Officers are appealing for witnesses after a new-build construction site in Stephenson way, Corby was broken into between Friday and Monday, July 10 and 13.
The offender/s removed a pvc door, probably looking for copper piping and boilers, causing extensive damage in the process.
Police believe they may have been using a van.
Witnesses, or anyone with information, are asked to call Northamptonshire Police on 101. Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111 or use the anonymous online form at www.crimestoppers-uk.org.