What is 'RCE software' and why would an insurer's replacement cost estimate come in much lower than the loan amount?

RCE is your insurer's replacement cost estimate, the price of rebuilding the house from scratch, and that number has no connection to your loan amount. Replacement cost covers materials and labor to rebuild the structure if it were destroyed. Market value includes the land, the location, and buyer demand, and none of those burn down. So the rebuild estimate often sits well below both the market value and your loan balance. That gap is normal, even though it surprises people who expect coverage to track what they paid or what they owe. The part that deserves your attention: insurer rebuild estimates frequently run low. If construction costs after a loss come in above the estimate, a bare policy leaves you underinsured. Ask your agent about guaranteed (or extended) replacement cost coverage, which commits the insurer to rebuild even when the actual bill tops their original estimate. If your situation is more complicated, say a state FAIR Plan paired with a separate wrap or difference-in-conditions policy, sit down with a knowledgeable insurance agent (or ask us to point you to one). The details get technical fast, and a rule of thumb will not protect you there.