If you are banking on your homeowner's policy you should check the small print. Many (most?) have a relatively low cap (say, $1500) with a deductible of $500+ you don't have much coverage. My insurer requires a specific extended policy that at $3 per 100 makes it very expensive for higher-end bikes.
Pay attention to this if you have really nice bike(s),. They aren't going to be covered under your homeowners in the U.S.. Just like jewelry, expensive camera equipment, etc, you'll have to get a specific insurance rider to establish value, etc. and they'll charge you a nice premium for this.
