He was born June 19, 1952, in Colony, the son of Calvin Curtis and LaVaughn Williams Kastl.
He graduated from Ruskin High School in 1970 and shortly thereafter served in the National Guard. He earned a pilot's license and was a master plumber and contractor.
He built homes, hotels and apartment complexes across the country. He was co-owner of Mid Plains Construction, Kastl Plumbing and other business ventures.
He was a longtime member of the Alvamar Country Club and served two terms as president on the executive board. In addition to being an avid golfer, his other passions were tending to his horses and traveling on cruises with his family.
Mr. Kastl is survived by Janet, his wife of 38 years; two sons, Curtis Alan II, Lawrence, and Caleb and wife Natasha, Berryton; his parents, LaVaughn Kastl Peak and William Peak, Lawrence; one brother, Howard and wife Kim, Lawrence; three sisters, Peggy Lasher and husband Mike, Cispus Valley, Wash., Beverly Gossage and husband Robert, Eudora, and Marilyn Pearse, Baldwin City; 13 nieces and nephews; and a large extended family.
He was preceded in death by his father and a brother-in-law, Charlie Pearse.
The family will receive friends from 5 p.m. to 7:30 p.m. Wednesday at Warren-McElwain Mortuary in Lawrence. Funeral services for Curtis will be at 10 a.m. Thursday at the Mustard Seed Church in Lawrence. Burial will follow at Oak Hill Cemetery.
The family suggests memorials to the Salvation Army, sent in care of the mortuary, 120 W. 13th St., Lawrence, KS 66044.
Online condolences may be sent at warrenmcelwain.com.