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Boston short-term rental registration: home share, limited share and the owner-adjacent unit

Sergej Sitki · founder of ReceptionGO and host
Published November 1, 2026 · 5 min read

General information, not legal or tax advice. Rules change often and vary by state, county and city — confirm your situation with the local agency or a CPA.

Boston lets you rent for fewer than 28 days only in an owner-occupied condo, single-family, two-family or three-family, and only if you register the unit with Inspectional Services. A limited share is a room while you are home ($25 a year). A home share is your whole primary residence ($200). An owner-adjacent unit is the other apartment in a two- or three-family you live in and fully own ($200). Investor units are not eligible.

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Boston’s ordinance, in the code as §9-14, is an owner-occupier law. It is not a night cap on investors. Investors are simply not in the program. If you live in the unit nine months of the year, you can register it and rent it for fewer than 28 days. If you do not, the eligibility dataset will say no, and a listing that pretends otherwise is the violation.

The three unit types

Eligible buildings are owner-occupied condos, single-families, two-families and three-families. In a two- or three-family, the owner-occupant has to own every unit. Four-family and larger buildings are where most “I bought it to Airbnb” plans die.

Primary residence means nine months out of twelve, looking backward or forward, proved by two of: residential exemption, a full utility bill, voter registration, vehicle registration, the deed, or a driver’s license or state ID. The registration number is good for that calendar year, January 1 through December 31, and it is tied to one unit and one operator. Only one owner may be the operator.

Where people get rejected

• The unit is on the ineligible units list — affordable housing, or a building that has already used up what the ordinance allows.
• The lease, condo documents or a court order forbids short stays. Registration does not overrule them. More on that in HOA and condo rules.
• You are a tenant without the owner’s written authorization, or you are not the owner-operator the ordinance requires.
• You offer two whole units at once. The code limits you to one whole-unit listing at a time.

Check the address in the city’s eligibility dataset before you furnish anything. “Yes” under a column is permission to apply, not a registration.

Tax and enforcement

Massachusetts taxes these stays as short-term rentals, and a local option can sit on top. Treat platform collection as a fact you verify on the payout, not as a rumor. Direct bookings are yours to tax — the occupancy tax guide is the national version of that sentence. ISD enforces from listings without numbers and from complaints. Three qualifying violations in a short window is how a registration gets suspended; the overview of that pattern is in short-term rental laws by city.

New York City, a train ride away, is stricter still: the host has to be present and the cap is two guests. If you operate in both, do not reuse a Boston setup in Manhattan. The NYC rules are in the Local Law 18 guide.