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Illinois Investor + DSCR Loans: Run the Arithmetic Before You Write Off the State

Program and regulatory figures verified September 15, 2026. Details change; confirm your scenario with us.

By Mike Certo, Cornerstone First Mortgage · NMLS #260555 ·

Buying or refinancing Illinois rental property? We underwrite on the property's cash flow, and we start by showing you the two numbers the Illinois search results bury: what these markets actually yield, and what the tax line really costs an investor who does not live in the building.

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The arithmetic investors skip

Illinois gets written off in one sentence, usually something about taxes or Chicago, and the buyer moves on to a Sun Belt metro. That is a decision made on reputation. Here is the same measurement applied to Chicago and to the markets people leave Illinois to buy, taken from one publisher in one month so the ratio means something.

MarketTypical valueTypical rentGross yield
Chicago$357,265$2,2107.42%
Tampa$358,706$2,0016.70%
Indianapolis$293,506$1,5526.34%
Atlanta$377,428$1,8535.89%
Dallas$360,437$1,6595.52%
Nashville$452,186$1,8134.81%
Phoenix$442,078$1,7224.67%

Zillow typical home value against Zillow typical asking rent, both as of 2026-08-31. Gross yield is annual rent divided by value. It is a market indicator, not an underwrite: it excludes taxes, insurance, vacancy and management, and on an Illinois deal the tax line is the one that bites. We deal with that honestly on the property tax page.

Downstate is where the cash flow actually is

Chicago wins the comparison above, and it is still not the strongest math in the state. Danville and Decatur both run 10.15%, Macomb 9.86%, Peoria 8.08%. Those are small markets with thin buyer pools and real management questions, which is exactly why they are priced the way they are. We lend in both halves and we will tell you which one fits what you are trying to do. See every Illinois market we measured.

The six-month clock, and why nearly every article says seven

Search for the Illinois redemption period and you will be told seven months. That figure is correct for an owner-occupied home and wrong for your rental. The Illinois Mortgage Foreclosure Law defines "residential real estate" by who lives there, not by what the building is, so a tenant-occupied property falls on a different and shorter track. The reasoning is short enough to check yourself on the redemption page.

Why the rent assumption holds up

A DSCR underwrite is only as good as the rent it is built on, so the question worth asking about any state is whether that rent can be capped by a city later. In Illinois it cannot. The General Assembly preempted local rent control in 1997 and wrote the preemption to reach home rule units by name, which is the reason Chicago has an active rent control campaign and no rent control. Details and the statutory text are on the preemption page.

How the loan actually works

We measure the property's monthly rent against the full monthly payment, principal, interest, taxes, insurance and any association dues. If the rent covers it, the file works, whatever your tax returns say. Most investors put 20-25% down, close in an LLC, and keep buying past the property count where agency financing stops. Here is the whole structure, and here are the programs if you would rather just run your number.


Mike Certo · NMLS #260555 · Cornerstone First Mortgage NMLS #173855 · Equal Housing Lender. Educational content, not a loan commitment and not legal or tax advice. Assessment levels, the state equalization factor, county tax rates and city rental ordinances change, and the figures here carry the date we verified them. Confirm current requirements with the county assessor, the county clerk, your CPA, or an Illinois real estate attorney before you buy. Loans are subject to buyer and property qualification.