Illinois Security Deposit Demand Letters

Get your deposit back, plus up to 2× in penalties.

A formal demand letter built on 765 ILCS 710 / 765 ILCS 715. A few plain-English questions, ready today.

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Jordan A. Reyes118 Chestnut Street, Apt 3
Chicago, IL
August 21, 2026

VIA CERTIFIED MAIL · NO. 7020 3160 0002 4287 9014

RE: Demand for return of security deposit under 765 ILCS 710 / 765 ILCS 715

PAGE 1 OF 2

Sample letter. Details are fictional.

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I moved out weeks ago and my landlord has gone quiet.

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Your options

The most expensive option is doing nothing.

Here are the four paths when an Illinois landlord is holding your deposit.

Wait it out

Costs your deposit. No statute, no deadline, no proof.

Ready: never.

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Ready when you get to it.

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Ready in days to weeks.

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Your rights under Illinois law

30 days

Deadline to return your deposit

Penalty for bad faith withholding

10 days

Typical landlord reply time

Set by 765 ILCS 710 / 765 ILCS 715

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Recent letters

Sample letters we sent this month.

Each one was built from a tenant's answers and Illinois law. Names, addresses, and signatures are redacted. Tap a letter to read it in full.

Via certified mail · return receipt requested

Re: Demand for Return of Security Deposit at 1428 Camino Verde, Apt 3B, Riverside,

Dear ,

I am writing regarding the security deposit of $2,400 paid in connection with my tenancy at 1428 Camino Verde, Apt 3B, Riverside, 00000. I moved out on June 25, 2026. As of the date of this letter, you have neither returned the deposit nor provided the written itemised statement required by 765 ILCS 710 / 765 ILCS 715.

My forwarding address was provided to you in writing on June 25, 2026. Your statutory deadline to return the deposit or provide an itemised statement ran from that date.

Under 765 ILCS 710 / 765 ILCS 715, you had thirty (30) days from my move-out date to return the deposit or provide a written itemised statement of any deductions. That deadline has now passed.

Under 765 ILCS 710/1, a landlord who fails to provide an itemised statement in bad faith and fails to return the deposit within the statutory window is liable for twice the deposit, plus court costs and reasonable attorney's fees.

Illinois law provides for interest on security deposits at the statutory passbook rate for buildings with 25 or more units, where the deposit has been held at least 6 months. If that applies to this tenancy, the interest is owed in addition to the sums above.

• Court costs + reasonable attorney fees recoverable (765 ILCS 710/1)

I demand the return of the full deposit of $2,400 within thirty (30) days of receipt of this letter, by check made payable to the undersigned and mailed to the address shown above.

Failure to comply will result in the filing of a small-claims action in Illinois under 765 ILCS 710 / 765 ILCS 715. The action will seek the deposit itself, plus any damages, penalties, costs, and attorney fees recoverable under 765 ILCS 710 / 765 ILCS 715.

---

Sincerely,

Jordan A. Reyes

No response after move-out

$2,400 demanded

Via certified mail · return receipt requested

Re: Demand for Return of Security Deposit at 87 Larkspur Lane, Unit 12, Fairview,

Dear ,

I am writing regarding the security deposit of $2,000 paid in connection with my tenancy at 87 Larkspur Lane, Unit 12, Fairview, 00000. I moved out on July 10, 2026. You subsequently delivered an itemised statement of deductions (the precise date of the statement is not in my records). The burden is on you to justify each deduction with a written itemisation and documentation of damage beyond ordinary wear; I dispute these deductions in full and demand the entire amount back.

Each deduction below is your burden to justify. Unless you can substantiate an item with receipts, photographs, or other documentary evidence within the period set by 765 ILCS 710 / 765 ILCS 715, the full amount must be returned to me.

Receipts alone do not establish a permissible deduction. Even where you produce a receipt for an expenditure, the existence of a receipt does not, on its own, establish the right to withhold the corresponding amount from my deposit. Under 765 ILCS 710 / 765 ILCS 715, a permissible deduction must (a) be attributable to damage caused by the tenant that exceeds ordinary wear and tear, (b) reflect the depreciated value of any item replaced rather than the full replacement cost, and (c) be a written itemisation with receipts for charges, delivered within the statutory window. A receipt evidences only that you spent the money. It does not address tenant causation, depreciation, or the statutory itemisation requirements.

Illinois law provides for interest on security deposits at the statutory passbook rate for buildings with 25 or more units, where the deposit has been held at least 6 months. If that applies to this tenancy, the interest is owed in addition to the sums above.

Under 765 ILCS 710 / 765 ILCS 715, deductions from a security deposit must be itemised in writing and substantiated by receipts or comparable documentation. Under 765 ILCS 710/1, a landlord who fails to provide an itemised statement in bad faith and fails to return the deposit within the statutory window is liable for twice the deposit, plus court costs and reasonable attorney's fees.

• Court costs + reasonable attorney fees recoverable (765 ILCS 710/1)

I therefore demand return of the full $1,850 you withheld within thirty (30) days of receipt of this letter.

If you maintain that any portion of the disputed amount is properly withheld, your response must include, for each contested line item: (i) the specific damage attributable to my tenancy beyond normal wear and tear, (ii) the depreciated value calculation supporting the charged amount, (iii) the date and method by which the itemisation was first delivered to me. Receipts alone do not satisfy these requirements.

Failure to return the full amount, or to provide the substantive response described above, within the thirty (30)-day window will be treated as confirmation of bad-faith retention and will prompt the filing of a small-claims action in Illinois under 765 ILCS 710 / 765 ILCS 715, seeking the full amount plus any damages, penalties, costs, and attorney fees recoverable under 765 ILCS 710 / 765 ILCS 715.

Please direct all responses in writing to the address above.

---

Sincerely,

Priya Raman

Wear and tear billed as damage

$2,000 demanded

Via certified mail · return receipt requested

Re: Demand for Return of Security Deposit at 2015 Sherwood Avenue, Lakeside, 0000

Dear ,

I am writing regarding the security deposit of $3,050 paid in connection with my tenancy at 2015 Sherwood Avenue, Lakeside, 00000. I moved out on July 2, 2026. You subsequently delivered an itemised statement of deductions (the precise date of the statement is not in my records). The burden is on you to justify each deduction with a written itemisation and documentation of damage beyond ordinary wear; I dispute these deductions in full and demand the entire amount back.

Each deduction below is your burden to justify. Unless you can substantiate an item with receipts, photographs, or other documentary evidence within the period set by 765 ILCS 710 / 765 ILCS 715, the full amount must be returned to me.

Receipts alone do not establish a permissible deduction. Even where you produce a receipt for an expenditure, the existence of a receipt does not, on its own, establish the right to withhold the corresponding amount from my deposit. Under 765 ILCS 710 / 765 ILCS 715, a permissible deduction must (a) be attributable to damage caused by the tenant that exceeds ordinary wear and tear, (b) reflect the depreciated value of any item replaced rather than the full replacement cost, and (c) be a written itemisation with receipts for charges, delivered within the statutory window. A receipt evidences only that you spent the money. It does not address tenant causation, depreciation, or the statutory itemisation requirements.

Illinois law provides for interest on security deposits at the statutory passbook rate for buildings with 25 or more units, where the deposit has been held at least 6 months. If that applies to this tenancy, the interest is owed in addition to the sums above.

Under 765 ILCS 710 / 765 ILCS 715, deductions from a security deposit must be itemised in writing and substantiated by receipts or comparable documentation. Under 765 ILCS 710/1, a landlord who fails to provide an itemised statement in bad faith and fails to return the deposit within the statutory window is liable for twice the deposit, plus court costs and reasonable attorney's fees.

• Court costs + reasonable attorney fees recoverable (765 ILCS 710/1)

I therefore demand return of the full $2,150 you withheld within thirty (30) days of receipt of this letter.

If you maintain that any portion of the disputed amount is properly withheld, your response must include, for each contested line item: (i) the specific damage attributable to my tenancy beyond normal wear and tear, (ii) the depreciated value calculation supporting the charged amount, (iii) the date and method by which the itemisation was first delivered to me. Receipts alone do not satisfy these requirements.

Failure to return the full amount, or to provide the substantive response described above, within the thirty (30)-day window will be treated as confirmation of bad-faith retention and will prompt the filing of a small-claims action in Illinois under 765 ILCS 710 / 765 ILCS 715, seeking the full amount plus any damages, penalties, costs, and attorney fees recoverable under 765 ILCS 710 / 765 ILCS 715.

Please direct all responses in writing to the address above.

---

Sincerely,

Devon Okafor

Deductions with no receipts

$3,050 demanded

Via certified mail · return receipt requested

Re: Demand for Return of Security Deposit at 640 Juniper Court, Apt 9, Ashfield,

Dear ,

I am writing regarding the security deposit of $1,800 paid in connection with my tenancy at 640 Juniper Court, Apt 9, Ashfield, 00000. I moved out on July 16, 2026. You subsequently delivered an itemised statement of deductions (the precise date of the statement is not in my records). The burden is on you to justify each deduction with a written itemisation and documentation of damage beyond ordinary wear; I dispute these deductions in full and demand the entire amount back.

Each deduction below is your burden to justify. Unless you can substantiate an item with receipts, photographs, or other documentary evidence within the period set by 765 ILCS 710 / 765 ILCS 715, the full amount must be returned to me.

Receipts alone do not establish a permissible deduction. Even where you produce a receipt for an expenditure, the existence of a receipt does not, on its own, establish the right to withhold the corresponding amount from my deposit. Under 765 ILCS 710 / 765 ILCS 715, a permissible deduction must (a) be attributable to damage caused by the tenant that exceeds ordinary wear and tear, (b) reflect the depreciated value of any item replaced rather than the full replacement cost, and (c) be a written itemisation with receipts for charges, delivered within the statutory window. A receipt evidences only that you spent the money. It does not address tenant causation, depreciation, or the statutory itemisation requirements.

Illinois law provides for interest on security deposits at the statutory passbook rate for buildings with 25 or more units, where the deposit has been held at least 6 months. If that applies to this tenancy, the interest is owed in addition to the sums above.

Under 765 ILCS 710 / 765 ILCS 715, deductions from a security deposit must be itemised in writing and substantiated by receipts or comparable documentation. Under 765 ILCS 710/1, a landlord who fails to provide an itemised statement in bad faith and fails to return the deposit within the statutory window is liable for twice the deposit, plus court costs and reasonable attorney's fees.

• Court costs + reasonable attorney fees recoverable (765 ILCS 710/1)

I therefore demand return of the full $1,200 you withheld within thirty (30) days of receipt of this letter.

If you maintain that any portion of the disputed amount is properly withheld, your response must include, for each contested line item: (i) the specific damage attributable to my tenancy beyond normal wear and tear, (ii) the depreciated value calculation supporting the charged amount, (iii) the date and method by which the itemisation was first delivered to me. Receipts alone do not satisfy these requirements.

Failure to return the full amount, or to provide the substantive response described above, within the thirty (30)-day window will be treated as confirmation of bad-faith retention and will prompt the filing of a small-claims action in Illinois under 765 ILCS 710 / 765 ILCS 715, seeking the full amount plus any damages, penalties, costs, and attorney fees recoverable under 765 ILCS 710 / 765 ILCS 715.

Please direct all responses in writing to the address above.

---

Sincerely,

Hannah Bergström

Cleaning fee, unit left spotless

$1,800 demanded

Via certified mail · return receipt requested

Re: Demand for Return of Security Deposit at 318 Third Street, Apt 5C, Northgate,

Dear ,

I am writing regarding the security deposit of $2,750 paid in connection with my tenancy at 318 Third Street, Apt 5C, Northgate, 00000. I moved out on July 22, 2026. As of the date of this letter, you have neither returned the deposit nor provided the written itemised statement required by 765 ILCS 710 / 765 ILCS 715.

My forwarding address was provided to you in writing on July 22, 2026. Your statutory deadline to return the deposit or provide an itemised statement ran from that date.

Under 765 ILCS 710 / 765 ILCS 715, you had thirty (30) days from my move-out date to return the deposit or provide a written itemised statement of any deductions. That deadline has now passed.

Under 765 ILCS 710/1, a landlord who fails to provide an itemised statement in bad faith and fails to return the deposit within the statutory window is liable for twice the deposit, plus court costs and reasonable attorney's fees.

Illinois law provides for interest on security deposits at the statutory passbook rate for buildings with 25 or more units, where the deposit has been held at least 6 months. If that applies to this tenancy, the interest is owed in addition to the sums above.

• Court costs + reasonable attorney fees recoverable (765 ILCS 710/1)

I demand the return of the full deposit of $2,750 within thirty (30) days of receipt of this letter, by check made payable to the undersigned and mailed to the address shown above.

Failure to comply will result in the filing of a small-claims action in Illinois under 765 ILCS 710 / 765 ILCS 715. The action will seek the deposit itself, plus any damages, penalties, costs, and attorney fees recoverable under 765 ILCS 710 / 765 ILCS 715.

---

Sincerely,

Marcus Vail

Deposit held after lease break

$2,750 demanded

Via certified mail · return receipt requested

Re: Demand for Return of Security Deposit at 92 Willow Bend, Rosedale, 00000

Dear ,

I am writing regarding the security deposit of $950 paid in connection with my tenancy at 92 Willow Bend, Rosedale, 00000. I moved out on July 28, 2026. You subsequently delivered an itemised statement of deductions (the precise date of the statement is not in my records). The burden is on you to justify each deduction with a written itemisation and documentation of damage beyond ordinary wear; I dispute these deductions in full and demand the entire amount back.

Each deduction below is your burden to justify. Unless you can substantiate an item with receipts, photographs, or other documentary evidence within the period set by 765 ILCS 710 / 765 ILCS 715, the full amount must be returned to me.

Receipts alone do not establish a permissible deduction. Even where you produce a receipt for an expenditure, the existence of a receipt does not, on its own, establish the right to withhold the corresponding amount from my deposit. Under 765 ILCS 710 / 765 ILCS 715, a permissible deduction must (a) be attributable to damage caused by the tenant that exceeds ordinary wear and tear, (b) reflect the depreciated value of any item replaced rather than the full replacement cost, and (c) be a written itemisation with receipts for charges, delivered within the statutory window. A receipt evidences only that you spent the money. It does not address tenant causation, depreciation, or the statutory itemisation requirements.

Illinois law provides for interest on security deposits at the statutory passbook rate for buildings with 25 or more units, where the deposit has been held at least 6 months. If that applies to this tenancy, the interest is owed in addition to the sums above.

Under 765 ILCS 710 / 765 ILCS 715, deductions from a security deposit must be itemised in writing and substantiated by receipts or comparable documentation. Under 765 ILCS 710/1, a landlord who fails to provide an itemised statement in bad faith and fails to return the deposit within the statutory window is liable for twice the deposit, plus court costs and reasonable attorney's fees.

• Court costs + reasonable attorney fees recoverable (765 ILCS 710/1)

I therefore demand return of the full $950 you withheld within thirty (30) days of receipt of this letter.

If you maintain that any portion of the disputed amount is properly withheld, your response must include, for each contested line item: (i) the specific damage attributable to my tenancy beyond normal wear and tear, (ii) the depreciated value calculation supporting the charged amount, (iii) the date and method by which the itemisation was first delivered to me. Receipts alone do not satisfy these requirements.

Failure to return the full amount, or to provide the substantive response described above, within the thirty (30)-day window will be treated as confirmation of bad-faith retention and will prompt the filing of a small-claims action in Illinois under 765 ILCS 710 / 765 ILCS 715, seeking the full amount plus any damages, penalties, costs, and attorney fees recoverable under 765 ILCS 710 / 765 ILCS 715.

Please direct all responses in writing to the address above.

---

Sincerely,

Alina Petrova

Pet deposit kept, no pet damage

$950 demanded

Via certified mail · return receipt requested

Re: Demand for Return of Security Deposit at 1150 Palmetto Way, Unit 4, Westbrook,

Dear ,

This letter is addressed to both of you. Each of you is independently liable for the return of the security deposit of $2,000 paid in connection with the tenancy described above.

The property changed ownership during my tenancy. Under state law, the original landlord must either transfer the deposit to the successor or return it directly to the tenant, with written notice. Failure to do so leaves both parties jointly liable for the return of the deposit.

Under 765 ILCS 710 / 765 ILCS 715, a landlord transferring ownership of leased property must either:

1. Transfer the security deposit, in full and with an accounting, to the successor in interest and notify the tenant in writing of the transfer; OR

2. Return the deposit directly to the tenant, less any properly itemised deductions, with written notice.

Failure to comply with either obligation does not extinguish the deposit; it simply leaves both transferor and transferee jointly liable to the tenant.

I moved out on July 31, 2026. To date, neither of you has returned the deposit nor provided a properly itemised statement.

Under 765 ILCS 710/1, a landlord who fails to provide an itemised statement in bad faith and fails to return the deposit within the statutory window is liable for twice the deposit, plus court costs and reasonable attorney's fees.

• Court costs + reasonable attorney fees recoverable (765 ILCS 710/1)

I demand the return of the full deposit of $2,000 within thirty (30) days of receipt of this letter. This demand is made of both addressees jointly. The undersigned is not required to determine which of you currently holds the funds; the court will allocate ultimate responsibility between you.

Failure to comply will result in the filing of a small-claims action naming both of you as co-defendants.

---

Sincerely,

Terrence Blake

New owner, deposit never transferred

$2,000 demanded

Via certified mail · return receipt requested

Re: Demand for Return of Security Deposit at 76 Beacon Hill Road, Glenmoor, 00000

Dear ,

I am writing regarding the security deposit of $1,600 paid in connection with my tenancy at 76 Beacon Hill Road, Glenmoor, 00000. I moved out on August 6, 2026. You subsequently delivered an itemised statement of deductions (the precise date of the statement is not in my records). The burden is on you to justify each deduction with a written itemisation and documentation of damage beyond ordinary wear; I dispute these deductions in full and demand the entire amount back.

Each deduction below is your burden to justify. Unless you can substantiate an item with receipts, photographs, or other documentary evidence within the period set by 765 ILCS 710 / 765 ILCS 715, the full amount must be returned to me.

Receipts alone do not establish a permissible deduction. Even where you produce a receipt for an expenditure, the existence of a receipt does not, on its own, establish the right to withhold the corresponding amount from my deposit. Under 765 ILCS 710 / 765 ILCS 715, a permissible deduction must (a) be attributable to damage caused by the tenant that exceeds ordinary wear and tear, (b) reflect the depreciated value of any item replaced rather than the full replacement cost, and (c) be a written itemisation with receipts for charges, delivered within the statutory window. A receipt evidences only that you spent the money. It does not address tenant causation, depreciation, or the statutory itemisation requirements.

Illinois law provides for interest on security deposits at the statutory passbook rate for buildings with 25 or more units, where the deposit has been held at least 6 months. If that applies to this tenancy, the interest is owed in addition to the sums above.

Under 765 ILCS 710 / 765 ILCS 715, deductions from a security deposit must be itemised in writing and substantiated by receipts or comparable documentation. Under 765 ILCS 710/1, a landlord who fails to provide an itemised statement in bad faith and fails to return the deposit within the statutory window is liable for twice the deposit, plus court costs and reasonable attorney's fees.

• Court costs + reasonable attorney fees recoverable (765 ILCS 710/1)

I therefore demand return of the full $1,600 you withheld within thirty (30) days of receipt of this letter.

If you maintain that any portion of the disputed amount is properly withheld, your response must include, for each contested line item: (i) the specific damage attributable to my tenancy beyond normal wear and tear, (ii) the depreciated value calculation supporting the charged amount, (iii) the date and method by which the itemisation was first delivered to me. Receipts alone do not satisfy these requirements.

Failure to return the full amount, or to provide the substantive response described above, within the thirty (30)-day window will be treated as confirmation of bad-faith retention and will prompt the filing of a small-claims action in Illinois under 765 ILCS 710 / 765 ILCS 715, seeking the full amount plus any damages, penalties, costs, and attorney fees recoverable under 765 ILCS 710 / 765 ILCS 715.

Please direct all responses in writing to the address above.

---

Sincerely,

Sofia Marchetti

Repairs billed at inflated prices

$1,600 demanded

8 recent letters · scroll for more

Real Results

Illinois renters who got their deposit back

Most landlords respond within 10 days.

5 stars

Way easier than I expected. The demand letter got my deposit back without a lawyer.

LM
Linda M.Chicago, IL
+$2,400
5 stars

My landlord in Aurora went quiet for weeks over my deposit. I sent this letter and the full amount showed up within days.

BW
Brandon W.Aurora, IL
+$2,800
5 stars

My Naperville landlord had ignored me for a month, then folded once the deadline was in writing.

KB
Kevin B.Naperville, IL
+$1,150

FAQ

Common questions about Illinois security deposit law