Seminole County, HFH in 1548 Seminola Blvd Unit 141 Casselberry, FL 32707-3648 Phone: (407) 696-5855 Web site | Email Building Partners: M/ Homes Colonial Construction Services, LLC Our blitz: Habitat for Humanity in Seminole County is very proud to recognize M/I Homes and Colonial Construction Services for their commitment to building two (2) homes in Altamonte Springs, Florida. Their commitment to this year's Builder's Blitz will ensure that the mission of Habitat for Humanity will continue by providing safe, decent, affordable housing for those in need. These two homes will add to the nearly eighty (80) homes that Habitat for Humanity in Seminole County has built in partnership with the community.