New Maryland Lead Law: What It Means If You Rent Rooms in Your Home
Starting October 1, 2026, Maryland is closing a long-standing gap in its lead paint law. A new state law expands the definition of a “rental dwelling unit” to include rooms rented within an owner-occupied home, even when tenants share a kitchen or bathroom down the hall. For homeowners renting out a room or two in a house built before 1978, this is a meaningful change worth understanding well before the effective date.
Why It Matters
Maryland’s lead law has applied to traditional rental units for decades, but rooms rented within an owner-occupied home, sometimes called single room occupancy arrangements, previously existed in a gray area. Because the old definition required a unit to be “independent,” with its own private kitchen and bathroom, landlords in these shared-living situations could argue their rooms didn’t meet the legal definition of a rental dwelling unit. The new law removes that word, meaning a room is covered even if it shares access to sanitation or cooking facilities. This closes the loophole and brings these arrangements under the same lead safety requirements as any other rental.
What the Law Requires
Under Maryland’s Lead Risk Reduction in Housing Law, a covered rental dwelling unit built before 1978 must meet one of a few specific certification standards. For homeowners renting rooms in a pre-1978 property, these now apply directly:
- Registering with the Maryland Department of the Environment (MDE) on or before October 1, 2026
- A Full Risk Reduction certificate, the standard most owners will pursue before renting to a new tenant
- A Modified Risk Reduction certificate, required in response to a tenant’s notice of defects or a lead exposure finding
- Lead Free or Limited Lead Free certification, available if testing shows the property doesn’t contain lead-based paint
- Ongoing renewal, since registration and certain certificates must be kept current over time
Full Risk Reduction Certification
This is the certification most owners will work toward, and it’s generally completed in a vacant unit before a new tenant moves in. Before testing, any chipping, peeling, or flaking paint on the interior or exterior of the unit must be removed or repainted. Once the paint condition meets that standard, an MDE-accredited inspector collects dust samples from each room and sends them to a qualified laboratory. If every sample comes back below the specified thresholds, the inspector can issue a certificate. Because the standard depends on passing a dust test, it tends to go more smoothly in a unit that’s already clean and well maintained going in.
Modified Risk Reduction Certification
A Modified Risk Reduction inspection isn’t the default path. It’s triggered either by written notice from a tenant (or anyone else) reporting a defect in the unit, or within 30 days of MDE learning that a pregnant woman or child under six with a blood lead level of 5 micrograms per deciliter or more lives there and an environmental investigation has identified defects. This standard is met either by relocating tenants to a lead-free or already-compliant unit, or by completing specific lead hazard reduction treatments through an accredited contractor or supervisor and then passing the dust test.
Lead Free and Limited Lead Free Certification
If testing shows a unit has no lead-based paint at all, defined as XRF readings below 0.7 mg/cm² or paint chip samples below 0.5 percent by weight, the property can qualify for Lead Free certification, which exempts it from annual registration fees and further risk reduction requirements. If lead paint is found, an accredited abatement contractor can fully remove it, after which an inspector can issue the certificate, though the law doesn’t require full abatement of every trace of lead paint in a property. A unit with no lead paint found on interior surfaces but some present on the exterior may instead qualify for a Limited Lead Free certificate, which requires a visual check confirming no chipping, peeling, or flaking on those exterior surfaces. Both Lead Free and Limited Lead Free certificates must be re-inspected every two years by the original certification date, or the certificate is no longer considered valid, and owners must submit a $10 per unit processing fee with each certification submitted to MDE.
Registration Deadline and Process
Owners renting rooms in a covered property need to register with MDE by October 1, 2026. This registration is separate from, but works alongside, the certification path chosen above, and it’s the starting point for coming into compliance under the updated definition.
Seasonal Considerations
This change arrives at a practical time for homeowners to take stock of their properties before winter, when many people also start thinking about other home maintenance items. According to the Maryland Department of the Environment, owners of pre-1978 rental properties must register with the state, renew as required, and provide valid lead certificates at each tenant turnover, and the same standard now applies more broadly under the updated definition. Given that October 1 falls early in the fall season, homeowners renting rooms have a limited window to register and, if needed, schedule an inspection before the deadline arrives.
Older homes carry more than one maintenance consideration at once, and lead compliance is a good reminder to look at a property’s overall condition. Our earlier post on when you should get a lead paint inspection covers the signs that point to testing being worthwhile, along with what the process generally involves, which pairs directly with the registration and certification steps outlined above.
When Further Evaluation Is Recommended
A few situations call for prompt attention from an MDE-accredited lead inspector or the department directly:
- A pre-1978 home currently renting out one or more rooms that hasn’t been registered with MDE
- A unit with visible chipping, peeling, or flaking paint that hasn’t yet been addressed ahead of a Full Risk Reduction dust test
- A tenant who has reported a paint defect, or a household with a pregnant occupant or child under six
- An existing Lead Free or Limited Lead Free certificate that’s due, or overdue, for its two-year re-inspection
- Uncertainty about whether an existing room rental arrangement counts as a “rental dwelling unit” under the new definition
None of these situations are cause for panic. MDE’s lead program has resources and a registration process designed to walk owners through exactly what’s needed.
Supporting Long-Term Compliance and Prevention
A few steps help homeowners stay ahead of this change rather than scrambling as the deadline approaches. Registering with MDE well before October 1 avoids a last-minute rush. Reaching out to an MDE-accredited inspector early gives more flexibility in scheduling as more owners become aware of the requirement closer to the deadline. Keeping documentation organized, including registration confirmations and any prior lead certificates, makes future turnovers and renewals more straightforward.ay to get a clear answer specific to their property.
