Transfer of Leases and Security Deposits at Closing
When a tenant-occupied 2-4 unit apartment building is sold, the closing involves more than just the transfer of title. The buyer is also stepping into an ongoing landlord-tenant relationship. That means leases, security deposits, prepaid rent, and other tenant-related obligations often need to be addressed carefully as part of the sale.This is an area where buyers and sellers sometimes make incorrect assumptions. Some assume that a sale automatically ends the lease. Others assume that security deposits somehow stay with the seller. In most cases, that is not how it works. If the building is sold with tenants in place, the buyer generally takes over the seller’s position under the existing lease terms, and the tenant-related funds must be transferred properly at closing.
For Chicago two-flats, three-flats, and four-flats, this issue matters because a mistake in lease handling or security deposit accounting can create real problems after the sale. It can affect buyer expectations, tenant relations, and in some cases legal compliance.
This page explains the basics of how leases and security deposits are commonly handled when a 2-4 unit apartment building changes hands.
Quick Navigation
• Do Leases Transfer to the Buyer?
• Buyer Obligations After Closing
• Security Deposits and Accrued Interest
• Prepaid Rent and Other Tenant Credits
• Records and Documents to Review
• Common Closing Issues
• Related Chicago 2-4 Unit Guides
Do Leases Transfer to the Buyer?
In many tenant-occupied sales, the buyer generally takes over the seller’s position under the existing leases. That means the lease does not simply disappear because the building changes ownership.As a practical matter, the buyer typically becomes the new landlord after closing and must honor the existing lease terms unless the lease ends naturally, the tenant agrees to a change, or another lawful arrangement is made.
This is one reason buyers should review all current leases before closing. The lease may contain terms that affect:
• Monthly rent amount
• Lease expiration date
• Renewal rights
• Utility responsibilities
• Pet terms or parking rights
• Special side agreements
If a buyer is planning to live in the property, the lease dates become especially important. A tenant in a unit does not automatically have to move out just because the building was sold.
Buyer Obligations After Closing
Once the sale closes, the buyer generally becomes responsible for carrying out the landlord obligations connected to the existing tenancy. That includes honoring the lease terms that were in place at the time of closing.This may include:
• Collecting rent under the existing lease
• Recognizing the lease expiration date
• Honoring included parking, storage, or appliance terms
• Handling maintenance responsibilities assigned to the landlord
• Crediting any security deposit that was transferred at closing
Because of this, buyers should avoid assuming that every tenant can be moved, every rent can be raised immediately, or every lease can be rewritten right after the purchase. The details matter.
Security Deposits and Accrued Interest
Security deposits are one of the most important tenant-related items to address at closing. If the seller is holding a tenant’s security deposit, that money usually needs to be transferred to the buyer so the new owner can continue holding it after the sale.The transfer often includes:
• The original security deposit amount
• Any additional deposit held for the tenant
• Any interest accrued where required
These amounts are commonly reflected on the closing statement as a credit to the buyer. In simple terms, the buyer receives credit because they are taking over responsibility for returning those funds later if required under the lease and applicable law.
This is an area where careful recordkeeping matters. Buyers should not rely only on verbal statements about deposit amounts. The numbers should be verified and documented.
Prepaid Rent and Other Tenant Credits
In some transactions, the seller may be holding prepaid rent, last month’s rent, or some other tenant-related credit. These items should also be reviewed before closing.Examples may include:
• Rent paid in advance for a future period
• Last month’s rent held by the seller
• Pet deposits where applicable
• Key deposits or other refundable amounts
If the buyer is taking over the tenancy, these items usually need to be accounted for as part of the closing so both sides understand who is responsible after the sale.
Records and Documents to Review
Before closing, buyers commonly request records that help confirm lease and deposit details. These records help prevent disputes after the sale.Important items may include:
• Copies of all current leases
• Security deposit records
• Ledger showing rent payments
• Any written tenant side agreements
• Proof of prepaid rent or credits
• Tenant contact information when appropriate
Good records make the transfer smoother. Poor records can create confusion about what the tenant paid, what is owed, and what the buyer is actually inheriting.
Common Closing Issues
Several issues come up repeatedly when a tenant-occupied building is sold.Common problems include:
• Missing lease copies
• Incomplete security deposit records
• Unclear interest calculations
• Verbal agreements not reflected in writing
• Tenants claiming terms different from what the seller reported
• Buyers assuming a tenant will vacate when the lease still controls
This is one reason tenant estoppel letters may sometimes be useful. They can help confirm important lease terms directly with the tenant before closing.
It is also one reason attorneys, brokers, and buyers typically want these issues sorted out before the closing table rather than after.
Related Chicago 2-4 Unit Guides
Additional guides related to Chicago multifamily buildings include:• Buying a 2-4 Unit Apartment Building
• Selling a 2-4 Unit Apartment Building
• Tenant Estoppel Letters
• Chicago Rent Increase Rules and Fair Notice Ordinance
• Summary of Rights for Safer Homes Act
Chicago 2–4 Unit Apartment Building Guide
This article is part of the broader Chicago 2–4 Unit Apartment Building Guide which explains lease transfers, tenant protections, and buyer due diligence in Chicago small multifamily buildings.Other helpful guides include:
• Chicago 2–4 Unit Apartment Building Guide
• Tenant Estoppel Letters
• Buying a 2-4 Unit Apartment Building
Frequently Asked Questions
Does a buyer have to honor an existing lease after closing?In many tenant-occupied sales, yes. The buyer generally takes over the seller’s position under the existing lease terms after closing.
What happens to security deposits when a building is sold?
Security deposits, and any required interest where applicable, are typically transferred to the buyer at closing and reflected on the closing statement.
Can a seller keep the security deposit after the sale?
In most tenant-occupied sales, the deposit should be accounted for at closing because the buyer is taking over responsibility for holding it after the transfer of ownership.
Midwest Real Estate Data (MRED) All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of the Multiple Listing Service. Real estate listings held by brokerage firms other than Weichert, Realtors® - All Pro - Park Ridge may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. Copyright ©2026 All rights reserved.Based on information submitted to the MLS GRID as of September 12, 2026 8:30 PM UTC All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice.
Data is updated as of September 12, 2026 8:30 PM UTC