Several vehicles and two buildings in a residential street south of Wollongong have been damaged by a man who was attempting to park his four-wheel drive.

Emergency crews rushed to Robyn Road at Albion Park Rail about 8:00pm on Friday following reports of a car crash.

Police said a 78-year-old man was attempting to move his four-wheel drive into his garage when he accelerated, crashing through the brick wall of the garage and into a boat on a trailer.

The driver then reversed and hit a vehicle and another boat on a trailer across the road, which caused another garage to collapse.

The man then accelerated forward again, hitting two sedans.

Police said the driver may have suffered a medical episode.

"It was lucky in the end that no one was actually hurt to any serious degree," Acting Inspector Matthew Glasgow said.

The man was taken to hospital for mandatory blood and urine testing.