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Fuse at Mason Square 3401 Fairfax Dr 1,609 - 98,608 sq ft of 5-Star Space Available in Arlington, VA 22201
HIGHLIGHTS
- Cutting-edge, purpose-built smart technology building centered on innovation, offering flexible lab and office space with customization options.
- Unique features such as a podcast studio and specialized labs, including robotics, VR, simulation, network, data visualization, and secure facilities.
- Access to the region's biggest tech talent pipeline, world-class faculty, specialized labs, equipment, and secure facilities.
- Supports large-scale flexible conference facilities that can accommodate up to 750 people, with direct access to host an additional 1,400 people.
- Additional on-site conveniences include a fitness center, conferencing options, and outdoor amenities.
- Situated in a prominent tech corridor with easy access to Interstate 66, within walking distance of two Metro stations and numerous restaurants.
ALL AVAILABLE SPACES(11)
Display Rent as
- SPACE
- SIZE
- TERM
- RATE
- USE
- CONDITION
- AVAILABLE
- Rate includes utilities, building services and property expenses
- Rate includes utilities, building services and property expenses
- Space is in Excellent Condition
- High-density office layout
Spec Suite delivering 12/2025
- Rate includes utilities, building services and property expenses
- High-density office layout
- Fully Fit-Out as Standard Office
- Space is in Excellent Condition
SCIF Space
- Rate includes utilities, building services and property expenses
- Space is in Excellent Condition
- High-density office layout
- Rate includes utilities, building services and property expenses
- Space is in Excellent Condition
- High-density office layout
- Rate includes utilities, building services and property expenses
- Space is in Excellent Condition
- High-density office layout
Spec suite delivering 12/2025
- 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 10,111 sq ft of adjacent space
Spec Suite delivering 12/1/2025
- Rate includes utilities, building services and property expenses
- Can be combined with additional space(s) for up to 10,111 sq ft of adjacent space
Spec Suite delivering 12/1/25
- Rate includes utilities, building services and property expenses
- Can be combined with additional space(s) for up to 10,111 sq ft of adjacent space
- 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 44,890 sq ft of adjacent space
- 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 44,890 sq ft of adjacent space
| Space | Size | Term | Rate | Space Use | Condition | Available |
| 1st Floor | 1,609 sq ft | Negotiable | Upon Application Upon Application Upon Application Upon Application | Retail | Shell And Core | Now |
| 4th Floor | 3,000-14,213 sq ft | Negotiable | Upon Application Upon Application Upon Application Upon Application | Office | Shell And Core | Now |
| 4th Floor, Ste 450 | 1,790 sq ft | Negotiable | Upon Application Upon Application Upon Application Upon Application | Office | Full Fit-Out | Now |
| 5th Floor | 3,000-12,479 sq ft | Negotiable | Upon Application Upon Application Upon Application Upon Application | Office | Shell And Core | Now |
| 6th Floor | 3,000-10,098 sq ft | Negotiable | Upon Application Upon Application Upon Application Upon Application | Office | Shell And Core | Now |
| 7th Floor, Ste 750 | 3,418 sq ft | Negotiable | Upon Application Upon Application Upon Application Upon Application | Office | Shell And Core | Now |
| 7th Floor, Ste A | 1,861 sq ft | 5-10 Years | Upon Application Upon Application Upon Application Upon Application | Office | Spec Suite | Now |
| 7th Floor, Ste B | 1,976 sq ft | 5-10 Years | Upon Application Upon Application Upon Application Upon Application | Office | Spec Suite | Now |
| 7th Floor, Ste C | 6,274 sq ft | 5-10 Years | Upon Application Upon Application Upon Application Upon Application | Office | Spec Suite | Now |
| 8th Floor | 18,086 sq ft | Negotiable | Upon Application Upon Application Upon Application Upon Application | Office | Shell And Core | Now |
| 9th Floor | 26,804 sq ft | Negotiable | Upon Application Upon Application Upon Application Upon Application | Office | Shell And Core | Now |
1st Floor
| Size |
| 1,609 sq ft |
| Term |
| Negotiable |
| Rate |
| Upon Application Upon Application Upon Application Upon Application |
| Space Use |
| Retail |
| Condition |
| Shell And Core |
| Available |
| Now |
4th Floor
| Size |
| 3,000-14,213 sq ft |
| Term |
| Negotiable |
| Rate |
| Upon Application Upon Application Upon Application Upon Application |
| Space Use |
| Office |
| Condition |
| Shell And Core |
| Available |
| Now |
4th Floor, Ste 450
| Size |
| 1,790 sq ft |
| Term |
| Negotiable |
| Rate |
| Upon Application Upon Application Upon Application Upon Application |
| Space Use |
| Office |
| Condition |
| Full Fit-Out |
| Available |
| Now |
5th Floor
| Size |
| 3,000-12,479 sq ft |
| Term |
| Negotiable |
| Rate |
| Upon Application Upon Application Upon Application Upon Application |
| Space Use |
| Office |
| Condition |
| Shell And Core |
| Available |
| Now |
6th Floor
| Size |
| 3,000-10,098 sq ft |
| Term |
| Negotiable |
| Rate |
| Upon Application Upon Application Upon Application Upon Application |
| Space Use |
| Office |
| Condition |
| Shell And Core |
| Available |
| Now |
7th Floor, Ste 750
| Size |
| 3,418 sq ft |
| Term |
| Negotiable |
| Rate |
| Upon Application Upon Application Upon Application Upon Application |
| Space Use |
| Office |
| Condition |
| Shell And Core |
| Available |
| Now |
7th Floor, Ste A
| Size |
| 1,861 sq ft |
| Term |
| 5-10 Years |
| Rate |
| Upon Application Upon Application Upon Application Upon Application |
| Space Use |
| Office |
| Condition |
| Spec Suite |
| Available |
| Now |
7th Floor, Ste B
| Size |
| 1,976 sq ft |
| Term |
| 5-10 Years |
| Rate |
| Upon Application Upon Application Upon Application Upon Application |
| Space Use |
| Office |
| Condition |
| Spec Suite |
| Available |
| Now |
7th Floor, Ste C
| Size |
| 6,274 sq ft |
| Term |
| 5-10 Years |
| Rate |
| Upon Application Upon Application Upon Application Upon Application |
| Space Use |
| Office |
| Condition |
| Spec Suite |
| Available |
| Now |
8th Floor
| Size |
| 18,086 sq ft |
| Term |
| Negotiable |
| Rate |
| Upon Application Upon Application Upon Application Upon Application |
| Space Use |
| Office |
| Condition |
| Shell And Core |
| Available |
| Now |
9th Floor
| Size |
| 26,804 sq ft |
| Term |
| Negotiable |
| Rate |
| Upon Application Upon Application Upon Application Upon Application |
| Space Use |
| Office |
| Condition |
| Shell And Core |
| Available |
| Now |
1st Floor
| Size | 1,609 sq ft |
| Term | Negotiable |
| Rate | Upon Application |
| Space Use | Retail |
| Condition | Shell And Core |
| Available | Now |
- Rate includes utilities, building services and property expenses
4th Floor
| Size | 3,000-14,213 sq ft |
| Term | Negotiable |
| Rate | Upon Application |
| Space Use | Office |
| Condition | Shell And Core |
| Available | Now |
- Rate includes utilities, building services and property expenses
- High-density office layout
- Space is in Excellent Condition
4th Floor, Ste 450
| Size | 1,790 sq ft |
| Term | Negotiable |
| Rate | Upon Application |
| Space Use | Office |
| Condition | Full Fit-Out |
| Available | Now |
Spec Suite delivering 12/2025
- Rate includes utilities, building services and property expenses
- Fully Fit-Out as Standard Office
- High-density office layout
- Space is in Excellent Condition
5th Floor
| Size | 3,000-12,479 sq ft |
| Term | Negotiable |
| Rate | Upon Application |
| Space Use | Office |
| Condition | Shell And Core |
| Available | Now |
SCIF Space
- Rate includes utilities, building services and property expenses
- High-density office layout
- Space is in Excellent Condition
6th Floor
| Size | 3,000-10,098 sq ft |
| Term | Negotiable |
| Rate | Upon Application |
| Space Use | Office |
| Condition | Shell And Core |
| Available | Now |
- Rate includes utilities, building services and property expenses
- High-density office layout
- Space is in Excellent Condition
7th Floor, Ste 750
| Size | 3,418 sq ft |
| Term | Negotiable |
| Rate | Upon Application |
| Space Use | Office |
| Condition | Shell And Core |
| Available | Now |
- Rate includes utilities, building services and property expenses
- High-density office layout
- Space is in Excellent Condition
7th Floor, Ste A
| Size | 1,861 sq ft |
| Term | 5-10 Years |
| Rate | Upon Application |
| Space Use | Office |
| Condition | Spec Suite |
| Available | Now |
Spec suite delivering 12/2025
- 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 10,111 sq ft of adjacent space
7th Floor, Ste B
| Size | 1,976 sq ft |
| Term | 5-10 Years |
| Rate | Upon Application |
| Space Use | Office |
| Condition | Spec Suite |
| Available | Now |
Spec Suite delivering 12/1/2025
- Rate includes utilities, building services and property expenses
- Can be combined with additional space(s) for up to 10,111 sq ft of adjacent space
7th Floor, Ste C
| Size | 6,274 sq ft |
| Term | 5-10 Years |
| Rate | Upon Application |
| Space Use | Office |
| Condition | Spec Suite |
| Available | Now |
Spec Suite delivering 12/1/25
- Rate includes utilities, building services and property expenses
- Can be combined with additional space(s) for up to 10,111 sq ft of adjacent space
8th Floor
| Size | 18,086 sq ft |
| Term | Negotiable |
| Rate | Upon Application |
| Space Use | Office |
| Condition | Shell And Core |
| Available | Now |
- 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 44,890 sq ft of adjacent space
9th Floor
| Size | 26,804 sq ft |
| Term | Negotiable |
| Rate | Upon Application |
| Space Use | Office |
| Condition | Shell And Core |
| Available | Now |
- 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 44,890 sq ft of adjacent space
PROPERTY OVERVIEW
Fuse at Mason Square is a one-of-a-kind research and technology hub providing an innovation destination with best-in-class amenities in the prominent Rosslyn-Ballston corridor. With purpose-driven research labs and business office space at its core, this 10-story, 345,000-square-foot building boasts a striking centralized ground-floor atrium, expansive lobby, and a spacious green roof accompanied by multiple terraces. Fuse offers an environment to support flexible collaboration directly or indirectly with early-stage, emerging growth, and established technology companies. Various suites and full-floor opportunities are available where academic and industry spaces may be co-located on several building floors and spread around unique collaboration zones to spark innovative and entrepreneurial business opportunities. A retreat for digital innovators, researchers, and entrepreneurs to interact and thrive, Fuse at Mason Square combines customizable, secure facilities with world-class convening spaces and amenities. Tenants will have access to the superior advantages of this all-encompassing advanced technology haven, from bespoke labs and infrastructure to an unmatched location as the area’s largest concentration of research collaboration between public institutions and industry partners. Specialized labs are on-site for robotics, VR, simulation, and security data visualization. Additional trophy-level amenities include an elevated terrace café, a podcast studio/media conference room, a large conference center, a digital fitness studio, and a supportive tech concierge. Ideally located at the center of the Rosslyn-Ballston tech corridor, Fuse is at the epicenter of an emerging innovation district, serving as a beacon for tech talent, new partnerships, new companies, innovation, and inclusive economic development. The community provides easy access to Interstate 66, delivering a seamless connection into DC within minutes. Multiple Metro stops in the neighborhood help make commuting a breeze. Discover the opportunity to co-locate in a new state-of-the-art facility in a unique urban destination for research, learning, and economic development, continuing to grow as a global innovation powerhouse.
- 24 Hour Access
- Atrium
- Banking
- Bus Route
- Controlled Access
- Concierge
- Conferencing Facility
- Local Shop
- Courtyard
- Fitness Centre
- Food Service
- Public Transport
- Restaurant
- Security System
- Signage
- Roof Terrace
- Car Charging Station
- Demised WC facilities
- High Ceilings
- Lift Access
- Natural Light
- Wi-Fi
- Outdoor Seating
- Air Conditioning
- Balcony
PROPERTY FACTS
SUSTAINABILITY
SUSTAINABILITY
LEED Certification Developed by the U.S. Green Building Council (USGBC), the Leadership in Energy and Environmental Design (LEED) is a green building certification program focused on the design, construction, operation, and maintenance of green buildings, homes, and neighbourhoods, which aims to help building owners and operators be environmentally responsible and use resources efficiently. LEED certification is a globally recognized symbol of sustainability achievement and leadership. To achieve LEED certification, a project earns points by adhering to prerequisites and credits that address carbon, energy, water, waste, transportation, materials, health and indoor environmental quality. Projects go through a verification and review process and are awarded points that correspond to a level of LEED certification: Platinum (80+ points) Gold (60-79 points) Silver (50-59 points) Certified (40-49 points)
MARKETING BROCHURE
LETTING TEAM
LETTING TEAM
Andy Klaff, Executive Managing Director
Prior to joining Newmark, Klaff was an Executive Vice President and Director of Colliers International’s Northern Virginia brokerage operations.
Steve Hoffeditz, Executive Managing Director
Mr. Hoffeditz focuses on assisting his clients to execute the optimal real estate structure for their assets by developing forward-looking strategies that minimize risk, retain flexibility and ultimately drive value. Mr. Hoffeditz works alongside his clients to acutely understand their goals and deliver results that surpass their expectations.
Prior to joining Newmark, Mr. Hoffeditz enjoyed a successful tenure as a senior vice president at CBRE, where he was responsible for leasing in the Washington, DC, metropolitan area and Northern Virginia.
Debbie Cross, Associate
ABOUT THE OWNER
OTHER PROPERTIES IN THE GEORGE MASON UNIV, COSTELLO COLLEGE OF BUSINESS PORTFOLIO
ABOUT THE ARCHITECT
OTHER PROPERTIES IN THE OTJ ARCHITECTS PORTFOLIO
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Fuse at Mason Square | 3401 Fairfax Dr
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