –  1/1,500 SF ratio • Sette Osteria on-site & exciting new retail coming soon

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Space Type: Relet
  • In Contiguous block: 12,600 SF
5th Floor Ste 500 Office 1,866 SF $49.75 USD/SF/YR
Planned future spec suite to be built in conjunction with the third floor suites - set for Spring 2026 delivery! 

Unique opportunity for discounted rental if space taken as-is prior to construction start. Second-generation space in good condition with three large windowed offices on the front of the 5th floor overlooking Connecticut Avenue.
 New conference facility + tenant lounge coming soon • Iconic presence on the Connecticut Avenue corridor — two blocks from Dupont Metro Station • Boutique floor plate with great setbacks and windowline in all directions • Three levels of below-grade parking  –  1/1,500 SF ratio • Sette Osteria on-site & exciting new retail coming soon

  • Date available: Now
  • Lease term: Negotiable
  • Service type: Full Service Gross
  • Built out as: Standard Office
  • Space Type: Relet

Property Flyers

Amenities

  • Food Service
  • Property Manager on Site
  • Restaurant
  • Central Heating
  • Natural Light
  • Air Conditioning

Public Transportation

Commuter RailDriveWalkDistance
4 (Fredericksburg Line - Virginia Railway Express, Manassas Line - Virginia Railway Express) 5 min - 2.9 mi
Union Station (Brunswick Line - Maryland Area Regional Commuter Trains (The MARC), Camden Line - Maryland Area Regional Commuter Trains (The MARC), Fredericksburg Line - Maryland Area Regional Commuter Trains (The MARC), Manassas Line - Maryland Area Regional Commuter Trains (The MARC), Penn Line - Maryland Area Regional Commuter Trains (The MARC), Red Line - Maryland Area Regional Commuter Trains (The MARC)) 6 min - 3.1 mi
Transit/SubwayDriveWalkDistance
Dupont Circle (Red Line - Washington Metropolitan Area Transit Authority Metrorail (Metrorail)) 1 min 4 min 0.2 mi
Farragut North (Red Line - Washington Metropolitan Area Transit Authority Metrorail (Metrorail)) 1 min 14 min 0.7 mi
Farragut West (Blue Line - Washington Metropolitan Area Transit Authority Metrorail (Metrorail), Orange Line - Washington Metropolitan Area Transit Authority Metrorail (Metrorail), Silver Line - Washington Metropolitan Area Transit Authority Metrorail (Metrorail)) 1 min 17 min 0.9 mi
Foggy Bottom-Gwu (Blue Line - Washington Metropolitan Area Transit Authority Metrorail (Metrorail), Orange Line - Washington Metropolitan Area Transit Authority Metrorail (Metrorail), Silver Line - Washington Metropolitan Area Transit Authority Metrorail (Metrorail)) 2 min 19 min 1.0 mi
Woodley Park-Zoo/Adams Morgan (Red Line - Washington Metropolitan Area Transit Authority Metrorail (Metrorail)) 3 min 19 min 1.0 mi
AirportDriveWalkDistance
Ronald Reagan Washington Ntl 11 min - 6.2 mi
Washington Dulles International 43 min - 26.7 mi
Baltimore/Washington International Thurgood Marshall 49 min - 32.7 mi

Parking Details

Parking Available: Yes
Reserved: No
Type: Surface
Included in Rent: Yes
Merrill Turnbull 202-513-6713 Lincoln Property Company
Merrill Turnbull 202-513-6713 Lincoln Property Company