Per the Washington Post:
The D.C. Board of Zoning Adjustment agreed yesterday that a two-story building being constructed by a U.S. Buddhist association on Massachusetts Avenue NW is a place of worship.
A group of residents who live near the Naval Observatory asked the city to appeal a decision this year by the zoning administrator that Soka Gakkai International-USA could build there as a "matter of right." The residents argued that the meetings held by the Buddhists were community meetings, not religious gatherings.
Under District zoning laws, a religious organization can build a place of worship in a residential area without asking for an exemption, which would be needed for a community center. Neighbors had contended that the building would create traffic and noise in the neighborhood several days a week.