The Arlington County Board, in an unanimous vote, on Saturday passed an affordable housing plan that will add about 15,800 apartments affordable to low to moderate income households by 2040.

Three hours of personal and heartfelt testimony from those who said they have benefitted from Arlington’s existing housing supports swayed the lawmakers who said they couldn’t recall more affecting testimonials in their tenures.

Carolina Perez described the impact of having a safe and stable apartment on her family, showing the board her daughter’s A-plus on a math assignment. “It really hurts us when people say low-income (families) are bringing down Arlington,” she said. “You are not wasting your money. You are investing in your future.”