A man has been rushed to hospital in critical condition after he was pulled from under a house in Brisbane's south.

Multiple fire crews worked to stabilise a Tarragindi home after a man, believed to be in his 20s, became trapped underneath it about 1.30pm.

The home was being relocated from the Marchant Street address when the incident occurred, according to a Queensland Fire and Emergency Services spokeswoman.

Emergency crews managed to free the man just before 2.30pm.

The man was rushed to Princess Alexandra hospital in a critical condition with "traumatic injuries", according to a Queensland Ambulance spokeswoman.

The company that was moving the house, Mackay and Sons House Removals, declined to comment.