Stephanie Banks has seized her window of opportunity and opened her door to home ownership.Banks was on hand with a hammer and nails as work began Saturday on the 29th Habibtat for Humanity home in Warren County. She and her two boys, ages 11 and 9, will live in the home upon completion in about three months.“I never thought I’d own my own home,” said Banks, “and I for sure never thought I would be building my own home. I’ve nailed some nails and I helped lift a wall.”By the end of the day Saturday, all four walls of Banks’ home were in place.