So - called «
guaranteed replacement cost» policies cover the
cost of rebuilding your home when it
gets damaged, no matter what the amount — even if the insurance company underestimated how expensive it would be.
If you feel your home insurance dwelling evaluation is too high, and you don't think you need
guaranteed replacement cost, and you're convinced a lesser amount than your evaluated dwelling value will cover you sufficiently in a claim, then you can take your chances and ask your insurance company if there is a possibility to lower your insurance
cost by
getting replacement cost, versus
guaranteed replacement cost.