Police are warning Buxton residents to be on the look out for people posing as tradespeople.
Hume Police District officers have received reports of people wearing high-visible work shirts, but have no tools or trade vehicles.
The people are looking for unattended homes to allegedly commit a theft.
Police have been notified of suspicious activity in the Buxton, Hill Top and Colo Vale areas.
If you see anything suspicious, call Crime Stoppers NSW on 1800 333 000.