We looked at this a couple of years ago. Insurers took differing views depending on whether you were insuring just the building or building and contents. Many are reasonably relaxed if just the building eg a weekly check from another local etc. However, if you want contents cover then they are much stricter. The best we found was a requirement for a recorded overnight stay by a friend/relative during the 45 or 60 day period that the policy specified. They did not seem to mind who it was. However, there is also the question of would you want to leave you house and contents unsupervised for very long periods? Personally I would not.