Firefighters were called to a property on London Road this morning where a fire broke out in the roof space and spread to a first-floor flat.
Fire engines from Basingstoke, Andover, Overton and Eastleigh were in attendance, along with support vehicles including the aerial ladder platform.
The crews were first called at 7:29 when the incident was reported to the HIWFRS Control Room and it was unknown at the time if there were people inside.
Upon arrival crews quickly ascertained that all persons were out of the two-storey building.
The stop message came in at 10:45 with the fire now extinguished.
The property has suffered significant damage from the fire, smoke and water.
Eight sets of breathing apparatus were worn and three jets and two hose reels used to stop the blaze.
Before leaving the scene crews distributed fire safety leaflets to neighbouring properties.
HIWFRS will return later this afternoon to conduct a reinspection of the scene, checking for any further hotspots.
Incident commander Ewen Ross said :
“Initially when we arrived at the scene, we were confronted with a fully developed fire in the roof space of the building.
“Our first concern was the safety of the occupants and luckily everyone had already been evacuated from the building before we arrived.
“We quickly got to work to tackle the fire in the roof space and brought the fire under control.
“I would like to say thank you to our colleagues in the police and the ambulance service who we have been working very closely with and to the residents of Overton who have also been a great help.”