Thieves broke into a garden shed in Bearsden at the weekend and stole more than £2,500 worth of possessions, including mountain bikes.
The robbers struck between Friday, December 16 and Sunday, December 18 at an address at Ravelston Road in the town.
Power tools were also taken.
A police spokesperson said on Monday their enquiries were continuing and appealed for anyone who could help to contact them on 101.
Officers are also warning people to be on extra guard against opportunist thieves, especially in the run-up to Christmas.