Dectectives hope contractors can shed light on the alleged murder of Sunshine Coast man George Gerbic, whose charred torso was found last year.

Queensland police hope a tradesperson or cleaner can shed light on the case of a man allegedly murdered and decapitated by his partner.

The charred torso of Sunshine Coast man George Gerbic, 66, was found by the side of a road at Cedar Pocket near Gympie in southeast Queensland last September.

His 56-year-old partner Lindy Yvonne Williams appeared in court on Friday charged with his murder.

Ms Williams has also been charged with misconduct with a corpse.

Detectives on Monday appealed to anyone who might have gone to the house the couple shared at Man Creek Road, Tanawha in the last 18 months to come forward.

“Investigators are appealing for anyone such as tradespeople, handy men, home cleaning agencies, earthmovers or pest services who may have attended the address in the last 18 months to contact police,” they said in a statement on Monday.

The discovery of the headless remains, with arms severed at the elbows and nothing left below the rib cage, had police baffled for 10 months.

However, detectives were led to Mr Gerbic’s house after investigating a trace of blood pressure medication found in his system.

Pharmacy records led officers to doorknock a number of houses in the area, including the retired real estate agent’s home.