Before a bank funds a commercial real estate loan, its underwriters work through a lender due diligence checklist. It verifies four things: you, the property’s income, the loan’s numbers, and the collateral. You hand over a borrower file. It typically includes three years of tax returns, a personal financial statement, entity documents and a debt schedule. The bank then re-underwrites the property’s rent roll and trailing-twelve-month (T-12) statements. It tests the deal against its DSCR, LTV and debt yield guidelines. It also orders its own appraisal, environmental review and title work. Nothing funds until each item clears or the bank formally waives it.
This guide walks through the lender due diligence checklist from the borrower’s side of the desk. It also covers what the bank asks for, what it orders itself, and how to prepare. Every threshold below is a commonly cited lender-practice range, not a universal rule. Lenders set their own guidelines by property type and sponsor strength.
Lender Due Diligence vs. Buyer Due Diligence: Two Different Checklists
Buyer due diligence and lender due diligence look similar on paper, but they answer different questions. Your due diligence as a buyer decides whether to buy the property and at what price. The lender’s decides whether the bank will fund the loan and on what terms. You inspect the property to protect your equity; the underwriter inspects the deal to protect the bank’s loan.
The practical differences matter. A buyer works inside a contract diligence period and can walk away or renegotiate. A borrower faces underwriting, credit approval and conditions to funding. The failure mode is a loan delayed, resized, repriced or denied late in the process. The reports differ too. A buyer orders inspections for their own protection. The lender orders the appraisal and environmental review itself from its own approved vendors. You usually pay the fees.
There is also a regulatory reason the checklist is so rigid: federal examiners expect banks to follow the prudent underwriting practices set out in the OCC’s Comptroller’s Handbook on Commercial Real Estate Lending.
If you are still evaluating the property itself, start with our buyer-side commercial real estate due diligence checklist template — this guide covers the separate review your lender runs before it funds the loan.
The Lender Due Diligence Checklist at a Glance
Here is the full commercial real estate lender due diligence checklist in one table — everything a bank checks, orders or verifies before funding, grouped the way a loan file is organized. Real loan-file checklists, such as the FHLBank Atlanta Collateral Verification Review checklist, follow this same structure.
The Summary Table
| Area | What the lender checks | What you provide or what happens |
|---|---|---|
| Borrower file | Credit history, net worth, liquidity, experience | Personal financial statement; typically 3 years of personal tax returns |
| Guarantors | Every owner of 20% or more | Personal guarantee plus personal returns and financial statement from each guarantor |
| Entity and authority | The borrowing entity exists and can legally borrow | Entity documents, operating agreement, borrowing resolution |
| Existing debts | Other obligations competing for your cash flow | Business debt schedule; returns verified against an IRS transcript (Form 4506-C) |
| Property financials | Reported income is real and repeatable | Rent roll, T-12 statements, leases, tax and insurance bills |
| Loan metrics | DSCR, LTV, debt yield, global cash flow | Calculated by the underwriter from verified income |
| Appraisal | Value supports the loan amount | Ordered by the lender; state-certified appraiser, USPAP standards; you pay the fee |
| Environmental | No contamination liability on the collateral | Phase I ESA ordered by the lender; Phase II if a problem is flagged |
| Title and survey | The bank gets a first-priority lien | Title commitment and Schedule B reviewed; ALTA loan policy at closing |
| Flood | Flood-zone status and coverage | Flood zone determination; flood insurance evidence if in a high-risk zone |
| Insurance | Collateral protected, lender covered | Hazard policy naming the lender as mortgagee/loss payee |
| Leases | Tenant income is enforceable and durable | Estoppel certificates and SNDAs on major leases, as lender requirements |
| Conditions to funding | Approved file matches the closed file | Final title policy evidencing lien position, signed note, recorded mortgage, credit memo |
The sections below explain each block of the lender due diligence checklist. They also cover what the underwriter is really looking for, and where borrowers usually get tripped up.
The Application Package: What the Bank Asks for First
The first request list for the lender due diligence checklist arrives before an underwriter sees your deal. It is mostly about you rather than the property. Expect the loan application, entity and organizational documents (articles, operating agreement, borrowing resolution), and a personal financial statement. Expect also a business debt schedule listing every loan, payment and maturity date.
Tax returns are the heaviest item. The standard ask is three years of business returns. It is also three years of personal returns for every owner of 20% or more. You will also sign consent for the lender to order an IRS tax transcript on Form 4506-C. That check means your returns must match what the IRS has on file. Amended or inconsistent returns are one of the fastest ways to stall a file.
The SBA version is more form-driven: SBA Form 1919 (Borrower Information Form), Form 413 (Personal Financial Statement) and, where required, Form 912, layered on top of the same returns and entity documents, per the Commercial Loan Direct SBA loan application checklist. Either way: core financials first, deal-specific items during underwriting. You do not need every document to apply, but the file cannot close with gaps.
Borrower and Guarantor Review: Credit, Net Worth, Liquidity and Experience
Underwriters summarize the borrower review with the 5 Cs of credit: capacity, capital, collateral, conditions and character. Capacity, your cash flow against debt service, carries the most weight. In practice the bank examines your credit history, net worth relative to the loan size, and post-closing liquidity. Post-closing liquidity means cash left after down payment and reserves. The bank also examines your experience with this type of property.
One point surprises many first-time borrowers: the review covers more than the property or the borrowing entity. Underwriters commonly calculate a global DSCR. It combines your business and personal income and obligations. A strong property can still struggle if the sponsor’s other debts consume the cash flow.
That global view is why guarantors matter so much. On most commercial and SBA loans, every owner of 20% or more must sign a personal guarantee, which is why the bank reviews personal finances as closely as business finances. A single weak or uncooperative guarantor can hold up the whole file — so line up every guarantor’s documents at application.
Property Financials: How the Lender Verifies Your Rent Roll, T-12 and NOI
The lender does not underwrite the income you claim — it underwrites the income it can verify. The core documents are the current rent roll, the T-12 statements and the leases. The underwriter’s first job is to cross-check them against each other and the offering memorandum.
Underwriters investigate inconsistencies; they do not average them away. If the rent roll shows full occupancy but the T-12 shows lower collections, expect questions. If the rent roll lists rents no lease supports, the underwriter uses the lower, documented figure. Most lenders also apply their own vacancy assumption regardless of current occupancy.
Next, the underwriter normalizes NOI. The underwriter removes one-time income, adjusts below-market related-party rents, and adds back omitted expenses. Omitted expenses include a market-rate management fee, replacement reserves, and real tax and insurance figures. The resulting lender’s NOI is almost always more conservative than the broker’s pro forma. The next section builds every metric on it. Tenant concentration matters too. One tenant paying 60% of the rent is a different credit risk than the same income from ten tenants.
The Numbers That Decide the Loan: DSCR, LTV and Debt Yield
Three ratios decide most loans in the lender due diligence checklist.
DSCR (debt service coverage ratio) compares NOI to annual debt service. Many conventional lenders look for a minimum DSCR of around 1.20–1.25x. The property earns 20–25% more than its loan payments. Lenders cap LTV (loan-to-value) at roughly 65–75% for most commercial property types. They calculate it on the lesser of appraised value or purchase price. A contract price above appraised value does not raise the loan. Debt yield (NOI divided by the loan amount) is the lender’s downside lens. Lenders commonly cite baselines around 8–10%. It ignores interest rates entirely, which is why lenders watch it.
A quick example: with verified NOI of $120,000 and annual debt service of $96,000, DSCR is exactly 1.25x. That is comfortably in range. A $1,200,000 loan against a $1,800,000 appraised value is 66.7% LTV, with a debt yield of 10% ($120,000 ÷ $1,200,000). But if the appraisal came in at $1,600,000, LTV would jump to 75%. The lender might resize the loan even though DSCR still passes. No single metric approves a loan; the weakest one sets the terms.
Run the numbers the way an underwriter will: our guide to DSCR for rental properties shows the calculation and what lenders count as debt service. These are guidelines that flex with property type and sponsor strength — not guarantees.
The Appraisal: Ordered by the Lender and Built to USPAP Standards
Every lender file needs a current, full appraisal — a required credit document on formal loan-file checklists such as FHLBank Atlanta’s — and the ordering rules are strict. The lender orders it from a state-certified appraiser on its approved panel, the work must comply with USPAP (the Uniform Standards of Professional Appraisal Practice), and for SBA loans the appraisal must name SBA as an intended user and include the sales comparison approach, per the Capital Matrix CDC lender’s guide to the SBA 504 program.
The rule borrowers most often trip over: a borrower-ordered appraisal generally cannot be accepted. The independent appraisal is almost always ordered by the senior lender, per the SBA 504 checklist at SBA-loans.com. If you commissioned an appraisal when you bought the property, expect to pay for a fresh one.
The report values the property as-is; on construction or heavy renovation deals it also gives an as-completed value, and the lender underwrites to the more conservative figure until the work is done. Construction deals add budget review and draw inspections to the list — see how commercial construction loans are underwritten and funded. If value comes in low, the loan is usually resized to the LTV cap rather than denied outright.
Title Commitment, Survey and the Lender’s Title Policy
The lender’s position depends on being first in line, and the title work proves it can be. Early in underwriting, the lender reviews a title commitment. The title company’s promise to insure lists requirements to close. In Schedule B, it lists the exceptions: easements, restrictions, existing liens and other matters the policy will not cover. The underwriter reads Schedule B for anything that impairs lien priority or the property’s use. However, exceptions do not disappear on their own. You must pay off old liens or subordinate them. You must cure unacceptable exceptions or insure over them before funding.
At closing, the commitment converts into an ALTA loan policy. It insures the validity, enforceability and priority of the bank’s lien. This differs from an owner’s policy, which protects your equity. Lenders require the loan policy regardless. SBA 504 closings likewise require title insurance. The final policy becomes part of the permanent loan file.
A current survey supports the title work — typically an ALTA/NSPS survey showing boundaries, easements, encroachments and access. If the survey is old or the property has changed, expect the lender to require a new one.
Environmental Review: Phase I ESA, RECs and When a Phase II Is Required
Environmental diligence protects the lender from owning a cleanup liability if it ever forecloses, and it follows a fixed script. The first step is a Phase I Environmental Site Assessment (ESA). Assessors perform it to the ASTM E1527 standard and the EPA’s All Appropriate Inquiries rule (40 CFR Part 312). That framework supports landowner liability protections under CERCLA.
Ordering and freshness rules are specific. Fannie Mae’s multifamily requirements illustrate lender practice: under its Environmental Due Diligence Requirements (Form 4251), the lender — not the borrower — orders the Phase I, and key components must be conducted or updated within 180 days of loan origination. For SBA 504 real estate transactions, a Phase I is required on every deal and must be less than 12 months old. An old Phase I from a previous transaction rarely satisfies a new lender.
The outcome that changes deals is a Recognized Environmental Condition (REC). It is evidence of a release of hazardous substances or petroleum. Examples include a former gas station, dry cleaner or leaking underground tank on or near the site. A REC usually triggers a Phase II assessment with soil and groundwater sampling before the lender proceeds. Depending on the findings, the lender can delay the loan, condition it on remediation, reprice it or decline it. That is why lenders order the Phase I early. It is also why you should disclose known site history up front.
Property Condition, Flood Determination and Insurance Checks
Three shorter checks round out the collateral review.
Property condition. Many lenders order a property condition assessment or review the inspection for deferred maintenance: roof life, HVAC age, structural issues. Major near-term capital needs may also trigger repair reserves, escrows or a lower loan amount.
Flood determination. Every lender file includes a flood zone determination from a third-party vendor. If any part of the improvements sits in a high-risk flood zone, the lender requires flood insurance. The amount is typically at least equal to the loan balance or the replacement cost of the improvements. Also keep evidence in the file before closing. This is a hard condition, not a negotiation.
Insurance. The lender verifies your hazard insurance. It requires the policy to name the bank as mortgagee and loss payee. Claim proceeds then protect the collateral first. The lender also reviews amounts, deductibles and carrier ratings. A policy that lapses or omits the lender’s interest holds up funding until you correct it. Send your agent the lender’s requirements early — endorsements take days.
Leases Under the Microscope: Estoppels, SNDAs and Rollover Risk
For income-producing property, the leases are the cash flow — so the lender verifies them directly with your tenants. Two documents do most of that work, and checklists list both as lender requirements.
A tenant estoppel certificate asks each major tenant to confirm in writing the lease terms the lender is underwriting. Those terms include rent, expiration, renewal options, deposits and whether the landlord is in default. If a tenant’s estoppel contradicts your lease file — a lower rent, an undisclosed option — the underwriter goes with the tenant’s version. The underwriter keeps that version until you resolve the discrepancy.
An SNDA (subordination, non-disturbance and attornment agreement) is a three-way agreement among lender, landlord and tenant. The tenant subordinates its lease to the mortgage. The lender promises not to disturb the tenant if it forecloses. The tenant agrees to recognize the lender as landlord after foreclosure. Lenders also typically require SNDAs from major tenants. Collecting signed estoppels and SNDAs is often the slowest item on the borrower’s to-do list.
Underwriters also score rollover risk: how much rent expires during the loan term. They also look at the weighted average lease term (WALT) that results. Two major tenants expiring in year two of a ten-year loan is a refinancing problem. The credit memo must address it with reserves, a shorter term or a lower loan amount.
SBA Loans: The Extra Due Diligence Layer
SBA 7(a) and 504 loans run the same lender due diligence as conventional loans, then add a government layer. Expect the SBA forms described earlier — Form 1919, Form 413 and Form 912 where required — plus three years of business and personal tax returns for every 20%-or-more owner, all verified against IRS transcripts, as laid out in the Commercial Loan Direct SBA application checklist.
The 504 program adds a second underwriter: the deal is approved in parallel by the bank (funding the senior loan) and a CDC (Certified Development Company) working with the SBA, so your package must survive two reviews. The CDC’s own lender’s guide restates the extra rules: appraisals and environmental assessments are required on real property financed with 504 proceeds, the appraisal must address SBA as an intended user, and the environmental requirement scales with loan size and the property’s uses. For the 50/40/10 funding structure behind these checks, see how an SBA 504 loan is put together.
SBA Eligibility Tests
Eligibility tests have no conventional equivalent. The property must be owner-occupied: at least 51% of an existing building, or 60% of new construction. The business must fit SBA size standards. Tangible net worth must be under $20 million. Average after-tax net income must be under $6.5 million, per the checklist’s eligibility summary. Borrower equity typically starts at 10%. It rises to 15% for start-ups or single-purpose properties. It rises to 20% where both apply, as typical CDC practice. Timelines stretch accordingly: SBA real estate loans commonly run 60–90 days application to closing, against 45–60 days for conventional loans.
Why Commercial Loans Get Delayed or Denied — and How to Keep Yours Moving
Most lender due diligence problems are borrower-side paperwork problems:
- Inconsistent financials. The rent roll, T-12, tax returns and offering memo tell different stories, and underwriting pauses until they reconcile.
- Stale or incomplete documents. A Phase I older than the lender’s freshness window restarts a review clock. So does an unsigned financial statement. So does a missing guarantor return.
- Metrics that miss. Verified NOI produces a DSCR below the guideline, or a low appraisal pushes LTV past the cap. The usual outcome is a resized loan, not a flat denial, if you can add equity or accept less.
- Title exceptions. Old liens, boundary problems or unacceptable Schedule B items to cure, pay off or insure over.
- Environmental flags. A REC sends the deal to Phase II, adding weeks and sometimes ending it.
- Third-party and tenant delays. Appraisals and environmental reports commonly take 3–4 weeks on SBA timelines, and estoppels and SNDAs move at your tenants’ speed.
The preparation sequence for the lender due diligence checklist that prevents most of it is as follows. First, assemble the borrower file before you apply. Reconcile your rent roll against your T-12 and fix discrepancies first. Run your own DSCR and LTV estimates on conservative numbers. Ask on day one which reports the lender is ordering. Send estoppel and SNDA requests to tenants as soon as the lender confirms its forms. You cannot control the bank’s queue, but your file need never leave it for a missing document.
People Also Ask
Typically entity and borrowing-authority documents, a personal financial statement, three years of business and personal tax returns, a debt schedule, a current rent roll and T-12 statements, and the leases — plus a lender-ordered appraisal, Phase I environmental report and title commitment during underwriting.
Many conventional lenders look for a DSCR around 1.20–1.25x and cap LTV around 65–75% of the lesser of appraised value or purchase price. Both are guidelines that vary by lender and property type — not guarantees of approval.
Typically three years of business returns and three years of personal returns for every owner of 20% or more. The lender verifies them against an IRS transcript obtained with Form 4506-C, so submitted returns must match filed returns.
The lender orders both from its own approved vendors — a borrower-ordered appraisal generally cannot be accepted, a rule explicit for SBA loans — while the borrower normally pays the fees as part of closing costs.
Commonly several weeks of underwriting inside a total window often quoted at 45–60 days for conventional loans and 60–90 days for SBA real estate loans. Third-party reports alone can take 3–4 weeks, and incomplete documents are the most common cause of slippage.
A Recognized Environmental Condition (REC) usually triggers a Phase II assessment with soil and groundwater sampling before the lender will proceed. Depending on the findings, the loan can be delayed, conditioned on remediation, repriced or declined.
Key Takeaways
- Lender due diligence answers one question: will the bank fund this loan? It verifies the borrower, the property’s income, the loan metrics and the collateral.
- Prepare the borrower file first. Include three years of returns, financial statements, entity documents and a debt schedule. Make them all consistent with IRS records.
- Know the typical ranges. DSCR is around 1.20–1.25x. Lenders cap LTV near 65–75% of the lesser of appraised value or purchase price. Debt yield is around 8–10%. These are guidelines, not guarantees.
- The lender orders the appraisal, Phase I environmental and flood determination itself. Lenders generally cannot accept borrower-ordered appraisals. You pay the fees.
- Title, insurance and lease checks are closing conditions. Resolve Schedule B exceptions. Name the lender mortgagee/loss payee. Ask major tenants for estoppels and SNDAs.
- SBA loans add a second layer. It includes extra forms, transcript verification and eligibility tests. For 504 loans, it includes parallel bank and CDC underwriting.
- Most delays are missing or inconsistent documents; a complete, reconciled package is the fastest way to keep a loan moving.
