Question: what does 90 coinsurance mean in property insurance?
Answer: Coinsurance is usually expressed as a percentage. Most coinsurance clauses require policyholders to insure to 80, 90, or 100% of a property's actual value. For instance, a building valued at $1,000,000 replacement value with a coinsurance clause of 90% must be insured for no less than $900,000.