'Indirect' protection maybe, but possibly still important:
Tell the insurer that the property is empty. (Most home insurance policies cease to be valid if the property is left unoccupied for more than a few weeks. You might need to pay an additional premium to keep the policy valid).
Also consider protection against intruders (who might, for example, try to strip out all of the metal pipework, etc). Extra locks and bolts might be needed. You need to consider whether it's best to leave the electricity turned on (so that you can have automated devices operating to simulate occupation) or off (to reduce any risks of electrical faults occurring).