SB 12·MD·senate
Residential Rental Apartments - Air-Conditioning Requirement
Signed into LawFiled Oct 20, 2025
Sponsor: West
Latest Action
Approved by the Governor - Chapter 664
May 26, 2026
Summary
The law requires landlords of rental apartments with ten or more units to supply air‑conditioning for each unit, either by installing systems or ensuring existing ones work, starting June 1 2026 for new construction and October 1 2026 for renovations that replace major electrical or heating systems. Certain historic, mid‑century, and specific public‑housing units are exempt, and the rule overrides any conflicting local regulations.
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