HB 153 would create a new statewide requirement for certain residential rental apartments to have air-conditioning. The bill applies to residential rental units in apartment buildings with four or more units, but excludes certain historic properties and specified Baltimore City Housing Authority developments and rehabilitated public housing units. For covered units, landlords must provide air-conditioning in newly constructed units beginning June 1, 2026, and in renovated units involving substantial electrical or heating system work beginning October 1, 2026.
The bill also sets a summer operating standard for covered units from June 1 through September 30 each year. If the air-conditioning system is not tenant-controlled, the landlord must maintain the unit at no more than 80 degrees Fahrenheit measured three feet above the floor in each habitable space. If the system is tenant-controlled, the landlord must ensure the system is in good working order and capable of maintaining that temperature. The bill expressly allows local governments to adopt and enforce stricter air-conditioning requirements, and it applies only prospectively to construction or renovation projects with building permits issued after the effective date.
In terms of state law, HB 153 adds a new section to the Real Property Article, Section 8-122, creating an affirmative landlord duty tied to apartment construction and major renovation. It affects landlords, tenants, apartment developers, and property managers by establishing a minimum cooling standard in certain rental housing and by limiting retroactive application to previously permitted projects. The measure takes effect June 1, 2026.
The available legislative history suggests generally favorable sentiment, as the House passed the bill 90-30 after the committee reported it favorably with amendments. That vote indicates meaningful support, but not unanimity, likely reflecting a policy split over housing regulation, compliance costs, and tenant health and habitability standards. No committee transcript is available, so the record does not show detailed debate, but the amended committee posture and the final floor vote suggest the bill was broadly supported while still controversial.
The main points of contention likely involve the cost and feasibility of requiring air-conditioning in rental housing, especially for landlords facing retrofit or operational expenses, versus the tenant protection and public health benefits of limiting excessive indoor heat. The bill’s exemptions for certain historic and public housing properties also suggest concern about implementation in older or specialized housing stock. Local governments are preserved as a source of stricter standards, which may be viewed positively by tenant advocates but as an added regulatory burden by property owners.
HB 153 adds a new landlord obligation to the Maryland Real Property Article requiring air-conditioning in certain apartment rental units and establishing a summer temperature standard for those units. It directly affects landlords of qualifying apartment buildings, tenants in those units, and developers undertaking new construction or major renovations, while carving out specified historic and public housing properties and allowing local governments to impose stricter rules.
The bill appears to have had generally favorable support in the House, as reflected by a 90-30 third-reading passage and a favorable committee report with amendments. The vote margin suggests the measure was supported by a clear majority but still drew substantial opposition, likely from members concerned about regulatory costs, implementation burdens, or the scope of the mandate.
The likely points of contention are the cost of installing or upgrading air-conditioning systems, the operational burden on landlords, and whether a statewide mandate is appropriate for all covered rental apartments. Opponents may also have concerns about retrofitting older buildings, while supporters likely emphasized tenant health, habitability, and protection from extreme heat. The exemptions for historic properties and certain Baltimore City public housing developments indicate that the bill’s sponsors and committee also recognized practical limits and special-case housing conditions.