David graduated from the University of Manitoba with a Bachelor of Arts in 1972 and a Master of Landscape Architecture in 1980. He became a member of MALA and the CSLA in 1982. He added a class "A" membership in the Golf Course Superintendents Association of America in 1988. David served as President of MALA from 1988 - 90 and represented MALA on the CSLA Board of Governors for four years. Additionally, he served as CSLA President-Elect and President from 1995-98.
David founded David Wagner Associates Inc. in Winnipeg. His family-based practice excels in the design and timely construction delivery of a diverse landscape project catalogue. David was the principal author of the Clear Lake Golf Course Tender, a CSLA National Merit project. David developed an ecologically advanced spring runoff capture and summer water re-cycling design for the Winkler Golf Course. His forethought in designing the championship Bridges Golf Course in Starbuck took the Manitoba flood of the century into account. His urban design projects include memorials at Valour Road, Arden Seven and Vimy Ridge Memorial Park in Winnipeg, showcasing traditional landscape architecture and a deep respect for history, humanity and public art.
David's contributions to the CSLA included substantive policy in the area of fiscal responsibility. His efforts towards raising the awareness of the profession with the general public were highlighted by his spearheading of the development and registration of WWW.CSLA.CA in 1998. David made electronic communication for the Society a reality. David was instrumental in making the CSLA Awards Program an annual event with its home base in Winnipeg.