Located in Albemarle County, Virginia, M3, Inc. is a general contractor providing commercial and residential construction services for Charlottesville, Albemarle and Central Virginia Region. M3 specializes in residential home renovations, additions and remodeling as well as brick, block and stone craftsmanship.

The company was formed as a partnership in 1998 and became incorporated in 1999. In 2006, M3, Inc. received its SWaM certification as a woman-owned business. Co-Founder, Shane Marshall comes from a lineage of outstanding masons. As a third generation mason, he has established a reputation for providing only the highest quality workmanship. This, coupled with his wife and co-founder, Stefanie Marshall's innovative thinking, has accounted for the success of M3, over the years.

In 2005, M3, Inc. received the honor of second place in the prestigious International Excellence in Masonry competition, held in Chicago, Illinois for the masonry work performed on the Terry House Dormitory at Woodberry Forest School, in Orange, Virginia.

M3, Inc. strongly believes in being a good civic partner with the community. The company has sponsored events with the Fraternal Order of Police, Charlottesville Live Arts Center, The Paramount Theater, Albemarle Charlottesville Historical Society and various local charitable organizations.

M3, Inc. is a member of the Associated General Contractors of Central Virginia, The Masonry Contractors Association of America, National Association for Women in Construction, U.S. Green Building Council, and the Charlottesville Area Association of Realtors.