Detectives believe a man who was found dead on a residential patio on Saturday morning succumbed to injuries he suffered in a fight at a Gold Coast hotel.

Police confirmed three crime scenes had been declared in relation to the investigation - the house where the body was found, as well as a local hotel and park where the fight was thought to have taken place overnight.

The body of the 21-year-old man was found on the patio of a Mudgeeraba house about 10am on Saturday by the occupants of the home.

Investigators cordoned off part of Soma Court and declared the area a crime scene after deciding the man's death was suspicious.

A Queensland Police Service spokesman confirmed about 3pm that detectives had established two further crime scenes at the Wallaby Hotel and adjacent Rotary Park in Mudgeeraba, where they believe the man was drinking on Friday night and later got into a fight.

Investigations were continuing.