Chicago Fair Notice Ordinance: How It Affects Rent Increases and Lease Renewals

An investor acquires a 3-flat in Logan Square with two below-market legacy tenants. The value-add business plan calls for repositioning rents to current market rates as leases expire, then refinancing based on the higher net operating income. Straightforward plan. Then they learn that one tenant has lived there for four years, and raising the rent requires 120 days' advance notice — and if the tenant rejects a rent increase of 10% or more, the landlord may owe relocation assistance.

The Chicago Fair Notice Ordinance, passed in 2020, fundamentally altered the timeline for repositioning Chicago rental properties with existing tenants. Understanding it is essential for investors acquiring occupied buildings where the investment thesis depends on rent correction.

What the Fair Notice Ordinance Requires

The ordinance establishes tiered notice periods based on how long the tenant has occupied the unit. The same notice period applies to both lease non-renewals and rent increases.

These notice periods are calendar days, not business days. The clock starts when the landlord delivers the written notice to the tenant.

The ordinance applies to all covered rental units under the Chicago RLTO — meaning all standard non-owner-occupied rentals within Chicago city limits, subject to the same owner-occupied exemptions that govern the RLTO generally.

The Tenant's Right to Stay at the Prior Rate

If a landlord fails to give the required notice for a rent increase, the tenant has the right to remain in the apartment at the existing rental rate until the legal notice period has elapsed.

In practical terms: if you have a tenant with three-plus years of occupancy and you issue a rent increase notice that is 90 days rather than 120 days before the intended effective date, the tenant can reject the increase, remain in the unit, and pay the prior rate for the first 30 days beyond your notice. You cannot force the new rate during the period your notice falls short.

This isn't a minor procedural detail. It directly extends the timeline to market rent in occupied acquisitions.

Rent Increases of 10% or More

The Fair Notice Ordinance adds a separate layer of complexity for large rent increases — defined as any increase of 10% or more above the current rent.

If a landlord issues a rent increase of 10% or more to a tenant who has occupied the unit for more than three years, that tenant has the right to:

• Accept the new rent and renew the lease
• Reject the increase, provide notice to vacate, and — in some circumstances — require the landlord to provide relocation assistance

The relocation assistance requirement is specific to long-term tenants (generally three or more years of occupancy) facing outsized rent increases. It typically equals one month's rent, paid to the tenant at the time of vacating. This is not a universal penalty — it applies when the tenant elects to leave rather than pay the higher rent, and only when the increase meets the 10% threshold.

For investors acquiring buildings with long-term legacy tenants at significantly below-market rents, the path to market rents runs through either the notice period (with the tenant accepting the new rate) or the relocation assistance process (if the tenant elects to leave). Either way, the transition is not immediate and carries a cost.

How This Damages Value-Add Timelines

The 120-day notice requirement for long-term tenants is the primary way the Fair Notice Ordinance compresses internal rates of return on value-add Chicago investments.

Consider the scenario: you purchase a 2-flat in Avondale in January. One unit is rented at below-market rates by a tenant who has been there four years. Your plan assumes market rents from both units within 90 days of closing (by April). The reality under the Fair Notice Ordinance:

• You must issue the rent increase notice at least 120 calendar days before the effective date
• If the current lease term runs through June, you cannot issue the increase notice until you own the property — so earliest issuance is late January, earliest effective date is late May
• If the tenant rejects a 10%+ increase, you may owe one month's relocation assistance before they vacate

The adjusted timeline pushes full market rent realization into mid-summer at earliest — adding five to six months of below-market income to your pro forma compared to the original 90-day assumption. Over the holding period, this delay materially affects cash-on-cash return and refinancing timing.

Out-of-state investors and buyers who rely on national real estate investing frameworks are particularly vulnerable to this miscalculation. The 120-day notice is not a common requirement in most U.S. markets. Modeling based on generic lease-to-lease timelines will systematically underestimate how long repositioning takes in Chicago.

What to Request During Due Diligence

Before closing on any occupied Chicago property where rent correction is part of the investment thesis, collect:

• Copies of all current leases
• Move-in dates for all tenants (to calculate applicable notice period)
• Current rent versus estimated market rent for each unit (to calculate whether any increases will exceed the 10% threshold)

With these three data points, you can build an accurate timeline for rent repositioning and model the relocation assistance cost in scenarios where long-term tenants elect to leave. Underwriting the acquisition without this information is underwriting to an optimistic scenario that doesn't reflect the law.

Non-Renewal Notices

The same tiered notice periods apply to lease non-renewals — not just rent increases. If you intend to convert a unit to owner-occupied use, substantially renovate the property, or simply not renew a particular tenant, the required notice period is the same.

For a long-term tenant you intend to not renew, the 120-day notice period means you must provide notice at least four months before the intended move-out date. If the lease term expires before the 120 days have elapsed and you haven't given notice, the tenant's right to remain at the existing rent extends until the full notice period has been satisfied.

The Fair Notice Ordinance and the RLTO Together

The Fair Notice Ordinance sits within the broader RLTO framework. It doesn't replace the RLTO's other requirements — security deposit handling, late fee caps, required disclosures — it adds to them. A landlord operating a fully RLTO-compliant tenancy who fails to comply with Fair Notice Ordinance timelines still faces liability.

Compliance requires knowing both frameworks simultaneously, which is why treating the RLTO as a single document underestimates the actual compliance surface.

The Fair Notice Ordinance isn't a deal-killer for Chicago value-add investments. It's a timeline adjustment that must be accurately modeled before acquisition. The Illinois Investment Property Guide covers the Fair Notice Ordinance notice calculation, relocation assistance requirements, and how to structure your acquisition due diligence to get an accurate repositioning timeline for any occupied Chicago property.

See more Illinois guides →