Illinois: Residential Lease Execution Formalities

Requirements one by one

Writing threshold

Illinois has two overlapping one-year rules. Under 740 ILCS 80/2, a contract
for an interest in land “for a longer term than one year” cannot be enforced by
an action unless a signed writing or memorandum exists. Under 740 ILCS 80/1,
the same is true when the agreement cannot be performed within one year after it
is made.

The second rule matters when the start date is delayed. A term of one year can
still run beyond one year from the agreement date and therefore fall within
§ 1 even though the duration alone does not exceed § 2's one-year line.

Required signatures and authority

Both statute-of-frauds sections use the “party to be charged” rule: the writing
is signed by the person against whom enforcement is sought or by an authorized
signer. Section 2 adds a form requirement for the land-interest agent's
authority. That authority must itself be written and signed by the party.

The Conveyances Act confirms what a signed written lease accomplishes. Under
765 ILCS 5/1, a written conveyance signed by the maker is sufficient to vest
the specified estate in the lessee, subject to an older or better right held by
someone who was not a party.

Witness, acknowledgment, and notary

The execution statutes require a signed writing for a covered lease but do not
require witnesses, an acknowledgment, or notarization for validity between the
parties. Illinois also states an unusual recording rule in 765 ILCS 5/31: once a
real-estate instrument is filed, it gives notice to later purchasers and
creditors “though not acknowledged or proven according to law.”

An unacknowledged instrument carries an evidence limitation. Section 31 says it
cannot be read as evidence unless its execution is proved under the applicable
evidence rules. Acknowledgment therefore has practical evidentiary value even
though it is not the basic lease-validity requirement.

Electronic execution

Illinois's Uniform Electronic Transactions Act applies to transaction records
and signatures outside its listed exceptions. Under 815 ILCS 333/5, it applies
only when both parties agree to transact electronically. Section 7 then makes an
electronic record and signature satisfy legal writing and signature requirements.

Electronic delivery must remain usable when another law requires written
information to be delivered. Section 8 requires a record the recipient can
retain at receipt. If the sender blocks printing or storage, the record is not
enforceable against the recipient.

Renewal, modification, and term form

Illinois has no separate statewide form statute for an ordinary residential
lease renewal or modification. The two statute-of-frauds tests apply to the deal
as changed: a renewal, extension, or modification needs the covered signed
writing if it creates a land-interest term longer than one year or an agreement
that cannot be performed within one year after making.

That statutory minimum is separate from a lease clause requiring every change
to be written and signed. The parties may choose a stricter contract form than
the statute requires for a shorter arrangement.

Recording and third-party effect

Under 765 ILCS 5/28, an instrument relating to or affecting real-estate title is
recorded in the county where the property sits, and a clause prohibiting its
recording is void. Section 30 then supplies the priority consequence: until the
instrument is filed, it is void against creditors and later purchasers without
notice.

Section 31 makes filing itself notice to later purchasers and creditors even
when the lease was not acknowledged. These provisions concern third-party
effect. They do not state that recording is what creates the lease between its
original parties.

Effect of noncompliance

Sections 1 and 2 of the Statute of Frauds say “no action shall be brought” on a
covered unwritten or unsigned agreement. That is an enforcement consequence,
not statutory language declaring every oral short-term tenancy nonexistent.

Section 30 uses a different and narrower result for nonrecording. Until filing,
the written lease is void as to creditors and later purchasers without notice;
the statute does not say it is void between landlord and tenant.

What trips people up

Exactly one year and one year from making are different tests. A one-year
term is not “longer than one year” under § 2, but a delayed-start agreement may
still be impossible to finish within one year after making and fall under § 1.

The statewide copy rule found in the code is for mobile-home parks. The
copy-on-request language in 765 ILCS 745/8 applies only to the mobile homes and
mobile-home lots described in § 1. It is not a general deadline to deliver an
executed apartment or house lease.

Common questions

Does a one-year lease always stay outside the writing rule? No. Duration
alone is not longer than one year, but 740 ILCS 80/1 separately asks whether the
agreement can be completed within one year after the date it was made.

Must both landlord and tenant sign every covered Illinois lease? The statute
requires the signature of the party against whom enforcement is sought. A
two-sided lease normally uses both signatures, but the statutory phrase is
“party to be charged,” not an across-the-board command that every claim requires
both signatures on one page.

Can an unacknowledged lease give record notice? Yes. Under 765 ILCS 5/31,
filing gives notice even without acknowledgment, although the instrument's
execution must be separately proved before it can be read in evidence.

Statutes and sources

• 740 ILCS 80/1–2 — one-year-performance and longer-than-one-year
  land-interest rules, party-to-be-charged signature, and written agent authority.
  https://www.ilga.gov/documents/legislation/ilcs/documents/074000800K2.htm
  (accessed 2026-07-29)
• 765 ILCS 5/1, 28, 30–31 — sufficiency of a signed written lease, county
  recording, creditor and purchaser priority, and notice without acknowledgment.
  https://www.ilga.gov/documents/legislation/ilcs/documents/076500050K30.htm
  (accessed 2026-07-29)
• 815 ILCS 333/3, 5, 7–8 — electronic-transaction scope, party agreement,
  electronic writing and signature, and retainable electronic delivery.
  https://www.ilga.gov/Legislation/ILCS/Articles?ActID=4165&ChapterID=67&Print=True
  (accessed 2026-07-29)
• 765 ILCS 745/1, 8 — excluded mobile-home-park scope and its special
  lease-copy-on-request rule.
  https://www.ilga.gov/documents/legislation/ilcs/documents/076507450K8.htm
  (accessed 2026-07-29)