Every commercial real estate transaction of any significance involves financing — and understanding what commercial real estate loans are, how they work, and which type fits your situation is foundational knowledge for any investor, business owner, or developer active in this market. I’ve guided clients through commercial financing decisions across all property types and deal sizes, and the pattern I see most often is the same: buyers who understand their financing options before they find a property make better decisions, move faster, and close more deals than those who figure it out as they go.
Here’s a comprehensive, practical guide to what commercial real estate loans are and how to navigate them.
The Basic Definition
A commercial real estate loan is a mortgage secured by commercial property — any income-producing or business-use real estate that isn’t a single-family home or small residential property. Commercial real estate loans are used to finance the acquisition, refinancing, construction, or rehabilitation of commercial properties including office buildings, retail centers, industrial facilities, multifamily apartment communities, hotels, and special-use assets.
The fundamental difference between commercial real estate loans and residential mortgages is the underwriting emphasis. Residential mortgages are underwritten primarily on the borrower’s personal creditworthiness and income. Commercial real estate loans are underwritten primarily on the property’s income-generating capacity — specifically its ability to service the debt through its net operating income.
The Primary Types of Commercial Real Estate Loans
Conventional Commercial Mortgages
The most common commercial real estate loan type — offered by banks, credit unions, insurance companies, and other institutional lenders. Key characteristics:
- Loan-to-value: Typically 65–75% of appraised value
- Debt service coverage ratio: Most lenders require DSCR of 1.20x to 1.35x or higher
- Rates: Fixed or floating, typically benchmarked to SOFR or Treasury rates plus a spread
- Terms: Loan terms of 5–10 years with amortization periods of 20–30 years
- Recourse: Most conventional commercial loans are full recourse to the borrower
Conventional commercial mortgages work best for stabilized, income-producing properties with reliable cash flow and borrowers with strong financial profiles.
SBA 504 Loans
The Small Business Administration 504 loan program is specifically designed for owner-occupied commercial real estate — properties where the borrowing business occupies at least 51% of the space. Key advantages:
- Down payment as low as 10% for eligible owner-occupants
- Below-market fixed interest rates on the SBA debenture portion
- Long amortization periods (20–25 years) reducing monthly payments
- Loan amounts up to $5.5 million for standard projects
In my experience, the SBA 504 is the single most powerful financing tool available to small business owners purchasing commercial real estate they’ll occupy. The combination of low down payment and favorable rates dramatically improves the economics compared to conventional financing.
SBA 7(a) Loans
The SBA 7(a) program is more flexible than the 504 and can finance commercial real estate alongside working capital, equipment, and other business purposes. Maximum loan amounts of $5 million, longer repayment terms, and flexible use of proceeds make 7(a) loans suitable for a broad range of small business financing needs including commercial property acquisition.
CMBS Loans (Commercial Mortgage-Backed Securities)
CMBS loans are commercial mortgages originated by lenders and pooled into securities sold to institutional investors. Key characteristics:
- Typically available for larger loan amounts ($2 million and above)
- Competitive fixed rates for qualifying, stabilized assets
- Non-recourse structure — lender’s security limited to the property
- Strict prepayment provisions (defeasance or yield maintenance)
- Limited flexibility for modifications or early payoff
CMBS loans work well for stabilized, income-producing assets with long-term leases where the borrower has a defined hold period and doesn’t anticipate needing to modify or prepay the loan.
Bridge Loans
Bridge loans provide short-term financing — typically 12 to 36 months — for properties in transition. They’re used when:
- The property doesn’t yet qualify for permanent financing due to vacancy or lease-up
- The borrower needs to close quickly before permanent financing can be arranged
- A value-add business plan requires flexibility during execution
Bridge loans carry higher interest rates than permanent financing — reflecting the transitional risk — and are typically interest-only during the bridge period. Exit into permanent financing is planned from day one.
Construction Loans
Construction loans finance the cost of building commercial improvements. They’re structured as revolving lines of credit that draw down as construction progresses and typically convert to permanent financing upon project completion. Construction loans carry higher rates than permanent debt and require detailed project budgets, construction timelines, and experienced development teams.
Mezzanine Debt and Preferred Equity
For borrowers seeking leverage above what senior lenders will provide, mezzanine debt and preferred equity fill the gap between senior debt and common equity. These instruments carry higher rates reflecting their subordinate position and are most commonly used in larger development and value-add transactions.
Key Underwriting Metrics Lenders Evaluate
Debt Service Coverage Ratio (DSCR)
DSCR = Net Operating Income ÷ Annual Debt Service
Most lenders require a minimum DSCR of 1.20x to 1.35x — meaning the property generates at least 20–35% more income than needed to cover the debt payments. Higher DSCR provides a buffer against vacancy or income reduction.
Loan-to-Value (LTV)
LTV = Loan Amount ÷ Appraised Property Value
Lower LTV ratios mean more borrower equity and less lender risk. Most commercial lenders cap LTV at 65–75% for stabilized properties.
Debt Yield
Debt Yield = Net Operating Income ÷ Loan Amount
Increasingly used by lenders as a cap rate-independent underwriting metric that prevents overleveraging in compressed cap rate environments.
How to Choose the Right Commercial Real Estate Loan
The right loan depends on:
- Property type and stabilization status: Stabilized assets qualify for conventional and CMBS; transitional assets need bridge financing
- Owner-occupant vs. investment: SBA programs are exclusive to qualifying owner-occupants
- Loan size: SBA programs cap at $5.5 million; CMBS and institutional loans start at $2 million or higher
- Hold period and prepayment needs: Avoid heavy prepayment penalties if you may exit before maturity
- Rate environment and risk tolerance: Fixed rates provide certainty; floating rates carry reinvestment risk
If you want guidance on which commercial real estate loan is right for your specific transaction, I’m Matt Bingaman. Contact me today and let’s structure financing that fits your asset, your business plan, and your timeline.