SCOTT KEELER | TimesHabitat for Humanity of Pinellas volunteer Xiomara Valdes, 34, helps fellow volunteers lift roof trusses on Friday at 4526 19th St. N in St. Petersburg. Valdes, a mother of two who was homeless 2 1/2 years ago, will accept the keys to the home on Feb. 14 during a dedication ceremony. "It's a dream come true for us," said Valdes. Volunteers are building two homes side by side, this one and one at 4520, as part of the "Strength in Service" campaign. Habitat is hosting five volunteer "blitz" weekends to build the homes.