It’s one of the most common — and most underreported — problems in Baltimore residential property management. A tenant signs a lease with two authorized occupants, and six months later, there are three people living there, or an entirely different tenant paying rent to your original leaseholder. Unauthorized subletting and unauthorized occupants are distinct problems under Maryland law, and both require a specific, documented response.

Get it wrong — by acting too fast, not documenting properly, or misunderstanding the eviction path — and you can find yourself facing a counterclaim or a dismissed case. Get it right, and you can restore lease compliance or remove a problem tenant through a process that Baltimore District Court will support.

Here’s the complete 2026 guide for Baltimore City and Baltimore County landlords.

Guest vs. Unauthorized Occupant: Why the Distinction Matters

Maryland law doesn’t draw a bright line defining when a guest becomes an unauthorized occupant, which is exactly why your lease needs to. In practice, the distinction typically turns on two factors: duration and exclusivity. A guest who stays two weeks and leaves isn’t an occupant. Someone who has moved in their belongings, receives mail, and has been sleeping there for 60 days is.

An unauthorized occupant is someone living in the unit who is not listed on the lease and for whom no written landlord consent was given. An unauthorized subletter is a step further: your leaseholder has rented the unit to a third party — often collecting rent from them — without your knowledge or written permission. Both are lease violations, but a subtenant creates additional legal complexity because they may have acquired some occupancy rights of their own.

Maryland’s Rules on Subletting: Written Permission Is the Standard

Under Maryland law, a tenant may not sublet their rental unit without the landlord’s written consent unless the lease specifically allows it. This is the default rule — and any well-drafted lease should reinforce it explicitly with language prohibiting subletting and Airbnb-style short-term rentals without prior written approval from the landlord.

What this means in practice: if your lease is silent on subletting, a tenant could argue they had the implied right to do so. If your lease says “no subletting without written consent,” the violation is unambiguous and your case in front of a Baltimore District Court judge is far stronger.

Your lease should also define what counts as an authorized occupant — by name — and specify that adding occupants requires written landlord approval. A guest policy clause (e.g., “guests may not stay more than 14 consecutive days without written landlord consent”) closes the gap between informal visits and unauthorized tenancy.

What to Do When You Discover an Unauthorized Occupant: Step by Step

The worst thing you can do when you suspect an unauthorized occupant is act on instinct — changing locks, cutting utilities, or verbally threatening eviction. All of those actions expose you to counterclaims and can turn a winnable lease-violation case into a liability. Here’s the correct sequence:

• 1
  Document before you act. Visit the property for a scheduled inspection (24 hours’ written notice required under Maryland law). Photograph the unit and note any evidence of additional occupancy — extra belongings, multiple names on mail, unfamiliar vehicles consistently parked at the property. Your documentation is the foundation of your legal case.
• 2
  Communicate in writing before escalating. Send a written notice to the tenant acknowledging what you’ve observed and asking for a written explanation. Their response — or non-response — becomes part of your record. Do not accept a verbal explanation; everything must be documented in writing.
• 3
  Issue a 30-day Notice to Cure. Under Maryland § 8-402.1, you must give the tenant written notice specifying the lease violation and providing 30 days to cure the breach before you can file for eviction. This notice must be properly served — in person, or by certified mail to the rental address. An improperly served notice will delay your case.
• 4
  If not cured within 30 days, file in Baltimore District Court. If the violation continues after the 30-day cure period, you can file an eviction complaint for breach of lease (§ 8-402.1) at Baltimore City District Court. The filing fee is $60 in Baltimore City. Bring your lease, the notice to cure, proof of service, and all documentation from Step 1.
• 5
  Attend the hearing prepared. Baltimore District Court will schedule a hearing, typically within 2–4 weeks of filing. The judge will determine whether the breach is “substantial” enough to warrant eviction. A clear, documented case — proper notice, written proof of the violation, no retaliatory conduct — typically meets that standard.

What Happens in Baltimore District Court for Breach of Lease

When you file a breach of lease complaint under § 8-402.1, the court schedules a hearing where both you and the tenant have the opportunity to present their case. The judge evaluates whether the breach is material — meaning significant enough to justify terminating the tenancy.

Unauthorized subletting, where your tenant has essentially turned over your property to a third party without your consent, is typically viewed as a serious breach. Unauthorized occupants — where a lease-compliant tenant has added one extra person — may be treated with more nuance. In those cases, judges may require cure rather than immediate possession, particularly if the tenant has otherwise been current on rent and maintained the property.

If the court grants possession, a warrant of restitution is issued. Under the 2024 Renters’ Rights and Stabilization Act, there is now a mandatory 7-day wait period between the judgment and execution of the warrant. Factor this into your timeline.

If there is a subtenant — a third party who has been paying rent to your leaseholder — their legal status is more complex. The safest path is to ensure your original leaseholder is named in the eviction, and that any subtenant present at the hearing is addressed as a party to the proceedings. Consult with a Maryland landlord-tenant attorney if the situation involves a subtenant who has occupied the unit for an extended period.

Prevention: How to Stop This Before It Starts

The best version of this situation is one that never happens. The lease provisions, inspection practices, and screening protocols that prevent unauthorized subletting are all within your control — and far less expensive than a court proceeding.

Lease language that closes the loopholes

Your lease should explicitly prohibit subletting without written consent, define authorized occupants by name, include a guest policy with a day limit, and ban short-term rental platforms by name. These provisions don’t prevent tenant relationships from evolving — they create a documented baseline that gives you legal standing when they cross a line.

Periodic inspections on your calendar

Maryland law allows landlords to enter with 24 hours’ written notice for inspections at reasonable times. Building a semi-annual or annual inspection schedule into your lease management routine lets you identify unauthorized occupants early — when a conversation and a written warning may resolve the issue without litigation. Waiting until a neighbor complains or a utility bill spikes is waiting too long.

Annual lease renewals as a control point

Each lease renewal is an opportunity to confirm the current occupants on record, update emergency contacts, and reassess the tenancy. Landlords who let leases roll month-to-month indefinitely without a renewal conversation lose visibility into who is actually living in their property.

The Bottom Line for Baltimore Landlords

Unauthorized subletting and unauthorized occupants are more common than most Baltimore landlords realize — and more manageable than they fear. The key is knowing the difference between the two, having a lease that unambiguously prohibits both, following the correct legal process when you discover a violation, and building inspection and communication habits that surface problems early.

Maryland law gives you the tools to address this through court — but only if you use them in the right order, with proper documentation, and on the correct legal timeline. A 30-day notice to cure, served correctly, is your starting point. Baltimore District Court, filed correctly, is your backstop. The landlords who get into trouble are the ones who skip steps, act emotionally, or don’t have lease language that supports their case.

If you’re managing your Baltimore rental alone and this situation has already started, the time to act is now — with documentation in hand and the correct legal sequence mapped out.