I don't know what part of the country you are in, but I find it amazing that your landlord owns an office block, but does not have Insurance. In fact if he is mortgaged to a Bank, they would insist on Insurance been applied. The normal thing for Insurance, is that landlords effect the Insurance and then Invoice the tenants to have same reclaimed. This Insurance normally covers the extent of the premises but not your stock, papers, and any loss you might have.In fact it's not up to you to effect Insurance on the property as you do not own it. It's a landlord problem. As a matter of interest, let me know how you get on.