Da Vinci's is among a number of local wedding vendors to have witnessed an increase in business since the District legalized gay marriage, supporting predictions that the law would benefit the region's economy.

"There seems to be some windfall for our small businesses engaged in the event and wedding industry," said Jeffrey D. Richardson, director of the D.C. Mayor's Office of Gay, Lesbian, Bisexual and Transgender Affairs. "There is potential for a real long-term economic impact."

A 2009 study by the nonprofit Williams Institute projected that the Washington region would rack up more than $52.2 million in revenue over three years. None of the jurisdictions in the Washington area, however, is tracking the current business impact.