Weather cleared up for the nine to fix ropes to the top of the 8,849-metre (29,032-foot) mountain, which will be used by Everest hopefuls.
Every year, the first summit of Everest is by a team from one of Nepal's expedition organising companies, who prepare the way for hundreds of paying customers to follow.
"The team safely reached the summit of Everest today," coordinator Mingma Gyalje Sherpa of Imagine Nepal Trek and Expeditions told AFP.
The team was led by mountain guide Dawa Gyalje Sherpa, who already had 12 Everest summits to his name.