Commercial Mortgages, Bridge Loans, Construction Financing, and DSCR Lending Explained
Commercial real estate lending operates on entirely different terms than residential finance. The properties are different, the underwriting is different, the timelines are different, and the mistakes are more expensive. This guide covers commercial lending in the depth that serious commercial real estate borrowers need.
The fundamental difference between commercial and residential lending is what the underwriting focuses on. Residential lending primarily evaluates the borrower's personal financial capacity — income, credit score, debt-to-income ratio. Commercial lending primarily evaluates the property's income-generating capacity — net operating income, vacancy rates, lease terms, and the resulting debt service coverage ratio.
This distinction has important implications. A borrower with modest personal income but who owns a well-performing commercial property can often secure commercial financing that would be unavailable to them in the residential market. Conversely, a high-income borrower purchasing a vacant commercial property cannot rely on their personal income to qualify — the property has to carry its own weight.
Commercial loan terms also differ significantly from residential. Amortization periods are commonly 25-30 years, but loan terms are often 5-10 years, meaning the loan comes due for refinance or repayment well before it would be fully amortized. Borrowers need to plan for this maturity event from the day they close.
Traditional commercial mortgages are available from banks, insurance companies, credit unions, and agency lenders. Key structural elements to understand include:
Commercial bridge loans serve a specific and important function: they provide financing for properties that are not yet in a condition to qualify for permanent commercial financing. A property being repositioned, undergoing significant renovation, or not yet at stabilized occupancy typically cannot qualify for a long-term commercial mortgage. A bridge loan provides financing during the transition period.
Bridge terms are typically 12-36 months. Rates are higher than permanent financing. The exit strategy — what happens when the bridge loan matures — must be clearly defined and credible before any responsible lender will commit bridge capital.
Common bridge loan exit strategies include: completion of renovation and lease-up to stabilization, then refinance to permanent financing; or sale of the repositioned asset. Both are valid; both require realistic underwriting of the timeline and the property's post-stabilization value.
Commercial construction loans fund ground-up development. The structure requires careful coordination with the project's construction timeline, contractor agreements, and permanent financing plan. Construction funds are released in draws as construction progresses, with an inspector verifying work completion before each draw.
Construction lending carries higher risk than permanent financing because the income-producing property does not yet exist. Lenders compensate for this with higher rates, conservative LTC (loan-to-cost) ratios, strong personal guarantee requirements, and detailed project monitoring. Borrowers who have successfully completed comparable projects get meaningfully better terms than first-time developers.
The transition from construction financing to permanent financing — the "perm takeout" — must be planned from the beginning. Construction lenders want evidence that permanent financing is available and achievable before they commit to the construction loan.
Commercial Mortgage-Backed Securities (CMBS) loans are commercial mortgages that are pooled and sold to bond investors. For borrowers, CMBS offers several potential advantages: competitive fixed rates, high LTV availability for strong assets, and non-recourse structure on qualifying deals.
The trade-offs are significant. CMBS loans have strict prepayment provisions — defeasance (replacing the loan collateral with government securities) or yield maintenance (paying the lender the present value of remaining interest payments) — that make early exit very expensive. CMBS loans are also serviced by a master servicer and a special servicer (if there are problems), creating a bureaucratic structure that limits flexibility during the loan term.
CMBS is generally appropriate for larger, stable, well-leased commercial assets where the borrower is confident in a long hold period. It is not appropriate for transitional, value-add, or development plays.
The Group's ethical lending standards apply as fully to commercial lending as to residential. Commercial loan documents are significantly more complex than residential mortgage documents — all the more reason that full disclosure and borrower understanding are non-negotiable requirements. A commercial borrower who does not fully understand the prepayment structure, the personal guarantee provisions, or the default triggers in their loan agreement is a borrower who has not been served ethically by their lender.
The Group's resources on ethical lending standards and bad loan warning signs are directly applicable to commercial transactions. And the commercial lending guide in the blog covers the full commercial loan process, underwriting, and requirements in detail.
The Group's resources cover every aspect of commercial real estate finance.
Commercial Financing Guide 2026 Commercial Lending Guide