Police Scotland are investigating the incident at Woodlea Court which happened between Monday and Wednesday whilst the occupiers were away.
Constable Nicola Brunton at Lockerbie said: “We are are asking anyone in the Beattock area to give us a call on 101 if they can assist us with this investigation.
“We want to hear from anyone who may have seen or heard anything in the Beattock area over this period.
“In particular at around 9 pm on Monday evening.
“We again remind the public that Police Scotland is only too happy to receive calls from the public about suspicious or even unusual activity in the community at the time it is happening.
“We will gladly attend and check things out and if all in order then no harm done.”