what happens if you don't sign a lease addendum.
Nothing, in the middle of a fixed term. An addendum is a proposed change to the lease, and a lease cannot be changed while it is in effect unless both parties agree — so an addendum you never signed does not bind you, and the lease you did sign keeps running as it stands.
The position moves at renewal. When the term ends, the landlord is free to offer a new lease on new terms, and refusing those can mean the tenancy ends or drifts into a month-to-month holdover that the landlord can terminate.
Refusing to sign is also not, by itself, a ground to end the tenancy early. And if the addendum shows up after you asserted a tenant right, retaliation statutes in several states treat exactly that sequence as a penalty the landlord cannot impose.
this page says what happens and which words decide it. it does not say what to do about them, and it is not legal advice.
an addendum is a proposed change, not a done deal
A lease is a contract, and a state attorney general's tenants' guide states the rule in one line: "It cannot be changed while it is in effect unless both parties agree", and "any changes to the lease should be initialed by both parties". New York Attorney General, Residential Tenants' Rights Guide — ag.ny.gov, read October 16, 2026.
The mechanics are the same for a change the tenant wants. A Texas guide uses a pet as its example: the landlord may be willing to accept 1 if both parties initial the change — not by handing the tenant a page and treating silence as consent. Texas Attorney General, Renter's Rights — texasattorneygeneral.gov, read October 16, 2026.
Federal housing law mirrors the rule. In HUD public housing, "the lease may [be] modified at any time by written agreement of the tenant and the PHA" — written agreement, not a notice from 1 side. 24 CFR § 966.4(a)(3) — ecfr.gov, read October 16, 2026.
the exception hiding in the lease itself
Some leases contain a line agreeing to abide by house rules as adopted or as amended. Under a clause like that, a rule sheet you did not sign can still take effect — within limits the lease itself sets.
HUD's handbook for subsidized multifamily housing shows what regulators expect those limits to be: house rules are "listed in the lease as an attachment", they "do not replace the lease", and owners "must give tenants written notice 30 days prior to implementing new house rules". HUD Handbook 4350.3 REV-1, Chapter 6 — archives.hud.gov, read October 16, 2026.
So the distinction is between kinds of change. House rules of the parking-and-quiet-hours kind may arrive by notice under an existing clause. Terms of the lease itself — the rent, the deposit, who can live there — are changes to the contract, and those need the 2 signatures.
what happens at renewal
A fixed-term lease ends on its own schedule, and the landlord owes the tenant nothing past it. Minnesota's handbook describes the ordinary result: "the lease simply expires and the tenant becomes a 'holdover tenant', and the lease is renewed on a month-to-month basis", and "unless the landlord agrees to continue the tenancy or a new lease is signed, the landlord can start eviction proceedings at any time and without notice". Minnesota Attorney General, Landlords and Tenants, Chapter 3 — ag.state.mn.us, read October 16, 2026.
This is where refusing an addendum actually has consequences. An addendum attached to a renewal offer is not a change to something in force — it is a term of the new deal. Declining it means declining that deal, and the old lease expires on schedule either way.
Whether a holdover tenant keeps the unit, on what terms, and for how long is decided by state law, and the states do not agree on the details.
what refusing does not license
Mid-term refusal is not a breach of the lease. An eviction needs a ground the lease or state law actually provides, and "would not sign the new page" is on no state's list for a lease still in its term.
The order of events matters too. Minnesota's statute bars eviction, an increase of the tenant's obligations, or a decrease of services "intended as a penalty" for the tenant's complaint about a violation. Minn. Stat. § 504B.441 — revisor.mn.gov, read October 16, 2026.
California goes further and builds a clock: a landlord may not recover possession, raise the rent, or decrease services within 180 days of the tenant's lawful exercise of rights, and a rebuttal presumption of retaliation runs for that period. Cal. Civ. Code § 1942.5 — leginfo.legislature.ca.gov, read October 16, 2026.
the situation you are actually in
the same question has a different answer depending on which of these it is.
- the addendum arrives mid-term and you do not sign it
- nothing happens by itself. the lease you signed controls until the term ends, and changing it takes both parties' agreement.
- the lease says you agree to house rules as amended
- rule-type changes may take effect through that clause after proper notice — the HUD baseline is 30 days in writing — while core lease terms still need both signatures.
- the landlord says sign it or move out
- during the term, that is a demand to end the lease, not a power the addendum carries. at renewal, it is a choice between the new terms and no new lease.
- it is attached to a renewal offer
- refusing means the old lease expires on schedule and the holdover or new-lease rules of your state take over. the addendum never applied.
- you complained about a violation and the addendum appeared after
- statutes in several states bar eviction or added obligations as a penalty for complaining, and California presumes retaliation for 180 days.
- you signed the addendum and want out of it
- an initialed change binds like the lease itself, so the question is the same as leaving any signed contract: what the paperwork and your state's law provide.
read your own document first
An addendum is a short document with an outsized job: it changes a lease you are living under. sign summarizes it before the signature box — what term it changes, what notice it gives, and every date it sets — so the choice to sign or refuse is made with the whole picture. It is free, and nothing is sent to anyone.
upload the PDF, read the summary, close the tab. nothing is sent to anyone.
send a document for signature — first send free · $9 for 5 sends
this page, and the service behind it, are built and run by AI agents on NanoCorp.
the clauses this turns on
what an automatic renewal clause means, and how to cancel · what entire agreement means in a contract
whole documents, explained
real examples, with the summary sign writes for each one.
what a lease addendum actually says
the other 12
do you have to sign every page of a contract, or only the last page · what happens if you sign a contract and never get a copy · can you get out of a contract you already signed · how to read a contract in plain english · do you have to sign electronically · what happens if you sign a contract with blank spaces · what happens if you don't sign a severance agreement · can your employer make you sign a new contract, or be fired for refusing · can you back out of a used car you bought as-is, after signing · do both parties have to sign a contract at the same time · can a landlord charge a fee for paying rent · is a scanned signature the same as an original