FHA Loans in Illinois: One Limit in All 102 Counties, and the Two-Flat That Fits It

DePaul's Institute for Housing Studies counts the units in two- to four-unit buildings at 26 percent of Chicago's housing stock. That is a lot of two-flats, three-flats and four-flats, and FHA insures a loan on one of them as long as one of the clients on the loan lives in the building.

FHA's 2026 loan limit in Illinois is $541,287 for a one-unit home in every one of the state's 102 counties, and it rises to $693,050 for two units, $837,700 for three units and $1,041,125 for four units.

I'm Jeff Moran, NMLS #483943, licensed to originate mortgages in Illinois through C2 Financial Corporation. The national FHA explainer covers how the program works, and this page covers what Illinois adds to it.

What is the FHA loan limit in Illinois?

HUD's Mortgagee Letter 2025-23 sets the 2026 FHA limits for loans whose case numbers are assigned on or after January 1, 2026. HUD's county file puts all 102 Illinois counties at the national floor, which is the lowest limit the program sets anywhere, so Cook County gets the same figures as Hardin County.

Units	FHA limit, every Illinois county
One	$541,287
Two	$693,050
Three	$837,700
Four	$1,041,125

In Illinois the county you buy in has no effect on how large an FHA loan can be; the price of the property and your own file decide that. A loan amount above the limit, not counting the upfront mortgage insurance premium if you add it to the loan, cannot be an FHA loan, and which loan fits lays out the other options side by side.

Buying a two-flat, a three-flat or a four-flat with FHA

The Chicago-area page walks through the neighborhoods where these buildings are common. FHA's handbook, HUD 4000.1, sets the same rules for them anywhere in Illinois.

One client on the loan has to live there. You'll need to move in within 60 days of signing the mortgage and plan to stay for at least a year. The down payment is the same as for a one-unit home: FHA asks for at least 3.5 percent of the value, and a purchase can be financed up to 96.5 percent of it.

A building with three or four units gets one more test. The appraiser estimates the market rent for every unit, including the one you will live in. The handbook then subtracts the larger of two figures, either the appraiser's estimate for vacancy and maintenance or 25 percent of that rent. Whatever is left has to cover the full monthly payment of principal, interest, taxes and insurance. A two-unit building without an accessory dwelling unit does not have that extra test.

Lawyers on both sides, and a title company in the middle

A common Illinois closing has a lawyer for each side and a title company running the settlement. FHA does not change who is at the closing table. The Illinois page explains why Illinois closes this way, and the closing-by-state comparison puts it next to the other states.

The spouse who is not on the loan

If you own the home you live in, Illinois law gives you a legal interest in it called the homestead estate. If you are married, the Illinois homestead statute makes a written release of it valid only when both of you sign. The FHA handbook lines up with that. When state law says the lender needs your spouse's signature for its claim on the home to hold up, your spouse signs either the mortgage itself or a document giving up their rights to the property. Your spouse does not sign the note, which is the promise to repay the loan, so your spouse is not personally on the hook for the payments. The signature is there so the lender's claim on the home stands. The spouse signature page shows how each state I lend in handles it.

Illinois is not on the IRS's list of community property states in Publication 555. FHA has a separate rule for those states that pulls a credit report on a spouse who is not on the loan and counts that spouse's debts. It applies when you live in one of those states or the property is in one, so an Illinois property does not trigger it on its own.

Transfer tax, the owner's policy and an FHA closing

Illinois transfer tax can come from the state, the county and sometimes the city or village, and who pays it varies with the local ordinance and the contract. The Illinois State Bar says that in most Illinois communities the seller commonly provides the owner's title policy, and it recommends putting that in the contract.

FHA lets a seller or another party with an interest in the sale contribute up to 6 percent of the sales price toward your closing costs, prepaid items and discount points. That money cannot count toward your 3.5 percent minimum down payment. The seller can agree in the contract to pay part of your closing costs, up to that 6 percent, and seller extras under FHA shows what the handbook allows.

Getting started in Illinois

When you're ready, you can see FHA priced for your own scenario, with closing costs for your Illinois county included. What a pre-approval involves covers the letter, and how debt-to-income is figured covers the ratio FHA uses. If you are a veteran, VA loans in Illinois are a separate conversation.

Nothing here is a loan approval, a denial, a commitment to lend, or legal advice. Loan limits are HUD's published 2026 figures.

Common questions

Is the FHA loan limit higher in Cook County than in the rest of Illinois?

No. HUD sets the same 2026 FHA limit in all 102 Illinois counties, Cook County included, and it is the national floor. The limit changes only with the number of units in the building, and a loan amount above it, before any financed upfront premium, cannot be an FHA loan.

Can I use an FHA loan to buy a two-flat in Chicago and live in one unit?

Yes. FHA insures two- to four-unit properties when at least one client on the loan moves in within 60 days of signing and plans to stay for at least a year. A building with three or four units also has to pass the handbook's rental test.

Does my spouse have to sign if they are not on the FHA loan?

Often yes, because Illinois requires the spouse's signature to give up the homestead estate, and the FHA handbook tells the lender to get it when the lender's claim on the home depends on it. Your spouse signs the mortgage or a release of rights, and since they do not sign the note, they are not personally responsible for repaying the loan.

Who pays for the owner's title insurance on an FHA purchase in Illinois?

In most Illinois communities the seller commonly provides it, according to the Illinois State Bar. That is a custom rather than a law, so the purchase contract controls, and you'll want who pays written into it.

Does FHA let the seller pay part of my closing costs in Illinois?

Yes, within limits. The handbook allows up to 6 percent of the sales price toward closing costs, prepaid items and discount points, and that money cannot count toward your minimum down payment.