Folks, the first multifamily building I ever walked a student through was a tired little 4-plex on the west side of Peoria. The seller wanted $260,000 and had a one-page sheet that said it threw off $2,400 a month. I sat that student down at his kitchen table with a yellow legal pad, and by the time we'd written down what the taxes really were, what the roof would cost in about three years, and what the place actually rented for once he'd called the county and two of the tenants, that $2,400 had shrunk to about $900 of real cash flow. He didn't buy it. The man down the street did, and spent two years learning the same lesson my student got for free with a legal pad.
That's what this business comes down to. We don't buy houses, we solve problems, and the only way you know whether a building is a problem worth solving is to run the numbers honestly. So if you've been wondering how to invest in multifamily real estate without getting your head handed to you on your first deal, let me walk you through it the way I'd walk a new investor through it on my back porch in Illinois.
What "Multifamily" Actually Means
Multifamily means a residential property with two or more units. There are two camps, and the line between them matters more than most folks realize.
Small multifamily (2 to 4 units). Duplexes, triplexes, and 4-plexes. The bank treats these almost like a single-family house. You can use a conventional mortgage, sometimes an FHA loan if you'll live in one of the units, and you qualify on your income and credit. This is where most folks I mentor start, and where I'd point you too.
Large multifamily (5 units and up). The minute you cross into 5 units, the bank stops looking at you and starts looking at the building. Now it's commercial financing, underwritten on what the property earns, not on your W-2. A 12-unit in Bloomington gets evaluated on its income, plain and simple. That's a different animal, and you don't want it for your first rodeo.
I started small on purpose. I'm the cheapest guy you'll ever meet, and small multifamily let me learn to be a landlord, read an operating statement, and fire a bad property manager on a building where one mistake couldn't sink me.
How the Money Actually Comes In
A good multifamily building pays you four ways at once. Most beginners count only one, and that's how they end up disappointed or, worse, overpaying.
Cash flow. The money left over every month after the mortgage, taxes, insurance, repairs, a vacancy cushion, and management are all paid. On that Peoria 4-plex, the seller wanted my student to believe the cash flow was the gross rent. It is not. The honest way to measure it is cash-on-cash return: the cash you pocket in a year divided by the cash you put in. Put $80,000 down, clear $6,400 a year, and you've earned 8 percent on your money. I wrote a whole piece on how to hit a 6 to 8 percent cash-on-cash return on multifamily because that band is realistic in most Illinois markets if you buy right.
Appreciation. Here's a fork in the road folks miss. On a 2-to-4-unit building, the value is set by what similar buildings down the street have sold for, same as a house. On a 5-plus-unit building, the value is set by the income. If you raise the net operating income on a 20-unit by $20,000 a year, you've made the building worth six figures more at a 6 percent cap rate. That's forced appreciation, the real engine on the commercial side. Whether you chase cash flow or appreciation depends on your situation, and I've laid out the trade-off between appreciation and cash flow for folks trying to decide which game they're playing.
Loan paydown. Every month your tenants make the mortgage payment for you, and a little more of the building becomes yours instead of the bank's. On a $200,000 loan you might knock down $3,000 to $4,000 of principal the first year and more every year after. Not flashy, but it's the surest brick in the wall.
Tax treatment. I'm not your accountant and won't play one. Just know that depreciation shelters a good chunk of that cash flow from taxes, which is part of why a rental's after-tax return often beats the spreadsheet. Talk to a real CPA before you count on a dollar of it.
The Numbers Are Sacred — Learn These Cold
The numbers are sacred. People lie about numbers all the time, sellers especially, but numbers themselves don't lie. Here are the ones to know before you write an offer.
Gross rents. Every dollar the building would collect if all units were full and everybody paid. The top line, and the number sellers love to wave around.
Vacancy. A real estimate of what you'll lose to empty units and folks who don't pay. In most Illinois markets I underwrite 5 to 8 percent. If a seller hands you a sheet that shows zero vacancy, hand it back. There's no such building.
Net operating income, the NOI. Gross rents, minus vacancy, minus every operating expense: taxes, insurance, repairs, management, utilities you cover, and a reserve for big-ticket items. NOI is what the building earns before the mortgage, the most important number in commercial multifamily, and the one sellers fudge the hardest.
Debt service coverage ratio, the DSCR. Your NOI divided by your annual loan payments. Commercial lenders want 1.25 or better, meaning the building earns 25 percent more than the mortgage costs. Below 1.0 and it can't even pay its own loan, a problem for you and the bank both.
Cap rate. NOI divided by purchase price. A building with $30,000 of NOI selling for $500,000 is a 6 cap. Higher cap rates mean more income for the price and usually more hair on the deal. In a lot of Illinois secondary markets you'll see 6 to 8 caps, while the hot coastal cities trade at 4s and 5s that make my Midwestern heart hurt.
If a deal only works when you assume rents rise, expenses stay flat, and nothing ever breaks, it doesn't work. Underwrite like a grumpy grandpa, not a salesman.
How to Read a Market
Not every market is built for the same kind of investor, and the market that's right for me in Illinois may be all wrong for you.
Rent-to-price ratio. Does the rent justify the price? In parts of central Illinois you can still buy a duplex for $150,000 that rents for $1,400 to $1,600 a month, and that ratio leaves room for honest cash flow. In a compressed coastal market you might pay $700,000 for the same rent roll and be betting entirely on appreciation. Know which bet you're making before you make it.
Property taxes. This bites folks in Illinois the hardest, and I'll be straight about my own state: our property taxes are brutal. A building that looks like an 8 percent return on the rent roll can cash-flow like a 4 percent return once the real tax bill lands. Pull the actual county tax record on every property, and never assume your bill stays the seller's, because a reassessment at your purchase price can jump it.
Insurance. Premiums have climbed everywhere, and you can't underwrite off a number from three years ago. Get a real quote on the building before you're under contract.
Supply and demand. Is the town adding jobs or losing them? Is anybody building new apartments down the road that'll compete with you? Jobs and population drive rents over the long haul, and they're the difference between a building that gets easier to own and one that gets harder.
Financing, Plainly
On small multifamily, your financing looks like a house: conventional loans, FHA if you'll live there, competitive rates. On 5-plus units you're in commercial territory: local bank portfolio loans, agency products through Fannie and Freddie, and bridge loans for value-add buildings. My one piece of advice is to make friends with a lender who does multifamily for a living before you have a deal on the table. A local banker who underwrites investment property all day will move faster and surprise you less at closing than a retail shop that does houses.
The Mistakes I See Most
Learning from somebody else's expensive education is one of the few free things in this business, so here's mine.
Trusting the seller's numbers. Build your own operating statement from scratch, every time. The county tax record, a real insurance quote, the actual utility bills, the maintenance history, those are your inputs. The seller's pro forma is a wish list.
Forgetting the big-ticket repairs. Roofs, furnaces, water heaters, and electrical panels don't last forever, and an older building will hand you a bill when you least expect it. Set money aside at purchase. This is why I tell folks to evaluate the HVAC before they buy and get a thorough investment-property inspection instead of waving it for a faster close. The five hundred dollars you save skipping an inspection is the cheapest money you'll ever lose.
Pretending management is free. Professional management runs 8 to 12 percent of collected rent. Put it in your model even if you plan to manage the building yourself at first. If the deal only works because you're the unpaid handyman, you don't have a deal.
Buying far from home in a market you don't understand. I've watched folks buy three states away off a slick photo and a pro forma, then spend two years bleeding because they never saw the building. Start where you can drive to it.
Getting Started
Most folks come in one of two ways: buy a small building on residential financing and learn the trade on something forgiving, or go in at 5-plus units alongside a partner or mentor who's already walked through commercial lending. Both work. I started small, and I'd start you small too. Either road, the foundation is the same. Learn the four ways the money comes in, underwrite every number like it owes you an apology, and build your relationships with lenders, contractors, and managers before you need them, not the morning you're trying to close.
I'm just an old grumpy grandpa-looking guy who taught high-school English for ten years before he figured any of this out, and I'll tell you what I tell everybody at my kitchen table: the building doesn't care how excited you are. The curb appeal doesn't pay the mortgage, and neither does the seller's enthusiasm. The numbers do. Run them honest, and let them tell you whether it's a problem worth solving.
Chris Albin and CRARE Instruction do not guarantee any level of money, success, or lifestyle from learning any of the strategies discussed here. The information in this post is of a general nature and is not intended to replace specific advice you may receive from a licensed professional for legal, financial, or business decisions. Individual results will vary depending on several factors, including your starting point, your effort, and your resources. All information is believed to be true and accurate, and is subject to change without notice.
