How many days a guest can stay at an apartment depends on your lease, but most standard leases set the limit somewhere between 10 and 14 consecutive nights, and many also cap total guest nights at 14 within any six-month window. Cross that threshold without your landlord’s approval, and your visitor can be reclassified as an unauthorized occupant, which puts your own lease at risk.
What Your Lease Probably Says
Your lease is the first place to look. Almost every standard apartment lease has a “guest policy” or “use of premises” clause with two kinds of limits: consecutive nights and total nights over a longer stretch. A common version allows 14 consecutive nights and no more than 14 total nights in any six-month period. Some leases are stricter, capping consecutive stays at seven or ten days.
If your lease names a number, that number controls. Exceeding it, even by a day or two, gives the landlord grounds to issue a violation notice. Read the clause closely. Some leases require you to notify the landlord of any overnight guest; others only care once a stay crosses a specific threshold.
When Your Lease Doesn’t Set a Limit
Not every lease addresses guests. When yours doesn’t, the answer shifts to state law. Several states have set their own default thresholds for when a guest becomes a tenant, ranging from as few as seven consecutive nights to 30 days. Some states use a combined test: 14 or more days in a six-month period, or seven consecutive nights, whichever comes first.
Local housing codes also set maximum occupancy standards based on bedroom count and square footage. These rules exist to prevent overcrowding rather than to define guests, but they matter if a long-term visitor pushes the unit over its legal occupancy limit, since that gives the landlord a separate reason to act.
Where neither the lease nor state law sets a clear guest limit, courts stop counting nights and start looking at behavior.
When a Guest Becomes an Unauthorized Tenant
A visitor’s legal status can flip based on what they do, not just how long they sleep over. Once a guest starts acting like a resident, landlords and courts can treat them as one, even if the calendar limit hasn’t technically been reached.
The signs that typically matter:
- Paying rent or splitting utilities. Any exchange of money or services toward housing costs can create an implied tenancy, even without a written agreement.
- Receiving mail at the address. Packages or official correspondence delivered to the unit signal the person considers it their home.
- Moving in belongings. Furniture, a wardrobe of clothing, or other substantial possessions go beyond what a short-term visitor brings.
- Having their own key. Independent access to the unit points to occupancy rather than a visit.
- No other residence. If the person has given up prior housing or can’t point to a primary address elsewhere, the case for residency gets stronger.
Landlords watch for these signals because an unauthorized occupant who establishes residency picks up legal protections. That turns what could have been a simple guest-clause enforcement into a much bigger problem.
Why a Stealth Tenant Is a Serious Problem
Once someone is considered a tenant under the law, they can’t be removed by a request or a police call. Formal eviction is required, the same process a landlord uses to remove a leaseholder. A person who claims to live in the unit and has evidence to back it up generally cannot be locked out or forced to leave without a court order.
This applies even when the person never signed anything. Oral agreements and implied leases are recognized in most states. If someone has been paying part of the rent, splitting bills, or exchanging services for housing, a court may find that a tenancy exists. A landlord or roommate who removes that person without going through the courts can face liability for wrongful eviction, including the displaced person’s living costs, lost property, and in some cases additional damages.
For you as the original tenant, this creates a squeeze. You may be in breach of your own lease for the unauthorized occupant while being unable to remove them without your landlord’s help or a court proceeding. The right time to deal with a lengthening guest stay is well before it gets to this point.
Stricter Rules for Public Housing and Section 8
If you live in public housing or use a Housing Choice Voucher (Section 8), the guest rules are tighter and the consequences bigger. Federal regulations require tenants to house only individuals authorized under the lease, and housing authorities must approve all household members.1eCFR. 24 CFR Part 960 – Admission to, and Occupancy of, Public Housing Federal rules don’t set a single nationwide day limit, but HUD guidance commonly treats 14 consecutive days or 30 total days in a calendar year as the point where a guest’s stay becomes an issue.
An unreported occupant can change your household income calculation, which sets your rent. If the housing authority finds out someone has been living in your unit without being reported, you could face a claim for back rent at a higher rate, termination of your voucher or lease, and in serious cases, fraud allegations. In subsidized housing, reporting an extended-stay guest before they arrive is not optional.
What Happens If You Break the Guest Rule
Landlords generally don’t jump to eviction. The process starts with a written notice, often called a “notice to cure or quit,” identifying the specific lease violation and giving you a set number of days to fix it. The window varies by state but usually runs three to ten days. For a guest overstay, “curing” means the guest leaves.
If the guest is still there when that window closes, the landlord can escalate with a second notice, sometimes called a “notice to quit” or “notice to vacate,” demanding that you leave the property. At that point, the landlord is treating the violation as a material breach.
If you don’t vacate, the next step is an eviction lawsuit. The court will look at whether the lease was actually violated and whether the landlord followed proper procedures. An eviction judgment stays on tenant screening records for about seven years and makes future rentals much harder to get. A friend crashing on your couch for “just a few weeks” can turn into a housing record that follows you for a long time.
How to Add a Long-Term Guest to the Lease
If someone will be staying past the guest limit, the right move is to ask your landlord to add them as an authorized occupant or co-tenant before the deadline hits. Start with a written request explaining who the person is, why they’ll be staying, and for how long. Handling it proactively signals good faith, and landlords respond to that better than to a violation they had to discover.
If the landlord agrees, the person will almost certainly need to complete a rental application and go through the same screening any new tenant would: credit check, background check, and income verification. Application fees commonly run around $50, though some states cap what landlords can charge. There is no federal limit.
Once the person passes screening, the landlord will typically prepare a lease addendum adding their name and setting out their obligations. Some landlords prefer to rewrite the lease entirely. Either way, the new occupant becomes jointly responsible under the lease. If the landlord denies the request, you have your answer: the guest needs other arrangements before the stay limit runs out. Push past that point without approval and the timeline to protect your housing gets very short.