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1666 Connecticut Ave NW 1666 Connecticut Ave NW 1,700 - 20,865 sq ft of Office Space Available in Washington, DC 20009
ALL AVAILABLE SPACES(8)
Display Rent as
- SPACE
- SIZE
- TERM
- RATE
- USE
- CONDITION
- AVAILABLE
Unique opportunity for discounted rental if space taken as-is. Fantastic elevator exposure on the front corner of the building overlooking Connecticut Avenue and R Street!
- Rate includes utilities, building services and property expenses
- High-density office layout
- Fully Fit-Out as Standard Office
- Can be combined with additional space(s) for up to 6,399 sq ft of adjacent space
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.
- Rate includes utilities, building services and property expenses
- Can be combined with additional space(s) for up to 6,399 sq ft of adjacent space
- High-density office layout
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.
- Rate includes utilities, building services and property expenses
- Space is in Excellent Condition
- High-density office layout
- Can be combined with additional space(s) for up to 12,600 sq ft of adjacent space
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.
- Rate includes utilities, building services and property expenses
- Space is in Excellent Condition
- High-density office layout
- Can be combined with additional space(s) for up to 12,600 sq ft of adjacent space
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.
- Rate includes utilities, building services and property expenses
- Space is in Excellent Condition
- High-density office layout
- Can be combined with additional space(s) for up to 12,600 sq ft of adjacent space
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.
- Rate includes utilities, building services and property expenses
- Space is in Excellent Condition
- High-density office layout
- Can be combined with additional space(s) for up to 12,600 sq ft of adjacent space
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.
- Rate includes utilities, building services and property expenses
- Space is in Excellent Condition
- High-density office layout
- Can be combined with additional space(s) for up to 12,600 sq ft of adjacent space
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.
- Rate includes utilities, building services and property expenses
- High-density office layout
- Fully Fit-Out as Standard Office
| Space | Size | Term | Rate | Space Use | Condition | Available |
| 2nd Floor, Ste 200 | 1,875 sq ft | Negotiable | £37.05 /sq ft pa £3.09 /sq ft pcm £69,477 pa £5,790 pcm | Office | Full Fit-Out | Now |
| 2nd Floor, Ste 201 | 4,524 sq ft | Negotiable | £37.05 /sq ft pa £3.09 /sq ft pcm £167,634 pa £13,969 pcm | Office | Full Fit-Out | 01/04/2026 |
| 3rd Floor, Ste 300-A | 3,700 sq ft | Negotiable | £37.05 /sq ft pa £3.09 /sq ft pcm £137,101 pa £11,425 pcm | Office | Spec Suite | Now |
| 3rd Floor, Ste 300-B | 1,700 sq ft | Negotiable | £37.05 /sq ft pa £3.09 /sq ft pcm £62,992 pa £5,249 pcm | Office | Spec Suite | Now |
| 3rd Floor, Ste 300-C | 2,500 sq ft | Negotiable | £37.05 /sq ft pa £3.09 /sq ft pcm £92,636 pa £7,720 pcm | Office | Spec Suite | Now |
| 3rd Floor, Ste 300-D | 2,500 sq ft | Negotiable | £37.05 /sq ft pa £3.09 /sq ft pcm £92,636 pa £7,720 pcm | Office | Spec Suite | Now |
| 3rd Floor, Ste 300-E | 2,200 sq ft | Negotiable | £37.05 /sq ft pa £3.09 /sq ft pcm £81,519 pa £6,793 pcm | Office | Spec Suite | Now |
| 5th Floor, Ste 500 | 1,866 sq ft | Negotiable | £37.05 /sq ft pa £3.09 /sq ft pcm £69,143 pa £5,762 pcm | Office | Full Fit-Out | Now |
2nd Floor, Ste 200
| Size |
| 1,875 sq ft |
| Term |
| Negotiable |
| Rate |
| £37.05 /sq ft pa £3.09 /sq ft pcm £69,477 pa £5,790 pcm |
| Space Use |
| Office |
| Condition |
| Full Fit-Out |
| Available |
| Now |
2nd Floor, Ste 201
| Size |
| 4,524 sq ft |
| Term |
| Negotiable |
| Rate |
| £37.05 /sq ft pa £3.09 /sq ft pcm £167,634 pa £13,969 pcm |
| Space Use |
| Office |
| Condition |
| Full Fit-Out |
| Available |
| 01/04/2026 |
3rd Floor, Ste 300-A
| Size |
| 3,700 sq ft |
| Term |
| Negotiable |
| Rate |
| £37.05 /sq ft pa £3.09 /sq ft pcm £137,101 pa £11,425 pcm |
| Space Use |
| Office |
| Condition |
| Spec Suite |
| Available |
| Now |
3rd Floor, Ste 300-B
| Size |
| 1,700 sq ft |
| Term |
| Negotiable |
| Rate |
| £37.05 /sq ft pa £3.09 /sq ft pcm £62,992 pa £5,249 pcm |
| Space Use |
| Office |
| Condition |
| Spec Suite |
| Available |
| Now |
3rd Floor, Ste 300-C
| Size |
| 2,500 sq ft |
| Term |
| Negotiable |
| Rate |
| £37.05 /sq ft pa £3.09 /sq ft pcm £92,636 pa £7,720 pcm |
| Space Use |
| Office |
| Condition |
| Spec Suite |
| Available |
| Now |
3rd Floor, Ste 300-D
| Size |
| 2,500 sq ft |
| Term |
| Negotiable |
| Rate |
| £37.05 /sq ft pa £3.09 /sq ft pcm £92,636 pa £7,720 pcm |
| Space Use |
| Office |
| Condition |
| Spec Suite |
| Available |
| Now |
3rd Floor, Ste 300-E
| Size |
| 2,200 sq ft |
| Term |
| Negotiable |
| Rate |
| £37.05 /sq ft pa £3.09 /sq ft pcm £81,519 pa £6,793 pcm |
| Space Use |
| Office |
| Condition |
| Spec Suite |
| Available |
| Now |
5th Floor, Ste 500
| Size |
| 1,866 sq ft |
| Term |
| Negotiable |
| Rate |
| £37.05 /sq ft pa £3.09 /sq ft pcm £69,143 pa £5,762 pcm |
| Space Use |
| Office |
| Condition |
| Full Fit-Out |
| Available |
| Now |
2nd Floor, Ste 200
| Size | 1,875 sq ft |
| Term | Negotiable |
| Rate | £37.05 /sq ft pa |
| Space Use | Office |
| Condition | Full Fit-Out |
| Available | Now |
Unique opportunity for discounted rental if space taken as-is. Fantastic elevator exposure on the front corner of the building overlooking Connecticut Avenue and R Street!
- Rate includes utilities, building services and property expenses
- Fully Fit-Out as Standard Office
- High-density office layout
- Can be combined with additional space(s) for up to 6,399 sq ft of adjacent space
2nd Floor, Ste 201
| Size | 4,524 sq ft |
| Term | Negotiable |
| Rate | £37.05 /sq ft pa |
| Space Use | Office |
| Condition | Full Fit-Out |
| Available | 01/04/2026 |
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.
- Rate includes utilities, building services and property expenses
- High-density office layout
- Can be combined with additional space(s) for up to 6,399 sq ft of adjacent space
3rd Floor, Ste 300-A
| Size | 3,700 sq ft |
| Term | Negotiable |
| Rate | £37.05 /sq ft pa |
| Space Use | Office |
| Condition | Spec Suite |
| Available | Now |
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.
- Rate includes utilities, building services and property expenses
- High-density office layout
- Space is in Excellent Condition
- Can be combined with additional space(s) for up to 12,600 sq ft of adjacent space
3rd Floor, Ste 300-B
| Size | 1,700 sq ft |
| Term | Negotiable |
| Rate | £37.05 /sq ft pa |
| Space Use | Office |
| Condition | Spec Suite |
| Available | Now |
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.
- Rate includes utilities, building services and property expenses
- High-density office layout
- Space is in Excellent Condition
- Can be combined with additional space(s) for up to 12,600 sq ft of adjacent space
3rd Floor, Ste 300-C
| Size | 2,500 sq ft |
| Term | Negotiable |
| Rate | £37.05 /sq ft pa |
| Space Use | Office |
| Condition | Spec Suite |
| Available | Now |
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.
- Rate includes utilities, building services and property expenses
- High-density office layout
- Space is in Excellent Condition
- Can be combined with additional space(s) for up to 12,600 sq ft of adjacent space
3rd Floor, Ste 300-D
| Size | 2,500 sq ft |
| Term | Negotiable |
| Rate | £37.05 /sq ft pa |
| Space Use | Office |
| Condition | Spec Suite |
| Available | Now |
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.
- Rate includes utilities, building services and property expenses
- High-density office layout
- Space is in Excellent Condition
- Can be combined with additional space(s) for up to 12,600 sq ft of adjacent space
3rd Floor, Ste 300-E
| Size | 2,200 sq ft |
| Term | Negotiable |
| Rate | £37.05 /sq ft pa |
| Space Use | Office |
| Condition | Spec Suite |
| Available | Now |
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.
- Rate includes utilities, building services and property expenses
- High-density office layout
- Space is in Excellent Condition
- Can be combined with additional space(s) for up to 12,600 sq ft of adjacent space
5th Floor, Ste 500
| Size | 1,866 sq ft |
| Term | Negotiable |
| Rate | £37.05 /sq ft pa |
| Space Use | Office |
| Condition | Full Fit-Out |
| Available | Now |
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.
- Rate includes utilities, building services and property expenses
- Fully Fit-Out as Standard Office
- High-density office layout
FEATURES AND AMENITIES
- Food Service
- Property Manager on Site
- Natural Light
PROPERTY FACTS
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1666 Connecticut Ave NW | 1666 Connecticut Ave NW
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