The sinkhole insurance cost is the price of an endorsement, because in Florida the standard homeowners policy already includes catastrophic ground cover collapse, the narrow case where the ground opens and the house is condemned. The sinkhole loss endorsement covers the far more common case, settlement and cracking from sinkhole activity that damages the house without destroying it, and carriers price it on the county, the soil and often an inspection. The Insurance Information Institute's NAIC-based figure puts the average US homeowners premium at $1,411 for 2021, and the average renters premium at $170; both are national averages that no single household pays, and the rate pages on this site show what carriers actually file where you live.
What the base policy already covers
Florida law requires homeowners policies to cover catastrophic ground cover collapse: an abrupt collapse, a visible depression, structural damage and the house condemned. That is a rare event, and most sinkhole damage does not meet the definition. Outside Florida, sinkhole coverage is generally an endorsement or excluded altogether.
What the endorsement adds
Sinkhole loss coverage pays for structural damage caused by sinkhole activity that does not reach the catastrophic definition: the settling, cracking and foundation movement that a geologist attributes to subsurface limestone dissolving. It usually carries its own deductible, stated as a percentage of the dwelling limit, and requires testing to confirm the cause.
How carriers price it
By county and soil, on the carrier's own claims experience, and sometimes only after an inspection of the property. Some carriers do not offer it in the highest-risk counties, and the price varies more between carriers than most coverages do. The III reports that 5.5 percent of insured homes had a claim in 2022, so most policy years end with nothing paid out and the price is paid for the year something is.
Whether to buy it
Check the county's sinkhole history, the age and foundation of the house, and the deductible on the endorsement. The rate pages on this site show how carriers file the coverage in Florida. The filed rates on this site show how carriers price this where you live, and quotes taken on the same limits and deductible are the only fair comparison.
Questions people ask about sinkhole insurance cost
Is sinkhole insurance included in Florida homeowners insurance?
Catastrophic ground cover collapse is; the broader sinkhole loss coverage is an optional endorsement with its own price and deductible.
What does the sinkhole insurance cost depend on?
County and soil, the carrier's experience, the deductible and often an inspection.
Do I need it outside Florida?
Sinkhole exposure exists in several states with limestone geology; coverage is usually an endorsement and worth asking about where the county has a history.