What is a commercial real estate loan?

It is a loan to buy, refinance, or fix up a building your business uses or rents out. The building backs the loan, so the bank can take it if the loan is not paid. The bank still looks at you too: your cash flow, your credit, and whether your paperwork agrees with itself.

How is a commercial mortgage different from a home mortgage?

A home loan mostly checks your credit score and whether your paycheck covers the payment, against a house that is easy to sell. A building loan for your business is a bet on the business itself, because the payment comes out of the business and a special-purpose building is harder to resell. Business building loans usually want more money down. The payment is often figured over 20 or 25 years, but the whole balance can come due in 5 or 10, so you have to pay it off or get a new loan that day. There are often fees for paying it off early. And the bank reads your business numbers, not only your paycheck.

What down payment do I need for a commercial real estate loan?

There is no single number. Public education sites often talk about 15% to 30% or more, and it moves with the type of building, who uses it, and the bank. Some SBA-backed paths ask for less cash at closing when you qualify. What the appraisal says the building is worth is what sets your real number. Ask the bank you are talking to.

What documents do commercial real estate lenders want?

Business and personal tax returns, financial statements, bank statements, a personal financial statement for each owner, a list of everything the business already owes, the purchase contract or the details of the loan you are refinancing, a rent roll and leases if tenants pay you, your entity paperwork, and information about the building itself for the appraisal and any environmental check. The bigger the project, the longer the list.

"Commercial real estate loan: know your numbers before you shop rates"

August 19, 2026 · Reviewed September 6, 2026

Commercial real estate loan: know your numbers before you shop rates

A commercial real estate loan pays for a building your business uses or rents out. The building backs the loan, which means the bank can take it if the loan is not paid. Your cash flow is still on the hook too.

Search that phrase and you get rate charts and payment calculators. They leave out the part that stalls most of these loans: the owner cannot show the business can cover the new payment, or the building does not fit the kind of loan they asked for.

What this loan is

You are borrowing money for property the business uses. That covers a building you work out of, some buildings you rent to tenants, refinancing a building you already own, and construction or a big remodel.

The bank looks at three things.

The building. What is it worth, what shape is it in, does anyone pay rent there, and could the bank sell it if you stopped paying.

You and the business. Your credit, your cash flow, how long you have run this business, and whether you will sign a personal guarantee. A personal guarantee means you owe the money as a person if the business cannot pay it.

The shape of the loan. How much you put down, how many years you have, how the payment is figured, and what it costs you to pay it off early.

If either side is weak, you get less money, a higher rate, or a file that sits.

If the building is not the whole story, look at equipment financing, a working capital loan, or a business line of credit.

This is not a bigger version of your house loan

Most owners buying a building expect it to work like buying a home. Good credit score, income that covers the payment, sign here. That is the single biggest thing people get wrong, and it costs them months.

Here is why the two are different.

A home loan is a short list of checks. The bank looks at your credit score, makes sure your paycheck covers the payment, and knows what the house is worth because houses like it sell all the time. If you stop paying, the bank takes the house and sells it. There are always buyers for a house.

A building loan for a business is a bet on your business. The bank is not asking whether you can afford a payment out of a paycheck. It is asking whether this business will still be making money in year seven, because the payment comes out of the business, not out of a salary. If the business slows down, there is no paycheck behind it. And if the bank ends up with the building, an auto shop with three lifts and a paint booth does not sell like a three-bedroom ranch. Fewer buyers, longer wait, less money back.

So the bank looks at things your mortgage lender never asked about.

Whether the business can carry it. Not your household income. The money the business brings in, after real expenses, on top of every payment it already makes. This is the main question and everything else is secondary to it.

How long you have run this business and how steady it is. A lender is buying years of your operating history. Lumpy revenue, a bad year in the returns, or a business you bought last year all change the answer.

Who uses the building and how. A building your business works out of, and a building you buy to rent to tenants, are two different loans with different rules. If tenants are paying the loan, the bank reads their leases and asks how long they are staying.

What kind of building it is. A warehouse, a restaurant, a medical office, and a car wash carry different risk to the bank, because a car wash is hard to sell to anyone who is not opening a car wash. The more special-purpose the building, the more cash they want you to put in.

You personally, on top of all that. Your credit still matters. Your personal financial statement still matters. And you will most likely sign a personal guarantee, which means you owe the money as a person if the business cannot pay. Your home loan did not ask the business for anything. This loan asks you for both.

That difference in thinking is where the surprises come from. Four of them show up every time.

Money down. A building loan for your business usually wants more cash up front than a house did. How much moves with the type of building and the bank. That is not the bank being difficult. It is the bank leaving itself room in case the building is slow to sell. Plan on real money out of pocket unless a specific program changes it.

How long you have. On a house, 30 years means 30 years. On many business building loans, the payment is figured like a 20 or 25 year loan, but the whole balance comes due in 5 or 10 years. Bankers call that a balloon. On that day you either pay off what is left or get a new loan to cover it. The bank does not want to guess what your business or the rate will look like two decades out, so it buys itself a checkpoint. Know that date before you sign, not in year four.

Paying it off early. Business building loans often charge you for paying off early. Sometimes it is a fee that shrinks each year you hold the loan. Sometimes you owe the bank the interest it expected to earn. Ask what it costs to pay this off in year three before you fall in love with a rate.

Paperwork. Buying your house took a short stack: pay stubs, W-2s, a couple of tax returns, and bank statements. This one is a lot more. The bank wants three years of business and personal tax returns, your profit and loss and balance sheet through today, your bank statements, a personal financial statement for each owner, a list of everything the business already owes, your leases if tenants pay rent, and the paperwork showing how your company is set up. They are not asking to be difficult. Your paycheck was easy to check. A business takes more pages to show whether it makes money.

None of that means the loan is out of reach. It means you are being reviewed as a business owner, not as a paycheck, and you should walk in with the numbers that answer those questions.

Bank loan or SBA-backed

A regular bank building loan. The bank lends its own money and sets its own rules. This works when you have the cash to put down, the building is solid, and your income covers the payment with room to spare.

An SBA-backed building loan. These are still bank loans. The SBA guarantees part of it, which can mean less money down and more years to pay. There is a catch that stops a lot of owners: your own business has to use most of the building. It is commonly discussed as at least 51% of an existing building, and more for some new construction. Confirm the current rule with an SBA lender and at sba.gov. Also know that the 504 program is built for buildings and heavy equipment, not for money to run the business day to day.

For the wider SBA paperwork picture, see SBA loan requirements: package before the portal.

Neither one skips the review. A government guarantee does not make the bank stop asking questions. Your numbers still have to work.

Can the business cover the payment

This is the question behind every other question. Does the money coming in cover the new payment, after real expenses, on top of what you already owe.

Owners often show a plan that only works if everything goes right. Bankers call that a pro forma, which is a forecast of what you expect to happen. They read it, then they knock the good parts down. Assume they will.

Run these four checks before you make an offer on a building.

Use a slow quarter, not your best month. Pull your worst three months from last year and see if the payment still works. That is the number the bank is looking for.

Count the whole cost of the building. The loan payment is not the only bill. Add property taxes, insurance, repairs, and empty months if you are counting on tenant rent to help.

Stack the new payment on the old debt. Add it on top of every loan, lease, and card the business already pays each month. A payment that works alone can break you once it sits on the pile.

Look at your household too. On smaller loans the bank looks at your personal bills alongside the business. If your house payment and personal debt are heavy, that shows up in their math.

If you want a plain-English way to see the coverage math, use the DSCR calculator. DSCR is bank talk for a simple idea: how many times over does your income cover the loan payment. The calculator does not approve anything. It tells you whether your story is close.

What the bank will ask you for

Expect the usual business paperwork plus everything about the building.

Business and personal tax returns. Usually the last three years of both. They compare what you told the IRS against what you are telling them.

This year's numbers and bank statements. Your profit and loss and balance sheet through today, plus recent months of statements. They check that the deposits match the income you claim.

A personal financial statement for each owner. A one-page picture of what you own and what you owe personally. Every owner with a meaningful share signs one.

A list of everything the business already owes. Every loan, lease, card, and advance, with the monthly payment and the balance left. Leave one off and the bank finds it anyway, and then they wonder what else is missing.

Your entity paperwork and who owns what. Articles, operating agreement, and the ownership breakdown. This tells them who has to sign and who guarantees the loan.

The purchase contract, or the details of the loan you are refinancing. They need to see the price, the terms, and the closing date.

Rent roll and leases if tenants pay you. A rent roll lists who rents each space, what they pay, and when their lease ends. Rent counted on a handshake does not count.

Information about the building. Address, size, condition, use, and past reports. The bank orders an appraisal to decide what the building is worth. On some properties they also order an environmental check to make sure there is no contamination on the site. Both cost money and take weeks.

A budget for the work if you are building or remodeling. Line by line, with real bids, not a guess.

For the general list, see the business loan documents checklist. One rule cuts across all of it: your tax returns, your personal financial statement, your credit report, and your debt list have to tell the same story. When those pages disagree, the bank stops and asks, and that stop is what costs you a month.

What the appraisal does to your down payment

The bank does not lend against the price you agreed to pay. It lends against what the appraisal says the building is worth. Banks call the comparison loan-to-value, which is the loan amount divided by that value.

Say you agree to pay $500,000 and the bank will lend 75%. You are planning to bring $125,000. Then the appraisal comes back at $460,000. The bank still lends 75%, but now that is $345,000, so you need $155,000 to close. That gap shows up late and it is real money.

Keep extra cash set aside for that day, and understand your contingencies before you give them up.

The order to do this in

Decide what the building is for: your business works there, tenants pay rent, you are refinancing, or you are building.
Write down the cash you can put in without starving the business.
Test the payment against a slow quarter.
Pick the bank path or the SBA path based on who uses the building and what you qualify for, not on an ad.
Get your financial house in order: tax returns, credit reports, a personal financial statement for each owner, and a cash flow analysis showing how much payment your income covers. Pull the building paperwork at the same time.
Then talk to banks and compare loans you can explain out loud.

Shopping rates with an empty folder is how a building loan turns into a three-month paperwork chase.

For the habit that carries across every loan type, read business loan application: get ready first. For picking between loan types, see best small business loans: how to choose before you shop.

Where Zero2Ten fits

Zero2Ten is not a lender and does not make commercial real estate loans.

We built Zero2Ten HQ so you can see how lendable you are and how much payment your business can carry before you go chasing offers. You gather your own tax returns and building paperwork. You do it once, and you walk in knowing your numbers are right.

The wrong loan on the right building can still cost you the business. Know your numbers first.

Free early access: https://www.zero2ten.biz

Common questions

What is a commercial real estate loan?: It is a loan to buy, refinance, or fix up a building your business uses or rents out. The building backs the loan, so the bank can take it if the loan is not paid. The bank still looks at you too: your cash flow, your credit, and whether your paperwork agrees with itself.
How is a commercial mortgage different from a home mortgage?: A home loan mostly checks your credit score and whether your paycheck covers the payment, against a house that is easy to sell. A building loan for your business is a bet on the business itself, because the payment comes out of the business and a special-purpose building is harder to resell. Business building loans usually want more money down. The payment is often figured over 20 or 25 years, but the whole balance can come due in 5 or 10, so you have to pay it off or get a new loan that day. There are often fees for paying it off early. And the bank reads your business numbers, not only your paycheck.
What down payment do I need for a commercial real estate loan?: There is no single number. Public education sites often talk about 15% to 30% or more, and it moves with the type of building, who uses it, and the bank. Some SBA-backed paths ask for less cash at closing when you qualify. What the appraisal says the building is worth is what sets your real number. Ask the bank you are talking to.
What is owner occupancy for SBA real estate loans?: On many SBA building loans, your own business has to use most of the building. It is commonly discussed as at least 51% of an existing building, and more for some new construction. Confirm the current rule with an SBA lender. If you are buying a building only to rent out, that usually needs a different kind of loan.
What documents do commercial real estate lenders want?: Business and personal tax returns, financial statements, bank statements, a personal financial statement for each owner, a list of everything the business already owes, the purchase contract or the details of the loan you are refinancing, a rent roll and leases if tenants pay you, your entity paperwork, and information about the building itself for the appraisal and any environmental check. The bigger the project, the longer the list.