David Tate found one snake in his bedroom and another in the living room on Monday. They weighed 22kg (3.4 stone) between them.
Snake catcher Steven Brown said they were of "exceptional size".
It's thought the two male snakes could have been fighting over a female snake which has not yet been located.
The carpet pythons measured 2.8m (9.1 feet) and 2.5m long.
Mr Tate said he had previously seen snakes basking in the sun on his roof.
"When I came back...there was a large slab [of ceiling] on the kitchen table," he told The Courier-Mail.