Your dwelling coverage should reflect what it would cost to rebuild your home, not its market value. Market value includes the land, which does not burn down or blow away. If your coverage was set using a sale price or a market estimate, you may be paying to insure something that does not need insuring.

Ask your insurer to walk you through how your rebuilding cost estimate was calculated. Check the details it relies on, including square footage, number of bathrooms, roof type, construction materials and special features. Errors in either direction are common, and fixing them gives you a coverage amount that actually fits your house.

This is not about trimming protection. If the estimate shows you are overinsured, adjusting it can lower your premium while keeping full coverage for a rebuild. If it shows you are underinsured, raising it protects you from a painful shortfall after a disaster. Some policies also offer extended replacement cost, which adds a cushion if building costs jump after a widespread event, so ask about it too.