NYC Local Law 18: What It Actually Is (Short-Term Rentals, Not Lobbies)

If you searched "NYC Local Law 18" and were expecting something about lobby intercoms, building access, or door buzzers — you've found the wrong law. Local Law 18 of 2022 is the NYC short-term rental registration law that took effect in September 2023 and effectively ended Airbnb-style rentals under 30 days for the vast majority of NYC hosts. It is one of the most consequential housing laws of the past decade for owners who rent on a per-night basis.

Here's what it actually says.

01 · WHAT IT REQUIRESMandatory registration

LL18 requires that anyone who rents a NYC dwelling unit for fewer than 30 consecutive days must register with the NYC Mayor's Office of Special Enforcement (OSE) before any such rental can occur. Booking platforms — Airbnb, Vrbo, Booking.com — are required to verify that a unit is registered before processing the booking.

If you're not registered, you can't legally rent short-term in NYC. If a platform processes a booking for an unregistered unit, the platform is liable.

02 · THE TWO TESTS THAT MOST RENTALS FAILWhy this is effectively a ban

To register, your rental has to pass both of these tests:

• Owner-occupied at the time of the rental. The host must be physically present in the dwelling unit during the guest's stay. (This rules out vacation-style "I'm out of town, you have the place" rentals.)
• Maximum two guests at a time. No matter how big the unit. Two guests, full stop.

The owner-occupancy requirement alone disqualifies most Airbnb business models. Most NYC short-term rentals were "host is elsewhere, guest has the unit" — exactly what LL18 prohibits. The two-guest cap further restricts the remaining cases.

03 · WHAT'S ALLOWEDThe narrow corridor

Under LL18, a host can legally short-term rent if:

• They live in the dwelling unit (it's their primary residence).
• They are physically present in the unit while a guest is staying.
• The unit has at most two paying guests at a time.
• The unit isn't a rent-stabilized apartment (separate rules).
• The building's certificate of occupancy permits this use.
• Multiple-dwelling-law buildings (3+ units) require additional considerations.

This is the spare-room model: an owner who lives in their own apartment and rents the second bedroom while they're home. Everything else became illegal in September 2023.

04 · 30-DAY THRESHOLDThe escape hatch

LL18 only applies to rentals under 30 days. Rentals of 30 days or more — typical mid-term furnished apartments, corporate housing — are not regulated by LL18. This is why many former Airbnb hosts pivoted to 30-day-minimum rentals. The math is different (lower nightly rate, longer guest stays), but it's legal.

05 · PENALTIESWhere the teeth are

Violations of LL18 carry significant penalties:

• First violation: $1,000–5,000 per booking.
• Second violation: up to $7,500.
• Subsequent violations: up to $7,500 per booking, no cap.
• Booking platforms: up to $1,500 per illegal booking processed.
• Building owners (separate from hosts): can be cited if they knowingly permit unregistered short-term rentals in their building.

The OSE has been actively enforcing — ~5,000 unregistered listings were taken down in the first year. Hosts have had multi-thousand-dollar fines stick.

06 · WHAT IT MEANS FOR BUILDING OWNERSLiability beyond hosts

If you own a multi-family rental building and tenants are listing units on Airbnb without registration, you can be cited for permitting illegal short-term rental use. OSE has used this provision against landlords who looked the other way.

Most NYC institutional landlords now include explicit anti-Airbnb clauses in leases and actively monitor for illegal listings. ViolationWatch surfaces 311 complaints related to short-term rental activity, which is one of the early signals that a tenant is operating an unregistered listing.

07 · BOTTOM LINELL18 in one paragraph

NYC Local Law 18 is the short-term rental registration law that requires NYC hosts to register with OSE before any rental under 30 days. Registration requires the host to live in the unit and be physically present during the rental, with a maximum of two guests at a time. This eliminated most Airbnb-style rentals in NYC starting September 2023. Penalties run $1,000–7,500+ per booking; building owners can also be cited for permitting unregistered rentals in their buildings. If you need 30-day-plus rentals, that's the legal path.

Related

• NYC short-term rental crackdown — what landlords need to know
• Top 5 Airbnb host violations in NYC
• Local Law Tracker — surfaces 311 complaints + tracks every applicable local law per building