It is of course best to buy a home insurance policy when you are moving in to a new home, but if you decide to wait it out, you have to make sure you give the policy time to sink in. If hurricane or snow season are approaching, you have to know how long it will take before your policy kicks in to effect, in the event of some kind of damage. Some policies are instant, the minute you pay the first premium, others are going to have a wait period, namely because of the fact that so many will purchase a policy, then cancel after poor conditions, and only purchase again when some kind of threat floats through. Many insurers protect themselves by giving this wait period, so that a policy holder has to stay on some time, and must remain active, in order for a policy to pay out, in the event there is some kind of damage to their home.
If you are getting ready, and want to be fully covered, you should consider buying as early as possible. At least 30 to 60 days with most policies, should be sufficient, and your insurer will pay out. So, if you are worried about hurricane season in August, then you may want to buy ahead in May or June, just to be sure. Although not all insurers require this wait over period, there are certain insurers that do, so you have to ask the questions, you have to get quotes, and you have to do so as early as possible, so you know what you are dealing with, and how to protect your home, especially if you live in a region that is highly affected by weather, and by other adverse conditions.
If you are going to supplement an existing plan, you can do so at any time. It is best to do this a few months before poor weather seasons, and if you do not want to pay the high premium year round, you can remove it after any major threat approaches. But, like with the entire policy, you have to ask questions, and find out what kind of penalties are out there, so you are not paying high fees to cancel, or absurd charges, if you do not want to have extra coverage on the policy and on your home, year round. The only way to know, is to ask when you call in for quotes.
You will find that each insurer is going to have their own rules in relation to home insurance, and to what the policy covers, when it is going to kick in to effect, and what is going to be protected under certain choice policies. You have to know in advance, so even if you are not ready to buy a policy, it is best to get a quote, and to find out what the rules are with an insurer you are considering, so you know you will be covered, when danger does strike.