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20 Mass 20 Massachusetts Ave NW 10,000 - 180,604 SF of 5-Star Office Space Available in Washington, DC 20529



Highlights
- New, distinctive office space presenting an HQ opportunity across the top four floors with efficient 46,000 SF floorplates and unmatched views.
- Well positioned along Massachusetts Avenue, one of DC's most notable boulevards, reach the people and places that matter within a short walk.
- Top-tier amenities include a penthouse lounge, outdoor terrace, fully equipped fitness center, and state-of-the-art 50-person conference center.
- Office users will enjoy the experiential retail options on the ground floor, sure to draw in restaurateurs, retailers, and boutique coffee shops.
- Home to the 271-room luxury Royal Sonesta hotel, invigorating 20 Mass with a sustained energy that transitions from sunup to sundown.
All Available Spaces(4)
Display Rental Rate as
- Space
- Size
- Term
- Rental Rate
- Space Use
- Condition
- Available
Large upper floor availability in fully renovated Building! Excellent window line with floor to ceiling glass and NO deadwall. Full amenities with fitness center, multiple conferencing, roof top deck, and tenant only lounge. Over 10,000 SF of ground floor retail including Bistro Du Jour which opened in Fall of 2023.
- Lease rate does not include utilities, property expenses or building services
- Space is in Excellent Condition
- Excellent window line
- Open Floor Plan Layout
- Can be combined with additional space(s) for up to 180,604 SF of adjacent space
Large upper floor availability in fully renovated Building! Excellent window line with floor to ceiling glass and NO deadwall. Full amenities with fitness center, multiple conferencing, roof top deck, and tenant only lounge. Over 10,000 SF of ground floor retail including Bistro Du Jour which opened in Fall of 2023.
- Lease rate does not include utilities, property expenses or building services
- Space is in Excellent Condition
- Excellent window line
- Open Floor Plan Layout
- Can be combined with additional space(s) for up to 180,604 SF of adjacent space
Large upper floor availability in fully renovated Building! Excellent window line with floor to ceiling glass and NO deadwall. Full amenities with fitness center, multiple conferencing, roof top deck, and tenant only lounge. Over 10,000 SF of ground floor retail including Bistro Du Jour which opened in Fall of 2023.
- Lease rate does not include utilities, property expenses or building services
- Space is in Excellent Condition
- Excellent window line
- Open Floor Plan Layout
- Can be combined with additional space(s) for up to 180,604 SF of adjacent space
Large upper floor availability in fully renovated Building! Excellent window line with floor to ceiling glass and NO deadwall. Full amenities with fitness center, multiple conferencing, roof top deck, and tenant only lounge. Over 10,000 SF of ground floor retail including Bistro Du Jour which opened in Fall of 2023.
- Lease rate does not include utilities, property expenses or building services
- Space is in Excellent Condition
- Excellent window line
- Open Floor Plan Layout
- Can be combined with additional space(s) for up to 180,604 SF of adjacent space
| Space | Size | Term | Rental Rate | Space Use | Condition | Available |
| 7th Floor | 10,000-45,207 SF | Negotiable | $49.50 /SF/YR $4.13 /SF/MO $2,237,747 /YR $186,479 /MO | Office | Shell Space | Now |
| 8th Floor | 10,000-45,207 SF | Negotiable | $49.50 /SF/YR $4.13 /SF/MO $2,237,747 /YR $186,479 /MO | Office | Shell Space | Now |
| 9th Floor | 10,000-45,163 SF | Negotiable | $51.50 /SF/YR $4.29 /SF/MO $2,325,895 /YR $193,825 /MO | Office | Shell Space | Now |
| 10th Floor | 10,000-45,027 SF | Negotiable | $51.50 /SF/YR $4.29 /SF/MO $2,318,891 /YR $193,241 /MO | Office | Shell Space | Now |
7th Floor
| Size |
| 10,000-45,207 SF |
| Term |
| Negotiable |
| Rental Rate |
| $49.50 /SF/YR $4.13 /SF/MO $2,237,747 /YR $186,479 /MO |
| Space Use |
| Office |
| Condition |
| Shell Space |
| Available |
| Now |
8th Floor
| Size |
| 10,000-45,207 SF |
| Term |
| Negotiable |
| Rental Rate |
| $49.50 /SF/YR $4.13 /SF/MO $2,237,747 /YR $186,479 /MO |
| Space Use |
| Office |
| Condition |
| Shell Space |
| Available |
| Now |
9th Floor
| Size |
| 10,000-45,163 SF |
| Term |
| Negotiable |
| Rental Rate |
| $51.50 /SF/YR $4.29 /SF/MO $2,325,895 /YR $193,825 /MO |
| Space Use |
| Office |
| Condition |
| Shell Space |
| Available |
| Now |
10th Floor
| Size |
| 10,000-45,027 SF |
| Term |
| Negotiable |
| Rental Rate |
| $51.50 /SF/YR $4.29 /SF/MO $2,318,891 /YR $193,241 /MO |
| Space Use |
| Office |
| Condition |
| Shell Space |
| Available |
| Now |
7th Floor
| Size | 10,000-45,207 SF |
| Term | Negotiable |
| Rental Rate | $49.50 /SF/YR |
| Space Use | Office |
| Condition | Shell Space |
| Available | Now |
Large upper floor availability in fully renovated Building! Excellent window line with floor to ceiling glass and NO deadwall. Full amenities with fitness center, multiple conferencing, roof top deck, and tenant only lounge. Over 10,000 SF of ground floor retail including Bistro Du Jour which opened in Fall of 2023.
- Lease rate does not include utilities, property expenses or building services
- Open Floor Plan Layout
- Space is in Excellent Condition
- Can be combined with additional space(s) for up to 180,604 SF of adjacent space
- Excellent window line
8th Floor
| Size | 10,000-45,207 SF |
| Term | Negotiable |
| Rental Rate | $49.50 /SF/YR |
| Space Use | Office |
| Condition | Shell Space |
| Available | Now |
Large upper floor availability in fully renovated Building! Excellent window line with floor to ceiling glass and NO deadwall. Full amenities with fitness center, multiple conferencing, roof top deck, and tenant only lounge. Over 10,000 SF of ground floor retail including Bistro Du Jour which opened in Fall of 2023.
- Lease rate does not include utilities, property expenses or building services
- Open Floor Plan Layout
- Space is in Excellent Condition
- Can be combined with additional space(s) for up to 180,604 SF of adjacent space
- Excellent window line
9th Floor
| Size | 10,000-45,163 SF |
| Term | Negotiable |
| Rental Rate | $51.50 /SF/YR |
| Space Use | Office |
| Condition | Shell Space |
| Available | Now |
Large upper floor availability in fully renovated Building! Excellent window line with floor to ceiling glass and NO deadwall. Full amenities with fitness center, multiple conferencing, roof top deck, and tenant only lounge. Over 10,000 SF of ground floor retail including Bistro Du Jour which opened in Fall of 2023.
- Lease rate does not include utilities, property expenses or building services
- Open Floor Plan Layout
- Space is in Excellent Condition
- Can be combined with additional space(s) for up to 180,604 SF of adjacent space
- Excellent window line
10th Floor
| Size | 10,000-45,027 SF |
| Term | Negotiable |
| Rental Rate | $51.50 /SF/YR |
| Space Use | Office |
| Condition | Shell Space |
| Available | Now |
Large upper floor availability in fully renovated Building! Excellent window line with floor to ceiling glass and NO deadwall. Full amenities with fitness center, multiple conferencing, roof top deck, and tenant only lounge. Over 10,000 SF of ground floor retail including Bistro Du Jour which opened in Fall of 2023.
- Lease rate does not include utilities, property expenses or building services
- Open Floor Plan Layout
- Space is in Excellent Condition
- Can be combined with additional space(s) for up to 180,604 SF of adjacent space
- Excellent window line
Property Overview
20 Mass is Capitol Hill's newest mixed-use destination. It is poised to offer experiences that will draw office users, travelers, and patrons alike to the intersection of Mass Avenue and F Street NW. 20 Mass will be transformed through user-centered redevelopment to introduce office space on the upper floors with dramatic views, a 271-key luxury Royal Sonesta Hotel, on-site retail with chef-driven restaurants, and a 14,500-square-foot penthouse amenity lounge. 20 Mass offers a rare top-floor workspace in Capitol Hill with floors seven through ten preleasing. The 183,515-square-foot headquarters opportunity will be well suited for lobbyists, law firms, trade associations, or government affairs entities with initiatives on the Hill. Invigorating its locale with a sustained bustle that transitions from sunup to sundown, the new draw at 20 Mass will energize Capitol Hill's active community. 20 Mass is a proud neighbor to the US Capitol, Georgetown Law, and Union Station's historic hub for transit and shopping. Offering walkable, upscale dining and direct access to world-class attractions and museums from 20 Mass, there is no shortage of things to do and places to go. A prominent anchor in Capitol Hill's distinguished core, 20 Mass is an experiential, urban destination for what's next in DC.
- 24 Hour Access
- Controlled Access
- Concierge
- Conferencing Facility
- Fitness Center
- Restaurant
- Security System
- Energy Performance Rating - A
- Roof Terrace
- Bicycle Storage
- High Ceilings
- Wi-Fi
- Outdoor Seating
- Air Conditioning



