Yes, two huge Onelife Fitness projects are coming to Fairfax County. A 110,000 square foot flagship fitness and wellness destination is planned for Tysons Galleria, while a 53,000 square foot club is coming to Mosaic District in Merrifield. The Mosaic location is currently expected to open in early 2027, while the new Tysons Galleria location is targeting late 2027. For residents and future homebuyers, the projects add even more fitness, wellness, shopping, and lifestyle options to two of Northern Virginia's most established mixed use destinations. Explore Northern Virginia homes for sale or browse Team DDA's Northern Virginia area guides to learn more about living near Tysons, Merrifield, Fairfax, Falls Church, and surrounding communities.
A Massive 110,000 Square Foot Onelife Fitness Is Coming to Tysons Galleria
The larger of the two projects will completely transform the former Saks Fifth Avenue space at Tysons Galleria.
Onelife Fitness plans to create a 110,000 square foot flagship location across two floors at 2201 International Drive. The company describes it as one of its largest fitness and wellness destinations in the Washington region.
The planned amenities include:
A 14,000 square foot strength training area
Indoor pickleball courts
A six lane indoor saltwater pool
Hot tub
Cold plunge
Sauna
HYROX training
Strike Boxing
Reformer Pilates
Group fitness studios
Kids club
Red light therapy
HydroMassage
Dedicated recovery and wellness areas
One entire level is expected to focus heavily on recovery and restoration amenities rather than traditional gym equipment. The location is currently expected to open in late 2027.
That is a major change for Tysons Galleria. Instead of replacing a traditional department store with another large retailer, the property is turning a former shopping anchor into a fitness, recreation, and wellness destination.
The Existing Tysons Onelife Will Relocate
The new location is not simply another Tysons gym.
Onelife plans to relocate its existing Tysons club at 8250 Greensboro Drive to Tysons Galleria. The current facility is roughly 85,300 square feet, meaning the Galleria project represents a significant expansion.
There is also an interesting real estate connection.
The current Greensboro Drive property is being considered for redevelopment into multifamily housing. A proposal under Fairfax County review would replace the existing fitness center with two residential towers. As of early October, that proposal had not received final approval.
That means one fitness relocation could potentially contribute to two major changes in Tysons: a massive new wellness anchor at the Galleria and additional housing on the existing gym site.
It fits into Fairfax County's broader vision for Tysons as a mixed use urban center with housing, offices, retail, entertainment, and services concentrated near Metro stations. Fairfax County's plan calls for much of future development to occur within walking distance of transit.
Onelife Fitness Is Also Coming to Mosaic District
Tysons is not the only major Fairfax County expansion.
A new Onelife Fitness Mosaic District club is under development in Merrifield.
The approximately 53,000 square foot fitness center is taking over former Custom Ink office space at 2910 District Avenue. The current plan includes strength training, cardio equipment, athletic turf areas, outdoor training space, group fitness studios, Strike Boxing, a cold plunge, sauna, HydroMassage, and dedicated recovery areas.
Unlike the future Tysons location, the Mosaic club is not planned to include a swimming pool.
Onelife's official website currently lists the club as coming soon, with a preview center already open for prospective members. The latest local reporting places the main club's anticipated opening in early 2027.
Why Mosaic District Makes Sense for a Large Fitness Center
The location is especially interesting because Mosaic District was designed around the idea of combining residential living with shopping, restaurants, entertainment, services, and public gathering spaces.
The district already contains apartments and townhomes, restaurants, retailers, a movie theater, community events, fitness studios, and outdoor spaces. The official Mosaic directory now lists Onelife among its service businesses.
Mosaic also provides a weekday shuttle connection to the Dunn Loring Merrifield Metro station and has Capital Bikeshare access.
Adding a full service 53,000 square foot gym expands the number of activities residents can access without necessarily leaving the neighborhood for every errand or workout.
What Do These New Gyms Mean for Fairfax County Real Estate?
A new gym does not automatically increase nearby home values, and buyers should be cautious about making that assumption.
What these projects do demonstrate is continued investment in places that are already becoming more focused on mixed use living.
Today's homebuyers are often evaluating more than the house itself.
They may also ask:
Where can I work out?
Can I walk to restaurants?
Is shopping nearby?
How far is Metro?
Are there parks and gathering spaces?
Can I complete daily errands without driving across the county?
Are new businesses continuing to invest in the area?
Those questions can influence how buyers compare otherwise similar properties.
Tysons and Mosaic are both good examples.
Tysons Continues Moving Beyond the Office Park Model
Tysons has historically been associated with offices, highways, and shopping centers.
Fairfax County's long term plan is much broader.
The county envisions a more urban Tysons with additional housing, public spaces, transportation connections, retail, hotels, entertainment, and community services. About three quarters of future Tysons development is planned within a ten minute walk of a Metro station.
A massive wellness destination inside Tysons Galleria fits that transition.
It gives people another reason to visit the area beyond shopping or work and adds an amenity that nearby residents could potentially incorporate into everyday routines.
The possibility of replacing Onelife's current Greensboro Drive facility with housing also illustrates how Tysons land uses continue to evolve.
For homebuyers comparing McLean, Tysons, Vienna, Falls Church, and surrounding Fairfax County communities, these changes are worth watching.
Mosaic Shows the Appeal of Live, Shop, Dine, and Exercise in One Place
Mosaic offers a smaller scale version of the same concept.
The district's official residential offerings include apartments at Avalon Mosaic and Modera Mosaic along with 137 contemporary townhomes originally developed by EYA. Residents are positioned within walking distance of restaurants, shops, entertainment, and community spaces.
Onelife adds a large wellness component to that mix.
That can matter to buyers who prioritize convenience and want daily activities close to home.
It can also benefit nearby neighborhoods throughout Merrifield, Falls Church, Fairfax, Annandale, and Dunn Loring where residents can reach Mosaic quickly without living directly inside the development.
The Two Projects at a Glance
Onelife Fitness Tysons Galleria
Size: Approximately 110,000 square feet
Location: Former Saks Fifth Avenue at Tysons Galleria
Target opening: Late 2027
Highlights: Saltwater pool, pickleball, strength training, HYROX, Pilates, boxing, sauna, cold plunge, recovery services, kids club, and multiple boutique studios.
Onelife Fitness Mosaic District
Size: Approximately 53,000 square feet
Location: Former Custom Ink office space at Mosaic District
Target opening: Early 2027 based on the latest local reporting
Highlights: Strength and cardio areas, athletic turf, outdoor training, group fitness, boxing, sauna, cold plunge, HydroMassage, and recovery amenities.
Frequently Asked Questions
When is Onelife Fitness Mosaic District opening?
The official Onelife page currently lists Mosaic District as coming soon and says its preview center is open. The latest local reporting indicates the full club is expected to open in early 2027.
When is the new Onelife Fitness at Tysons Galleria opening?
The new flagship Tysons Galleria location is currently targeted for late 2027.
How big will the new Tysons Onelife Fitness be?
Approximately 110,000 square feet across two levels, making it one of the largest fitness and wellness destinations in the Washington region.
Where will the Tysons Onelife Fitness be located?
It will occupy the former Saks Fifth Avenue space at Tysons Galleria.
How big is the Mosaic District Onelife?
The planned Mosaic District club is approximately 53,000 square feet.
Will the Mosaic District Onelife have a pool?
Current plans do not include a swimming pool at Mosaic. The Tysons Galleria location is planned to include a six lane indoor saltwater pool.
Will the current Tysons Onelife close?
The company plans to relocate the existing club on Greensboro Drive to the new Tysons Galleria facility.
The Bottom Line
Onelife Fitness is making a major investment in Fairfax County with two very different projects.
Mosaic District is getting a 53,000 square foot fitness and recovery destination expected in early 2027.
Tysons Galleria is getting an enormous 110,000 square foot flagship targeted for late 2027.
Together, the projects reflect a broader change happening across Northern Virginia. Shopping centers and mixed use communities are becoming places where people can live, eat, shop, exercise, relax, and spend more of their daily lives.
For real estate buyers, that does not mean a nearby gym guarantees appreciation. It does mean neighborhood amenities and convenience should be part of the conversation when comparing homes.
If you are interested in living near Tysons, Merrifield, or other growing Fairfax County communities, browse Northern Virginia homes for sale or explore Team DDA's area guides.
Debbie Dogrul Associates, known as Team DDA, is one of Northern Virginia's leading real estate teams, serving buyers and sellers throughout Fairfax County, Arlington, Alexandria, Loudoun County, Prince William County, and communities including Fairfax, Burke, Vienna, Reston, McLean, Tysons, Springfield, Centreville, Herndon, and Clifton.
Ready to explore more of Northern Virginia? Connect with Team DDA when your next weekend outing starts turning into thoughts about your next move.
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