Four fire engines tackled a blaze at a farm in Treeton.
Crews from Rotherham, Maltby, Aston Park and Birley Moor fire stations attended the blaze on Long Lane at around 12.40pm on Tuesday.
A boat, trailer and motor home were all involved in the fire and a man in his 70s was treated by paramedics after suffering slight burns to his hand.
The fire took several hours to bring under control and an investigation into the cause is underway.