In the first incident, local police saw two boys running down a street in the vicinity of a shed fire as they were heading to the Lilac Avenue scene just before midnight.
The shed and a car were destroyed by fire and the adjoining property found to be burgled.
Emergency services were then called to Wellington Street following reports two terrace houses appeared to be alight about 4am.
Swan Hill police patrolling the area at the time came across the two boys in a nearby street who ran off but were arrested after police pursued on foot.
An 18-year-old Kerang man has been charged with three counts of arson, five counts of burglary and one count of theft. He has been bailed to appear at the Kerang Magistrates’ Court on 19 November.
A 15-year-old Kerang boy was also interviewed over the same offences and released pending further enquiries.
No one was injured and each of the three fire-damaged properties were unoccupied.