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Proposed Tysons East development would replace standalone houses with townhomes and parks

An illustration of the Toll Brothers’ proposed townhome development on Seneca Avenue in Tysons (via Fairfax County)

The luxury housing developer Toll Brothers is looking to demolish 12 single-family houses in order to build 52 townhomes with two public parks in Tysons East.

The publicly traded Fortune 500 company is looking to create a townhome development that it has dubbed Seneca Assemblage between Seneca and La Salle avenues by the Dulles Toll Road, alongside the existing McLean Ridge and The Westerlies neighborhoods.

A conceptual design submitted to the Fairfax County Department of Planning and Development in September as part of a rezoning application shows four-story homes in a building of five units with a brick front or facade.

The county would have to rezone 20 parcels from residential to planned development housing for the project to proceed. Toll Brothers’ submitted development plan shows six seven-unit buildings, a four-unit building, and two three-unit buildings, with garages in the back of units.

Seven residences would be affordable units and one would be considered a workforce unit, priced at reduced rates for people who are under certain incomes.

A road would also be created to connect Seneca and La Salle near the middle of the development.

The Fairfax County Board of Supervisors already agreed on June 22 to allow one piece of the project, giving the developer right-of-way for a new, private street called Buena Vista Road that will be incorporated into a park developed by the company.

“A new publicly accessible park, Buena Vista Park, is proposed on the to-be-vacated Buena Vista right-of-way in the northern portion of the Subject Property,” Walsh Colucci senior land use planner Elizabeth Baker said in an Aug. 25 statement on the developer’s behalf.

One of three planned parks collectively totaling 0.68 acres, about half the size of a football field, Buena Vista Park will occupy approximately 0.31 acres and feature turf, trees for shade, and outdoor seating.

“The existing trail will remain in the center of the park space,” Baker wrote. “This park will provide pedestrian connectivity between Seneca and La Salle Avenues, offer a passive recreation open space, and create a buffer between the proposed development and the McLean Ridge townhome community to the north.”

The southern end of the development would have a publicly accessible 0.25-acre green space called Point Park with a recreational area for toddlers as well as an open lawn, sidewalks, and paths.

The application also calls for a 0.12-acre, private outdoor space next to The Westerlies residential community with walking paths, an open lawn area, landscaping, and outdoor seating.

According to the statement of justification, Buena Vista Road will have a 6 to 8-foot-wide landscape amenity panel and a 6-foot-wide sidewalk. Toll Brothers says it will provide 119 parking spaces for the development, along with 29 on-street spaces on Seneca and La Salle.

The developer’s planned proffers include a public schools contribution and a commitment to reducing vehicle trips in the area for residential uses by 25%.

Designs suggest two homes would remain: a two-story home at 1642 La Salle Avenue as well as a three-story home at 1652 La Salle Avenue. The latter will be considered Unit 53 in Seneca Assemblage, while the former property could be integrated later, the application says.

According to the application, Toll Brothers believes its proposal will support the county’s vision for Tysons by redeveloping single-family, detached dwellings with a townhome community that includes affordable and workforce housing.

“A connected street grid and improved pedestrian circulation will promote connectivity,” Baker wrote. “Improved streetscapes will invite pedestrians to explore this new community and the new public parks will enhance the recreational opportunities and natural beauty of the neighborhood.”

A Fairfax County Planning Commission public hearing is currently slated for Sept. 14, 2022.

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