Tools were stolen from a van in Nevis Grove, Bletchley, in the early hours of Monday morning.
It is believed the offender forced a rear door to gain entry to the van at around 12.05am. Although the alarm was activated the tools were taken.
Anyone with information is asked to call Thames Valley Police on 101.
Anyone interested in setting up a Neighbourhood Watch scheme, or who would like to renew an existing scheme, can contact Helen Sharratt on 01908 324626 or email her on firstname.lastname@example.org