Illinois · Amendment · Free to generate and download
Illinois Lease Amendment
Change rent, term, or occupants without rewriting the Illinois lease. Unchanged deposit-return and habitability duties stay in force.
- All parties on the original lease should sign.
- A month-to-month change still needs proper notice.
- Do not use an amendment to skip 765 ILCS 710/1.
Open a filled sample with every optional field and checkbox completed.
Related Illinois documents
- Illinois Residential Lease Agreement. A fixed-term residential rental contract built around the property’s state rules.
- Illinois Notice of Rent Increase. Written notice that rent will change on a stated date. It is not an eviction and not a substitute for a signed amendment or renewal.
- Illinois Guarantor / Co-Signer Addendum. An add-on to an existing lease in which another person guarantees the tenant’s rent and other lease duties. It does not make the guarantor a tenant.
- Illinois Pet Addendum. An add-on to an existing lease that names the animals, pet deposit or rent, and care rules. Assistance animals are not pets.
- Illinois Lease Renewal Offer. A written offer to renew an existing residential lease for a new term and rent.
Frequently asked questions
Plain-language answers about Illinois amendment papers. LeaseGen.io is not a law firm. Confirm current statutes before anyone signs.
- What is a lease amendment?
- A lease amendment is a short writing that changes specific terms of an existing lease — rent, end date, occupants, pets, or parking — without rewriting the whole contract.
- Do both parties have to sign an amendment in Illinois?
- Yes. An unsigned draft does not change the lease. Keep the original lease and attach signed amendments so the full agreement is clear later.
- Can an amendment waive deposit-return rules?
- No. Illinois does not set a statewide maximum security deposit. Unused deposit plus an itemized list is generally due within 45 days (765 ILCS 710/1). Landlords with 25 or more units generally owe interest (765 ILCS 715). Chicago’s RLTO adds a 1.5× cap and a different clock. An amendment cannot strip away mandatory Illinois landlord-tenant protections.