MD HB4

Restrictions on land use (in deeds, HOA rules, contracts, etc.) are prohibited if they increase solar collector system installation costs by at least 5% or reduce energy generation by at least 10% compared to the initially proposed installation.

Property owners must provide documentation from a certified solar panel design specialist (NABCEP-certified or having designed at least 30 systems in the prior 3 years) to demonstrate that a restriction is unreasonable.

Community associations retain authority to prohibit, restrict, or regulate solar collector systems in common areas and common elements, including setting rules on number, size, and placement.

Community association boards may install solar collector systems in common areas at their discretion, provided installation is not otherwise prohibited by law.

The law does not apply to historic properties listed in or eligible for the Maryland Register of Historic Properties; effective October 1, 2025.