Maryland Just Passed America’s First Statewide STR Safety Law. Here Is What Every Host Needs to Know.

Maryland just became the first state in the country to establish a statewide minimum safety standard for every short-term rental operating within its borders. The Jillian and Lindsay Wiener Short-Term Rental Safety Act, which passed the House 111-16 and the Senate 40-0, requires all STR units to be equipped with working smoke alarms, carbon monoxide detectors, a fire extinguisher, and a posted evacuation plan. No other state has done this.

That distinction matters. While cities like Pittsburgh and Birmingham have enacted safety-related STR ordinances in response to specific tragedies (a fatal shooting, a house fire), those were reactive, localized measures targeting party houses and nuisance properties. Maryland’s law is something categorically different: a proactive, universal safety floor that applies to every STR in every county, regardless of whether a tragedy has occurred locally. It is the legislative equivalent of saying “we are not going to wait for someone to die here before we act.”

If you operate an STR in Maryland (and StaySTRA data shows there are thousands of you, with Ocean City alone tracking 7,954 active listings and Baltimore tracking another 2,208), here is exactly what the law requires, when it kicks in, and what happens if you ignore it.

The Tragedy Behind the Law

The bill is named after Jillian and Lindsay Wiener, two sisters from Potomac, Maryland, who died in a fire at a short-term rental property in Noyac, Long Island, on August 3, 2022. Jillian was 21, a rising senior at the University of Michigan. Lindsay was 19, a rising sophomore at Tulane. Both were graduates of the Holton-Arms School in Bethesda.

The rental property’s smoke and carbon monoxide detectors were not properly connected. No battery backup existed. An investigation after the fire found 29 code violations. The owners, Peter and Pamela Miller, had constructed an outdoor kitchen without permits or electrical inspection, which is where the fire started.

Peter Miller pleaded guilty to two counts of criminally negligent homicide. Pamela Miller pleaded guilty to reckless endangerment in the second degree. He received three years of probation and 200 hours of community service. She received 100 hours of community service.

The Wiener family’s tragedy became the catalyst for Maryland legislators to ask a question that, frankly, should have been asked years ago: why is there no baseline safety standard for the places where millions of Americans sleep every year?

What the Law Requires: Four Non-Negotiable Safety Items

HB 1221 (cross-filed as SB 624) establishes four specific requirements for every short-term rental unit in Maryland. These are not suggestions. They are legal mandates with criminal penalties attached.

1. Posted Evacuation Diagram

Every STR must conspicuously post an evacuation diagram identifying all exits from the unit. If the unit is inside a larger building (a condo, for example), the diagram must also show the building’s exits. This is a standard practice in hotels that has never been uniformly required in short-term rentals. Now it is, at least in Maryland.

2. Emergency Contact Information

Hosts must conspicuously post a list of emergency telephone numbers for local law enforcement and fire rescue services. Not buried in a welcome binder. Not linked in a check-in email. Posted where a guest can see it without having to search.

3. Working Fire Extinguisher

Every unit must have a working fire extinguisher readily available. The NFPA 101 Life Safety Code (2024 Edition), which Maryland has adopted as part of its State Fire Prevention Code, requires portable fire extinguishers in health care facilities, detention facilities, and businesses. It does not, however, include provisions for short-term rental units. This bill fills that gap.

4. Working Smoke and Carbon Monoxide Alarms

This is the most technically detailed requirement in the bill, and it deserves careful attention.

Smoke alarms and CO alarms must be installed and maintained in accordance with state, county, and municipal fire codes. Smoke alarms must comply with NFPA 72 (the National Fire Alarm and Signaling Code), be listed and labeled by a nationally recognized testing laboratory, and sound an alarm suitable to warn occupants.

If multiple smoke alarms are required in the unit (which, in most properties with multiple bedrooms, they will be), those alarms must be interconnected so that the activation of one alarm activates all alarms in the unit. The alternative: comply with a requirement authorized by the State Fire Marshal in consultation with the State Fire Prevention Commission. In practice, this means interconnected alarms are the default expectation.

Both smoke and CO alarms must be replaced if they stop functioning, are more than 10 years old (based on the production date on the back of the device), or have no production date on the device at all. Flip your alarms over. If you cannot find a date, the law treats them as expired.

Picture this: you are a host who bought combination smoke/CO detectors five years ago and assumed they were fine. Under Maryland’s new law, you need to verify each device has a visible production date, confirm it is less than 10 years old, and ensure all smoke alarms in the unit are interconnected. If your property has standalone alarms that do not trigger each other, you are out of compliance on day one.

CO alarms must be installed outside of and within the immediate vicinity of each separate sleeping area and on every level of the unit, including the basement. This was already required for rental dwelling units in Maryland under Chapters 174 and 175 of 2016. The new law brings STRs explicitly under the same umbrella.

Who Must Comply

Everyone. The law applies to all short-term rental units offered for rental for less than 30 consecutive days. The definition of “short-term rental unit” is broad: a residential dwelling unit or a portion of the unit designed for short-term rentals, including single-family homes, multifamily dwellings, apartments, condominiums, and cooperatives.

There is no minimum night threshold. There is no exemption for owner-occupied properties. There is no grandfather clause for existing listings. If you rent any residential space to transient guests for consideration, you are covered.

StaySTRA data for Ocean City, Maryland shows 7,954 active short-term rental listings, the largest concentration in the state. Baltimore has 2,208 active listings. Montgomery County reported 721 short-term rental units as of January 2026. Across the state, the total number of STRs that must comply is substantial, though no single statewide registry currently exists to produce an exact count.

What Booking Platforms Must Do

The law does not stop at hosts. It creates obligations for booking services (the bill’s term for platforms like Airbnb and Vrbo) that go beyond anything currently required at the state level.

A “booking service” is defined as a person who provides a platform that lists and advertises short-term rentals, accepts offers or allows reservation/payment, and receives a fee. Platforms that solely list or advertise offers (without processing transactions) are excluded.

Every booking service must electronically notify all Maryland hosts of the fire safety requirements. And every booking service must require each host to provide compliance documentation confirming they meet the requirements. This is not optional platform-side courtesy. It is a statutory mandate. Expect Airbnb and Vrbo to build compliance verification workflows for Maryland listings before October 1.

Inspections: The County-Level Layer

Here is where the law gets interesting from a structural standpoint (yes, I find inspection frameworks interesting, occupational hazard).

By July 1, 2028, every county and Baltimore City where short-term rentals are permitted must, by local law or regulation, require annual inspections of all STR units for compliance. This is a mandate on local governments, not a suggestion.

Counties that already prohibit short-term rentals entirely are exempt from the inspection and reporting requirements. But if your county allows STRs, it must build an inspection apparatus.

Counties may establish fees to cover inspection costs. They may also, in consultation with the State Fire Marshal, delegate inspections to third-party inspectors who meet qualifications set by the State Fire Marshal’s Office and hold certification from a nationally recognized fire safety organization.

Montgomery County, for example, has already estimated it will need to hire one code inspector at a cost of approximately $152,460 in fiscal year 2027 to cover its 721 STR units. Harford County, which does not yet know how many STR units are in its jurisdiction (a telling detail in itself), estimates it will need two new staff at approximately $200,000.

Each county must submit a report to the State Fire Marshal by July 1, 2028, summarizing all local STR inspection laws, the number of units inspected, and the number of units in compliance. The State Fire Marshal must then report to the General Assembly by October 1, 2028.

Penalties for Non-Compliance

Violations fall under existing criminal penalty provisions in Maryland’s Public Safety Article. A person who knowingly violates the State Fire Prevention Code or a regulation adopted by the State Fire Prevention Commission is guilty of a misdemeanor. On conviction, the penalty is imprisonment for up to 10 days and/or a fine of up to $1,000.

That may sound modest. But consider the structure: each violation is a separate offense. A unit with no smoke alarm, no CO detector, no fire extinguisher, and no evacuation plan could represent four separate violations. And these are criminal penalties, not civil fines. A misdemeanor conviction, even a minor one, carries consequences that extend well beyond the dollar amount of the fine.

This article provides general information and should not be construed as legal advice. Consult a qualified attorney in your jurisdiction for advice specific to your situation.

What the Law Does Not Do

Two critical limitations deserve emphasis.

First, the law does not preempt local authority. Counties and Baltimore City may enact additional measures regarding short-term rentals beyond what the bill requires. If your county already has stricter safety requirements (Ocean City, for instance, already mandates smoke detectors, CO detectors, and fire extinguishers as part of its rental licensing), the state law does not replace those local rules. It establishes a floor, not a ceiling.

Second, the law does not require any county or Baltimore City to authorize short-term rentals in its jurisdiction. If your county currently prohibits STRs, this bill does not force them to allow them. It only applies to jurisdictions where STRs are already permitted.

This is a deliberate structural choice that distinguishes Maryland’s approach from the preemption model adopted by states like Indiana (HEA 1210), which stripped local governments of the power to ban or cap STRs. Maryland went the opposite direction: it set a baseline safety standard while explicitly preserving every county’s authority to regulate STRs however they see fit.

Will Other States Follow?

The honest answer: probably. But not quickly, and not uniformly.

The Maryland Department of Legislative Services noted that similar legislation has not been introduced in any state within the last three years. Maryland is genuinely first. But the political dynamics that enabled this bill, including bipartisan support (111-16 in the House, 40-0 in the Senate), the named-victim framing, and the fact that the requirements are genuinely minimal (we are talking about smoke alarms and fire extinguishers, not occupancy caps or noise monitors), make it a template that other state legislatures can adopt with very little political risk.

The national landscape for STR regulation is moving along two distinct tracks. One track is preemption: states like Indiana and Idaho stripping local governments of regulatory power over STRs. The other track is baseline safety: states establishing minimum standards that apply everywhere. Maryland is the first mover on the second track.

States with large STR markets and active legislatures (Florida, Colorado, North Carolina, Tennessee) are the most likely candidates to follow. The question is not whether other states will adopt statewide STR safety standards. The question is whether they will do it proactively, like Maryland, or reactively, after their own tragedy makes the evening news.

Your Compliance Checklist

If you operate a short-term rental in Maryland, here is what you need to do before October 1, 2026:

Smoke alarms. Verify every smoke alarm in your unit has a visible production date and is less than 10 years old. Confirm all smoke alarms are interconnected (one triggers all). Install per NFPA 72 standards in each sleeping area.

Carbon monoxide alarms. Install CO alarms outside and near each sleeping area and on every level of the unit, including the basement. Verify each device is less than 10 years old and has a visible production date.

Fire extinguisher. Provide a working portable fire extinguisher in a readily accessible location. Check the pressure gauge and inspection tag. Replace if expired.

Evacuation diagram. Create and conspicuously post a diagram showing all exits from the unit. If the unit is in a multi-unit building, include the building’s exits.

Emergency contacts. Post a list of emergency telephone numbers for local law enforcement and fire rescue services in a visible location.

Documentation. Expect your booking platform to request compliance documentation. Have records ready: purchase receipts for alarms and extinguishers, photos of posted evacuation plans and emergency contacts, and maintenance logs showing device testing and replacement dates.

The total cost of compliance for most properties will be modest. A set of interconnected smoke alarms runs $30 to $80. A quality CO detector costs $25 to $50. A fire extinguisher is $20 to $40. An evacuation diagram can be created for free. The law is not asking for expensive retrofits. It is asking for the bare minimum equipment that keeps people alive.

We do our best to keep our regulatory guides accurate and up to date, but ordinances change and we are only human. Always verify current requirements directly with your local municipality before making business decisions.

What This Means for Maryland Hosts and Investors

Whether you are a Maryland host preparing for October 1 or a host in another state watching this unfold, the signal is clear: statewide STR safety regulation is no longer theoretical. Maryland built the template. The requirements are reasonable, the compliance costs are low, and the political support was overwhelming.

The hosts who will navigate this best are the ones who were already running their properties responsibly. If your STR already has working smoke alarms, CO detectors, a fire extinguisher, and clear exit information posted for guests, you are likely already in compliance. If not, you have until October 1 to get there. Six months is more than enough time to spend $150 on equipment that could save someone’s life.

If you are evaluating STR investments in Maryland, use the StaySTRA analyzer for Ocean City or Baltimore to see current market data, including occupancy rates, ADR, and revenue trends. Understanding the regulatory environment is part of understanding the market, and Maryland just became one of the most clearly defined regulatory environments in the country. For a deeper look at how STR insurance intersects with safety compliance, that guide is worth a read alongside this one.