Sustainable Design Consulting helps developers, architects and builders create more environmentally-sensitive structures and settings. SDC is a 100% small, woman-owned business, certified by Delaware, Maryland, Virginia, North Carolina, Pennsylvania, and New Jersey, and on the GSA Schedule. Sustainable Design Consulting, LLC (SDC) helps developers, architects and builders create more environmentally sensitive structures and settings. Headquartered in Richmond, Virginia and with an office in Washington, DC, SDC provides expert project-specific and general consulting on planning, site design, water, energy, materials and indoor environmental quality issues for sustainable design and operations. SDC also provides lectures, workshops and training on a wide range of green building topics.