C-PACE (Commercial Property Assessed Clean Energy) lets a commercial owner pay for efficiency, renewable, and water upgrades through a special assessment on the property tax bill. Terms can stretch 20 years or more. The national concept is simple. Chicago’s version is not. The city runs one program. Suburban Cook runs another. Collar-county towns join a third network. Every one of them sits on a Cook or collar tax bill that already strains owner cash flow. This guide walks through the Illinois law, the Chicago and Cook County programs, how C-PACE stacks with bridge and SBA debt, and where Chicago files go wrong.
For how C-PACE works nationally, start with C-PACE financing. For Chicago program rules, the primary source is Chicago PACE. Suburban Cook owners should read the Cook County C-PACE program page.
Call (833) 264-7776, or send the project through the C-PACE financing request. Our underwriting team works out of Hoffman Estates in Cook County.
The legal base: the Illinois PACE Act
Illinois enabled C-PACE with the Property Assessed Clean Energy Act (50 ILCS 50), enacted in 2017. The Act lets a municipality or county create a program. Owners can then voluntarily sign an assessment contract. The assessment repays private capital that funds qualifying improvements. It is collected like a property tax and stays with the building if it sells.
Three details of the Illinois model matter for underwriting:
- Local opt-in. Nothing happens until a city or county creates a program. Chicago and Cook County each did.
- Private capital. The city and county do not lend. Registered capital providers fund the project. The program administrator approves it and records the assessment.
- Lender consent. Existing mortgage holders must consent. The Chicago program makes this an explicit requirement.
Chicago vs suburban Cook vs collar counties
| Feature | City of Chicago PACE | Cook County C-PACE | Collar counties / other towns |
|---|---|---|---|
| Administrator | Loop-Counterpointe PACE LLC | Slipstream, via the Illinois Energy Conservation Authority | Often IECA, program by program |
| Where | Anywhere in the city | Participating suburban Cook areas | Town or county must opt in |
| Size | $100,000 to $300M+ | Project-dependent | Project-dependent |
| Assessment cap | 25% of value | Per program guidelines | Per program guidelines |
| Term | Up to useful life of longest improvement | Up to 30 years | Per program guidelines |
| Eligible property | Retail, office, hotel, industrial, 5+ unit multifamily, co-ops | Commercial, industrial, multifamily | Per program |
| Not eligible | Condos, 1–4 unit residential | 1–4 unit residential | 1–4 unit residential |
Chicago-specific requirements. Owners must be current on taxes, water, and sewer charges. No bankruptcy in the last two years. No uncured mortgage defaults, mechanics liens, or judgments on the property. The city also requires an Economic Disclosure Affidavit, like many city contracts. Up to 100% of eligible hard and soft costs can be financed. There are no balloon payments; the assessment fully amortizes.
What Chicago owners actually finance
Chicago’s building stock drives the scope. A 1920s courtyard apartment needs different work than a 1970s Elk Grove tilt-up.
| Building type | Common C-PACE scope |
|---|---|
| Courtyard and vintage multifamily (5+ units) | Boiler replacement, heating controls, window replacement, roof insulation, common-area LED, low-flow fixtures |
| Loft office and mixed-use | Rooftop units, building automation, elevator modernization tied to efficiency, envelope |
| Industrial and flex | Roof replacement with insulation, rooftop solar, LED high-bay, dock-door seals, compressed-air upgrades |
| Hotels | Central plant, PTAC-to-heat-pump swaps, water heating, laundry water recovery |
| New construction | Above-code mechanical, envelope, solar, and related soft costs |
Chicago’s Energy Benchmarking Ordinance requires larger buildings to report energy use each year. C-PACE is one of the few tools that pays for retrofits without a capital call. That matters when a benchmarking score drags down tenant interest or sale value.
How C-PACE stacks with bridge, bank, and SBA debt
C-PACE is a slice of the capital stack, not the whole stack.
| Layer | Chicago example | Who provides it |
|---|---|---|
| Acquisition | Bridge at 8.99%–13.5% IO, 12–24 months | Jaken Finance Group |
| Eligible retrofit | C-PACE assessment, 20–25 years | Registered PACE capital provider |
| Permanent senior | Bank, life company, or SBA 504/7(a) for owner-users | Bank or SBA partner lender |
| Equity | Whatever the first three do not cover | Sponsor |
Consent is the gating item. A PACE assessment gets paid with taxes, ahead of the mortgage. Many banks will consent at modest PACE-to-value ratios. Agency multifamily loans generally will not. Many DSCR lenders will not either. If your plan is to refinance a 12-unit Rogers Park building into a DSCR loan, confirm consent is possible before you record the assessment. Otherwise you may need to pay it off at refinance.
Owner-users. An SBA 504 owner-user can pair C-PACE with the 504 if the bank and CDC consent. It is often cleaner to put efficiency work inside the 504 project cost. Compare both on the same spreadsheet. Background: SBA loans Illinois and owner-occupied commercial loans Chicago.
Worked example — Uptown 36-unit courtyard building
Composite file. An investor buys a 36-unit courtyard building in Uptown for $5,400,000. The heating plant is original-era steam with failing controls. Windows are single-pane in half the units. The owner pays heat.
| Line | Figure |
|---|---|
| Purchase | $5,400,000 |
| Bridge at 65% | $3,510,000 at 10.75% IO (~$31,444/mo) |
| C-PACE scope: boilers, controls, windows, roof insulation, LED, low-flow | $900,000 |
| PACE-to-value | 16.7% (under the 25% city cap) |
| C-PACE term and rate (illustrative) | 20 years at 7.25% |
| Annual assessment | ~$86,600 |
| Projected annual utility savings | ~$41,000 |
| Net annual cost of the retrofit | ~$45,600 |
Without C-PACE, the investor needs $900,000 of additional equity or a second loan to do the same work. With C-PACE, that capital stays available for unit turns. The net $45,600 a year is real cost. It buys a building with fewer heat complaints, better benchmarking, and less deferred capex at sale.
Rent context. Illinois law preempts local rent control, so renewals can reflect upgraded units. Leases in Chicago remain subject to the RLTO. Do not plan on billing residential tenants a separate PACE fee; recover the cost through rent at renewal, if the market allows it.
Refinance plan. After stabilization, the investor takes out the bridge with a bank loan whose lender consented to the PACE assessment. If the preferred takeout lender refuses consent, the PACE balance must be paid off from refinance proceeds. That can erase much of the benefit. Pick the takeout lender first.
Worked example 2 — Schaumburg owner-user plant, Cook County C-PACE
Composite. A packaging manufacturer owns a 60,000 sq ft plant in Schaumburg. It plans a roof replacement with insulation, 250 kW of rooftop solar, LED high-bay lighting, and two rooftop units. Scope is $1,100,000. The existing bank mortgage balance is $2,300,000 on a $5,200,000 value.
| Line | Figure |
|---|---|
| C-PACE (Cook County program), 25 years at 7.25% | $1,100,000 |
| Annual assessment | ~$96,500 |
| Projected energy savings plus avoided roof reserve | ~$88,000 |
| Combined debt to value after PACE | ~65.4% |
| Bank consent | Required before closing |
The owner avoids a $1.1 million capital call. The cash stays in the company for a new production line. If the plant later sells, the assessment can stay with the building.
Local risk — Cook tax bills, consent, and program fit
Cook County billing delays. The assessment rides on the tax bill. Cook’s second-installment bills have been issued late in several recent years. Late bills shift PACE payment timing and can confuse escrow on the senior loan. Hold a reserve and have your servicer track both installments.
Reassessment stacking. Cook reassesses each triennial region every three years. A retrofit plus reassessment can raise your base tax while the PACE line is also on the bill. Model the combined bill. Do not model the PACE line alone.
Consent risk at refinance. C-PACE is long. Your senior loan may not be. Every future lender must accept the existing assessment. Keep PACE-to-value moderate.
Program boundaries. A parcel in Chicago uses the city program. A parcel in suburban Cook may use the county program. A DuPage or Kane parcel depends on whether that town joined a program. Confirm by PIN, not by mailing address.
Wrong asset. Two-flats, three-flats, and condo units are not eligible. Those owners should look at DSCR loans Chicago, cash-out refinance Chicago, or rehab-inclusive bridge loans Chicago.
Checklist for a Chicago C-PACE file
- Confirm the program by PIN: City of Chicago, Cook County, or another participating town
- Energy audit or contractor bids for eligible scope
- Taxes, water, and sewer current; no liens or recent bankruptcy
- Mortgage lender consent requested early
- Takeout lender confirms it will accept a PACE assessment
- Economic Disclosure Affidavit (city program)
- Combined tax-plus-PACE bill modeled with a reassessment bump
Related Chicago and Illinois guides
- C-PACE financing (national overview)
- Cook County Class 6b, 7b, and 8 incentives for owner-users
- Commercial lending Chicago
- Commercial real estate financing
- Industrial warehouse loans Chicago
- Chicago and Cook County property tax investor guide
- C-PACE financing Washington DC
Apply for C-PACE · Submit a scenario · (833) 264-7776
C-PACE availability, eligible improvements, caps, and terms are set by the City of Chicago, Cook County, and other participating Illinois programs under the Property Assessed Clean Energy Act. Verify current rules at chicagopace.org or the program administrator. Examples are illustrative composites. Bridge financing at 8.99%–13.5% interest-only and DSCR at 5.75%–10.5% apply to qualified Jaken Finance Group files and are subject to change.