Sometime overnight on Tuesday 26 July a container was broken into and a large number of hand-held tools, including chainsaws, were taken.
Council officers are currently assessing the cost of the burglary but it is expected to run into four figures. Police have been informed.
Councillor Barbara Brownridge, Cabinet Member for Neighbourhoods and Co-operatives, said: "This was a very professional job and must have taken some time as the thieves had to cut through the lock on the container to get in.
The broken container lock. Image: Supplied
"The stolen items are insured but that is not the point. Thefts such as this mean we cannot carry out scheduled work and the premiums we pay will no doubt go up next year - added costs we can all do without.
"The items have been treated with Smart Water and we'd urge anyone with information - or if you are offered a chainsaw on the cheap - to get in touch with us or the police."