What to Look For in a Lease Before You Sign

Your lease is a document the landlord wrote. Read it like you wrote one for them.

Most lease guides tell you to "watch for" things without showing you what those things look like on the page. This one walks the document section by section, with real-looking clause language for each, and notes on state-specific rules where they matter. It's national, not New York or Wisconsin specific, and it covers ten clauses that decide most of the money you'll spend or save over a lease term.

This is how to read a lease, and what to look for in a lease, in one place.

TL;DR

• Ten lease clauses cover most of the financial risk: rent escalation, security deposit, term and renewal, sublet, early termination, repairs, late fees, joint-and-several liability, landlord entry, and hidden fees.
• State law puts ceilings on some of these. The lease can be silent or worse than the law, but it can't override the law.
• Severity tiers below: High risk, Medium risk, Low risk.
• Real clause language is reproduced for each section so you can pattern-match against your own document.

1. What rent will be in year 2

Medium risk

In a multi-year lease:

The monthly rent for the second year of the Term shall increase by
the greater of four percent (4%) or the year-over-year change in the
Consumer Price Index for All Urban Consumers (CPI-U) as published by
the U.S. Bureau of Labor Statistics.

What it means: "The greater of" is the move. You get the higher number, never the lower one. In a year of low inflation you pay 4 percent. In a year of high inflation you pay whatever CPI says.

Ask for "the lesser of," or a hard cap, or a flat percentage. In rent-regulated jurisdictions the increase is set by law and any clause exceeding it is unenforceable.

2. Whether you'll see your deposit again

High risk

A common version:

Tenant shall pay a security deposit equal to two (2) months' rent,
plus a non-refundable cleaning fee of $500, plus a non-refundable pet
deposit of $500. Landlord shall return the security deposit, less any
deductions, within sixty (60) days of move-out.

What it means: The number to watch is the total cash up front. The other number to watch is the return deadline.

State caps and timelines vary, and state law overrides the lease if the lease tries to take more or hold longer:

• California caps security deposits at one month's rent for unfurnished and furnished units (AB 12, effective July 2024, with a small landlord exception). Return within 21 days.
• Massachusetts caps deposits at one month's rent. Return within 30 days.
• New York caps at one month's rent. Return within 14 days.
• Texas has no statutory cap on the amount but requires return within 30 days of move-out.
• Florida has no statutory cap on the amount but requires return within 15 to 60 days depending on whether deductions are claimed.

If the lease says 90 days for return and your state says 30, the state wins. "Non-refundable" fees on top of a refundable deposit are restricted or banned in some states. Check the state-specific rule before paying.

3. When you can leave, and how

Medium risk

The renewal language:

This Lease shall automatically renew for successive twelve (12) month
terms at the then-prevailing market rent unless Tenant provides written
notice of intent to vacate not less than sixty (60) days prior to the
end of the then-current term.

What it means: Same shape as a service-contract auto-renewal. Long notice window, undefined renewal price, written-notice requirement. Same playbook applies. We covered the broader pattern in the auto-renewal clause guide.

Ask for a 30-day notice window and a defined cap on the renewal increase. If the lease prefers month-to-month after the initial term, that's usually the tenant-friendlier option.

4. Can someone else take over your lease

Medium risk

The restrictive version:

Tenant shall not sublet the Premises or assign this Lease without the
prior written consent of Landlord, which consent may be withheld in
Landlord's sole and absolute discretion.

What it means: "Sole and absolute discretion" means they can say no for any reason, including no reason. If you take a job in another city six months in, this clause decides whether you can recoup any of your remaining rent.

Ask for "consent shall not be unreasonably withheld" instead. In some states, including New York, the law already requires reasonable consent for subletting in buildings of a certain size, and "sole and absolute discretion" is unenforceable against that statute.

5. What it costs to break the lease early

High risk

A standard break-fee clause:

If Tenant terminates this Lease prior to the end of the Term, Tenant
shall pay an early termination fee equal to two (2) months' rent in
addition to all rent due through the end of the month in which the
Premises are vacated. Landlord shall use reasonable efforts to re-rent
the Premises.

What it means: A flat fee plus the obligation to keep paying until the unit is re-rented. The "reasonable efforts to re-rent" line is doing real work; in most states, the landlord has a duty to mitigate damages, meaning they can't just sit on the empty unit and bill you.

States vary. California, Texas, New York, and most others require landlord mitigation. A few do not. Active-duty military have separate protections under the federal Servicemembers Civil Relief Act, including a right to terminate on PCS orders. Domestic violence survivors have early-termination rights in many states.

6. Who fixes what, and who pays

Medium risk

The clause that shifts the burden:

Tenant shall be responsible for all repairs and maintenance of the
Premises and its appliances, including but not limited to plumbing,
heating, and electrical systems, regardless of cause.

What it means: "Regardless of cause" is the trap. If the water heater dies of old age, this clause says you pay. The implied warranty of habitability in nearly every state makes parts of this unenforceable, but the lease still tries.

Push back to limit tenant responsibility to damage caused by tenant negligence, with the landlord covering normal wear and structural systems. State warranty-of-habitability laws cover the basics regardless of what the lease says.

7. How fast late fees pile up

Medium risk

A typical clause:

Rent is due on the 1st day of each month. If rent is not received by
the 5th, Tenant shall pay a late fee of $100 plus $25 per day until
paid in full.

What it means: The math compounds fast. State caps usually limit late fees to 5 to 10 percent of monthly rent or a flat reasonable amount. California caps at "actual damages" plus a reasonable amount. Massachusetts requires a 30-day grace period before any late fee is allowed.

If the clause exceeds the state cap, the state cap controls. Worth knowing before you sign and especially before you pay.

8. Why one roommate can torch you all

High risk

In a roommate lease:

Each Tenant signing this Lease shall be jointly and severally liable
for all obligations of Tenant under this Lease, including the full
amount of Rent.

What it means: If your roommate stops paying, you owe their share. If they trash the place, you owe the damages. The landlord can sue any one of you for the full amount and let you sort it out among yourselves.

You usually can't get this clause out of a roommate lease. The protections are on the front end: pick roommates carefully, sign a written cohabitation agreement that allocates rent and damages between you, and ask for individual leases per bedroom if the building offers them.

9. When your landlord can walk in

Low risk

The standard version:

Landlord may enter the Premises at any reasonable time for the purposes
of inspection, repair, or showing the Premises to prospective tenants
or buyers, with twenty-four (24) hours' notice except in cases of
emergency.

What it means: The notice period and the definition of "reasonable time" matter. Most states require 24 to 48 hours notice for non-emergency entry. Some require written notice; some allow phone or text.

If the lease says no notice required, the state law overrides it in most jurisdictions. Worth knowing your state's specific rule.

10. The fees you didn't see in the rent number

Medium risk

In the addendum:

Tenant shall pay a Move-In Fee of $300, an Amenity Fee of $50 per
month, a Trash Fee of $25 per month, a Pest Control Fee of $20 per
month, and any other fees imposed by Landlord upon thirty (30) days'
notice.

What it means: The advertised rent is not the rent. Add these up over a 12-month term and you have a real number for the cost of the apartment.

A few states and cities have moved against "junk fees" in residential leases. California, Colorado, and several cities require all mandatory fees to be disclosed up front in rental advertising. Federal action under the FTC's junk-fee rule is in motion. The lease can be aggressive here, but your job before signing is to add up every fee and compare to other units on a total-cost basis.

One read-through saves the security deposit

A lease is editable. Until you sign, every clause is a draft. Mark it up, send it back, ask for changes. Some landlords will say no to everything. Some will say yes to most things, especially in markets with vacancies. Most will negotiate one or two terms in exchange for a longer lease or a faster signing.

If you spotted clauses on this list that aren't in the contract red flags guide, it's worth reading that one too for the patterns that show up across all consumer contracts.

Redline reads leases in plain English. Photograph the document, paste the text, or upload the PDF, and it flags the renewal clause, the security-deposit terms, the joint-and-several liability, and the hidden fees, with a plain-English explanation of each. One scan, one dollar. Available on iOS and Android.