Welliver Construction Co. founded by Wilmot H. Welliver.
Contracted for first non-residential project – a new schoolhouse built in Lowman, New York.
Welliver moves to Elmira, New York – the Queen City of the Southern Tier.
Wilmot’s son, William, marks the second generation of leadership.
William’s son, Arthur, adds the third generation of leadership.
William’s younger son, Richard, joins the firm.
Welliver responds to major flooding in Elmira, New York and helps to rebuild the community.
Scott Welliver becomes the fourth generation to join the company.
Welliver acquires McGuire & Bennett Inc. of Ithaca, New York.
The organization incorporates as Welliver McGuire Inc.
Welliver McGuire Inc. celebrates 100th anniversary of delivering construction services.
Welliver renovates and relocates to its current corporate headquarters in Montour Falls, New York.
Scott’s children, Anne and Steve, now make up the company’s fifth generation and lead alongside their father and fellow co-owners Stephen Campbell and JD Young.
Welliver celebrates 120th anniversary.