Haven Build Share: Single Family - Custom Haven Build Visit Website 727 N. Mangum Street, Suite 201 Durham, NC 27701 (984) 999-0494 About Map About Haven Developers is an affordable housing development company with in-house Design|Build capabilities. Our projects range from single-family infill to medium scale mixed-use and multi-family projects. What's Nearby? Distance: 5 10 15 20 25 50 mi.