MD HB247

Establishes a rebuttable presumption that existing accessory structures or uses on a parcel demonstrate "reasonable and significant use," making it harder to obtain variances for new accessory structures in the Critical Area.

Prohibits local jurisdictions from accepting variance applications that would authorize uses not allowed by the land classification, adjust required mitigation amounts, or provide relief available through existing administrative processes.

Adds two new variance approval requirements: applicants must demonstrate substantial need not based on convenience, personal preference, or financial advantage, and must show development cannot be located outside a habitat protection area.

Restricts property comparisons for variance claims to other Critical Area properties that were developed after the local program's adoption, were legally conforming at development, and are similarly situated.

Requires local boards of appeals to hear Critical Area variance appeals on the record and grant deference to administrative officers' findings of fact; effective October 1, 2026.