A driver was badly injured and his three-year-old passenger hurt after his car overturned on a roundabout and hit a house, police said.
The white Ford Focus flipped at the roundabout of Newbiggin Road and North Seaton Road in Ashington, Northumberland, at 8.45pm on Sunday.
It destroyed a garden wall and ended up against a terraced house.
The 30-year-old driver was taken to the James Cook University Hospital in Middlesbrough with serious spinal injuries.
The three-year-old passenger was taken to Northumbria Specialist Emergency Care Hospital in Cramlington with minor injuries, while no-one in the house was hurt.
Northumbria Police said an investigation was under way and appealed for witnesses or anyone with CCTV in the area or dashcam footage.
Anyone with information is asked to contact 101.