Commercial real estate financing can turn a growing small business from a tenant into an owner. When your team has outgrown its office, the next move is a big decision: sign a larger lease, buy a building, or build something new. Buying can lock in your occupancy costs, build equity and give you control over your space, but it also ties up cash and adds debt. This guide explains how small businesses can secure commercial real estate financing for office expansion, what lenders look for, how the main loan options compare, and how to prepare a strong application.
Step One: Lease, Buy or Build?
Before you look for a loan, make sure ownership is the right move. Here is a quick comparison:
| Option | Upfront cash | Long-term cost | Flexibility | Best for |
|---|---|---|---|---|
| Lease a larger office | Low (deposit, fit-out) | Rent rises over time; no equity | High | Fast-changing or uncertain growth |
| Buy an existing building | Medium to high (down payment, closing costs) | Fixed or predictable payments; builds equity | Medium | Stable businesses planning to stay 7+ years |
| Build or heavily renovate | High | Custom space; equity; possible higher cost | Low | Businesses with specialized space needs |
Ownership usually makes the most sense when your business has steady revenue, you expect to stay in the area for many years, and the monthly cost of owning is close to what you’d pay in rent. It’s riskier for businesses whose space needs might change sharply or that need cash for other priorities.
What Lenders Look For
Commercial lenders look at both the business and the property. Expect them to review:
- Cash flow: enough income to cover the new loan payments comfortably.
- Debt service coverage ratio (DSCR): many lenders want a ratio of about 1.20 to 1.25 or higher.
- Credit: business credit history and the owners’ personal credit scores.
- Down payment: typically 10% to 30%, depending on the loan type.
- Time in business: often at least two years, with tax returns to prove it.
- Property value: an independent appraisal confirms the building supports the loan.
- Owner occupancy: some loan programs require your business to use most of the building.
- Personal guarantees: owners usually guarantee small business real estate loans.
Strong credit improves your rate and terms. Our guide on how to build a small business credit profile walks through the steps.
How DSCR works
DSCR compares the cash your business has available to pay debt with the total annual debt payments.
Formula: Net operating cash flow ÷ Annual debt payments
Example: if your business generates $100,000 a year in cash flow available for debt, and the new loan costs about $76,300 a year, your DSCR is about 1.31. That meets most lenders’ minimums, with some room to spare.
Your Main Financing Options
1. Conventional commercial mortgage
Offered by banks and credit unions, these loans usually require 20% to 30% down. Terms often run 5 to 20 years, with payments calculated over 20 to 25 years. That means many loans end with a balloon payment, which you either pay off or refinance.
Pros: flexible property types, faster approval than government programs.
Cons: larger down payment, possible balloon payment, rates that may adjust.
2. SBA 504 loan
The SBA 504 program is designed for buying, building or improving owner-occupied commercial real estate and major equipment. A typical structure looks like this:
| Source | Typical share | Example on a $1.2 million building |
|---|---|---|
| Bank first mortgage | About 50% | $600,000 |
| Certified Development Company (CDC) loan backed by the SBA | About 40% | $480,000 |
| Business owner down payment | About 10% | $120,000 |
The down payment can rise to 15% or more for newer businesses or special-purpose buildings. The CDC portion usually comes with a long-term fixed rate. Your business generally needs to occupy at least 51% of an existing building, or 60% of a newly built one.
Pros: low down payment, long fixed-rate terms, no balloon on the CDC portion.
Cons: more paperwork, owner-occupancy rules, and some fees.
3. SBA 7(a) loan
The SBA’s flagship 7(a) program can also be used to buy real estate, often combined with renovations, equipment or working capital in one loan. Loan amounts can reach up to $5 million.
Pros: flexible use of funds, long terms for real estate.
Cons: rates are often variable; guaranty fees apply.
4. Construction loans
If you’re building or doing a major renovation, a construction loan pays contractors in stages as work is completed. Many convert into a permanent mortgage once the building is finished.
Pros: funds custom projects.
Cons: higher risk, detailed plans and budgets required, interest during construction.
5. Seller financing
Some property owners will finance part of the sale themselves, especially in slower markets. Terms are negotiable.
Pros: flexible, may require less from a bank.
Cons: often short terms with a balloon payment.
Comparing Monthly Costs
Here is an illustration of how financing choices change your cash needs on a $1.2 million building. The figures assume 25-year payment schedules and are estimates only.
| Option | Down payment | Loan amount | Approx. monthly payment |
|---|---|---|---|
| Conventional loan at 7%, 25% down | $300,000 | $900,000 | About $6,360 |
| SBA 504: bank portion at 7% plus CDC portion at 6.5%, 10% down | $120,000 | $1,080,000 | About $7,480 |
The SBA 504 option keeps $180,000 more cash in the business at closing, but the monthly payment is higher because you borrow more. The right choice depends on whether your business values cash reserves or lower monthly payments more.
Don’t Forget These Extra Costs
- Closing costs: appraisal, environmental report, legal fees, title insurance and lender fees.
- Fit-out and renovation: walls, wiring, data cabling and furniture for your team.
- Property taxes and insurance: now your responsibility instead of the landlord’s.
- Maintenance and repairs: roofs, HVAC and parking lots all need budgets.
- Moving costs: including any downtime during the move.
Equipment and furniture don’t have to come out of the real estate budget. Our guide to equipment leasing options explains how to spread those costs over time.
A 90-Day Roadmap to Financing
Days 1–30: Prepare
- Define how much space you need now and in five years.
- Run a lease-versus-buy comparison with your accountant.
- Gather three years of business and personal tax returns.
- Update your profit and loss statement and balance sheet.
- Check business and personal credit reports.
Days 31–60: Shop properties and lenders
- Work with a commercial real estate broker to find suitable buildings.
- Talk to at least three lenders, including a bank with SBA experience.
- Get pre-qualified so you know your realistic budget.
- Ask each lender about down payment, term, rate type, fees and prepayment penalties.
Days 61–90: Apply and close
- Make an offer with financing, inspection and environmental contingencies.
- Submit a complete loan package, including a short business plan and cash flow projections.
- Order the appraisal, environmental review and property inspection.
- Review loan documents carefully with an attorney before closing.
How to Strengthen Your Application
- Show steady cash flow: lenders like consistent revenue and healthy margins. Our guide to cash flow management can help you tighten your numbers.
- Collect receivables faster: strong collections improve your cash position. See our guide on how to manage outstanding invoices.
- Cut unnecessary costs: lower expenses improve DSCR. Read our guide on how to reduce operational expenses.
- Keep a cash cushion: lenders want to see reserves after the down payment.
- Explain the expansion plan: show how more space will support growth in revenue or staff.
A Real-World Example
Consider an accounting firm with 18 employees that had spent eight years in a leased office. Rent had risen several times, and the team was squeezed into a space designed for 12. The partners found a two-story building for $1.2 million, with room for 30 staff and a small ground-floor unit they could rent to another business.
They compared two offers. A local bank offered a conventional loan with 25% down and a 10-year term with a balloon payment. An SBA lender offered a 504 structure with 10% down and a long-term fixed rate on the CDC portion. Because the firm wanted to keep cash for hiring and technology, the partners chose the 504 loan, even though the monthly payment was a little higher. Their monthly cost of ownership ended up close to what a comparable new lease would have cost, and every payment now built equity in a building they controlled.
Before closing, they ordered an environmental report and a full inspection, which uncovered an aging HVAC system. They negotiated a price reduction to cover part of the replacement cost.
This example is illustrative and does not describe a specific business.
Tax and Ownership Structure Considerations
Owning real estate can bring tax benefits, but also complexity. Points to discuss with your accountant include:
- Depreciation: commercial buildings are generally depreciated over a long period, while some improvements and equipment may be written off faster.
- Interest deductions: mortgage interest on business property is usually a deductible business expense.
- Separate ownership entity: many owners hold the building in a separate company that leases it to the operating business. This can protect the property from business liabilities and make a future sale of either one easier.
- Property taxes: check local rates and how often properties are reassessed.
Questions to Ask Every Lender
- What down payment, interest rate and rate type are you offering?
- What is the term, and is there a balloon payment?
- What fees will I pay at closing?
- Is there a prepayment penalty, and how is it calculated?
- What DSCR and cash reserves do you require?
- Do you require a personal guarantee, and from whom?
- How long does approval and closing usually take?
Comparing answers side by side helps you see the true cost of each offer, not just the headline rate.
Mistakes to Avoid
- Buying too much space too soon: unused space ties up capital. Consider leasing out part of the building to a tenant, if loan rules allow.
- Draining cash for the down payment: leave enough working capital to run the business.
- Ignoring balloon payments: plan early for refinancing or payoff.
- Skipping due diligence: environmental problems, zoning limits or structural issues can be very costly.
- Not reading prepayment terms: some loans charge large penalties if you pay early or refinance.
- Personal guarantees without planning: understand what you’re personally liable for if the business struggles.
Quick Answers
How much down payment do I need for commercial real estate financing?
Typically 20% to 30% for conventional loans and as little as 10% for SBA 504 loans, depending on your business and the property.
Can a new business get a commercial real estate loan?
It’s harder, but possible. SBA programs may accept newer businesses with a larger down payment, strong owner experience and solid projections.
How long does it take to close?
Conventional loans can close in about 30 to 60 days. SBA loans often take longer because of extra paperwork and approvals.
Can I rent out part of the building?
Often yes, but SBA programs require your business to occupy most of the space. Check occupancy rules before you buy.
Is it better to buy or lease office space?
Buying builds equity and stabilizes costs if you’ll stay for many years. Leasing offers flexibility and keeps cash free for growth.
Next Moves
Start by running a simple lease-versus-buy analysis and pulling together your financial documents. Then speak with a lender experienced in SBA and commercial loans to understand what you can realistically afford. With strong preparation, the right commercial real estate financing can give your business a permanent home and a valuable asset that grows with you.