When the deductible applies
Under Insurance Article section 19-209, a mandatory hurricane deductible applies from the time a hurricane warning is issued for any part of Maryland until 24 hours after the last hurricane warning for any part of the state ends, regardless of where in the state the home is located.
The 5% limit
An insurer may not adopt an underwriting standard that requires a hurricane deductible above 5% of the dwelling (Coverage A) limit unless the insurer has filed that standard with the Maryland Insurance Commissioner.
Notice
Section 19-209.1 requires a percentage deductible notice when the policy is first issued and at each renewal, describing the deductible and when it applies.
What a 2% deductible costs
A percentage deductible is applied to the dwelling coverage limit (Coverage A), not to the damage. On $300,000 of dwelling coverage a 2% deductible is $6,000; on $500,000 it is $10,000. Covered storm damage below that amount is paid by the homeowner.
Read your own declarations page and deductible endorsement: the policy wording, together with state law, decides which deductible applies to a loss. This page summarises the official state guidance only.