North Wales Police said the van was not damaged during the incident, and urged tradespeople to take extra steps to keep their property secure.
VAN owners have been warned to secure their property following a theft in Penrhyn Bay.
North Wales Police said the incident was reported in Penrhyn Beach West on Tuesday morning.
The van had not been damaged during the break-in. Police urged tradespeople to ensure their property is kept safe from thieves.
A tweet on the Community Safety Central page said: "A tradesman from Penryn Beach West in Penrhyn Bay has gone to a job this morning. Upon opening the van he has found that his tools have been stolen.
"There are no physical signs that the van has been tampered with.
"What extra measures have you taken to keep your tools safe?"
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