My understanding (I may be wrong), your standard homeowners insurance has a clause and coverage for catastrophic ground collapse, which comes into play if your house is condemned. It does not cover sinkholes that do not cause the house to be condemned. This is covered by a supplemental policy , aka sinkhole coverage. Depending on your insurance carrier, you may or may not be able to buy this coverage, and the deductible apparently can be very low, or up to 10% of the value of you house.
IMHO, call your carrier, confirm what you have and what you have access to in additional coverage.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV.
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