How subletting works in Boston
A sublet has three people in it: the landlord (owns the building), the original tenant (signed the 12 month lease, also called the sublessor or master tenant), and the subtenant (you, taking over for a month or three).
The original tenant stays on the hook with the landlord. You pay them directly, on terms you both agree to. In Boston they're usually a student leaving for the summer, a grad researcher heading out for fieldwork, a med resident on a rotation in another city, or someone splitting time between Boston and somewhere else. They don't want to break their lease just because they're gone for a stretch.
For you, that's the unlock. You get a real furnished apartment, already on Wi Fi, often with a T stop two blocks away, without paying first, last, and a security deposit on top of moving costs, without buying a bed and a couch you'll resell on Facebook in ninety days, and without signing your name to twelve months of Boston rent you can't predict.
The catch: Boston has a 28 day minimum on most rentals. Anything shorter falls under the city's Short Term Rental Ordinance, a different (and tightly enforced) category that requires the unit to be the host's primary residence, an annual registration with the city, and a business certificate. Most apartment buildings ban anything under 28 days in the lease.
Are sublets legal in Boston?
Yes, when they follow three rules.
1. Stays must be 28 days or longer. Boston's Short Term Rental Ordinance defines a short term rental as any stay of fewer than 28 consecutive days. Those require a registered owner occupied unit, neighbor notification, and the registration number on every listing. A 1 to 3 month sublet sits clearly outside that regime and is treated as a normal lease takeover.
2. The original tenant needs landlord consent. Massachusetts doesn't have a state statute that grants tenants an automatic right to sublet, the way New York does. The rule is contractual. If the lease requires the landlord's written consent (and almost every Boston lease does), the tenant has to ask. Under Massachusetts common law, the landlord can't unreasonably withhold that consent. Ask in writing, keep the paper trail. Massachusetts General Laws Chapter 186 is the section that governs tenancy generally and worth a skim if you're new to the topic.
3. The building has to allow it. Most Boston leases require written landlord approval for any sublease or lease assignment. Co ops and some condos ban subletting outright in their bylaws. Boston Housing Authority and other publicly assisted units prohibit subletting almost entirely. If you're in BHA housing or a Section 8 unit, this isn't a path for you.
Massachusetts also caps total security deposits at one month's rent under MGL c.186 §15B, and the cap applies across the original tenant and any subtenant combined. If your sublessor already gave the landlord a month's deposit, they can't legally collect another full month from you.
How to find a sublet in Boston
The classic playbook (Craigslist, Facebook groups, the BU off campus housing board, the dorm GroupMe) still works, but every one of those channels is now flooded with rental scams. The number of "verified" Facebook listings that turn out to be photos pulled from Zillow is genuinely staggering. The Boston Police Department's rental scam advisory and Boston.gov's apartment scams page are useful primers on what the patterns look like.
Here's what works in 2026:
Use a platform that verifies listings. snag verifies every apartment listing before it goes live: ID checked sublessor, photos matched to a real address, lease confirmed. Anything you book in app comes with payment protection. If the furnished apartment isn't what was advertised, you get your money back.
Filter by lease end date, not just price. Most Boston leases run September 1 to August 31. That means summer sublet inventory clusters into June, July, and August, and a lot of those listings come with an option to take over the full lease on September 1 if you decide to stay. If you're using a sublet as a trial run before committing, ask the sublessor whether the landlord would sign you onto a new lease at the end.
Move fast in the spring. Boston's summer sublet market peaks in late March and April, as students finalize internship plans and post their apartments for June. By mid May, the clean listings are gone. For September starts, August is when sublet inventory thins out and full year leases dominate. The Boston Globe and Boston.com have written plenty about the September 1 turnover and why the calendar is what it is.
Don't pay before you see it. Either in person, on a live video tour, or through a platform that holds your payment until move in. Anyone asking for a wire, Zelle, or Venmo before you've seen the apartment is running a scam. The FTC's rental listing scam guide walks through the standard patterns.
How to sublet your apartment
If you're the tenant going somewhere, for a summer internship, for a research stretch, for a relationship that just turned into a plane ticket, here's the path.
1. Read your lease. Find the sublet clause. Almost every Boston lease requires written landlord consent for any sublease or assignment. Some prohibit it outright. If yours is silent, you still want to ask, because Massachusetts treats the question contractually and ambiguous situations get expensive fast.
2. Send a written request to your landlord. Include the sublet term, the subtenant's name and contact info, the rent you'll be charging, and the reason for subletting. Massachusetts common law bars landlords from unreasonably withholding consent, but you want the request in writing either way so you have the paper trail.
3. Price it fairly. Massachusetts banned rent control in 1994, so market rate landlords don't restrict pricing on sublets. The expectation is roughly the rent you pay, sometimes with a small bump for furniture and utilities included. Trying to profit substantially on the spread is the fastest way to get a complaint filed and your lease scrutinized.
4. Screen your subtenant. ID, employment, references, school enrollment if relevant. On snag this is built in, so you're not running background checks on your own.
5. Get it in writing. A sublease agreement isn't optional. It should cover dates, rent, deposit, utilities, what happens with the security deposit at the end, and what happens if either side needs to break early. Massachusetts caps the total deposit collected (landlord plus original tenant) at one month's rent, so coordinate with your landlord before you ask the subtenant for anything.
You're still responsible to your landlord during the sublet. If your subtenant skips rent or breaks something, you owe it. That's why renter verification matters.
How to spot a sublet scam
The patterns are consistent.
- The price is too good. A $1,500 furnished 1BR in Back Bay does not exist in 2026. If you see one, it's bait.
- They won't let you see the apartment. "I'm studying abroad in Madrid, the keys are with my roommate's cousin, just Venmo the deposit." No.
- They want a wire, Zelle, Venmo, or crypto. Anything outside a platform's protected payment is a flag. No chargeback protection means no recovery if they disappear.
- The listing photos appear elsewhere. A reverse image search takes 30 seconds. Most Boston scam photos come straight off Zillow, Apartments.com, or stale realtor listings.
- The "landlord" is overseas. Real Boston landlords are in Boston, or have a property manager who is. Anyone "doing missionary work in Ghana" who needs you to send a deposit before you've seen the place is lying. The Boston Police rental scam alert has the actual case examples.
- The lease doesn't match the address. Cross check the owner on the City of Boston property database (the city's free real estate records portal). It's free and confirms who actually holds title.
A real verified sublet, booked through a trustworthy housing platform, costs maybe 5% more than a Craigslist roll of the dice. It's the cheapest insurance you'll buy this year.
