Investor Due-Diligence Checklist

Investor due diligence in plain English

Investor due diligence is the organized review of the property, legal use, title, tenants, income, expenses, insurance, condition, financing, value, capital needs, and unresolved questions before the buyer decides. The exact work depends on the property, contract, lender, location, and professional advice.

How to use this checklist

Property identity and legal use

• Match the street address, parcel identification, legal description, and property records.
• Compare advertised, occupied, permitted, and legally recognized unit counts.
• Review zoning, land use, certificates, licenses, permits, and local occupancy records.
• Identify accessory spaces, converted garages, efficiencies, additions, or commercial uses.
• Confirm unresolved legal-use questions with the attorney and local authority.

Use the legal-unit-count guide before treating every occupied space as lawful rental income.

Title, survey, and contract review

• Review title commitment, exceptions, liens, easements, restrictions, and recorded documents.
• Compare the survey with fences, buildings, access, parking, encroachments, and improvements.
• Track contract deadlines, deposits, financing, inspection rights, notices, extensions, and closing conditions.
• Route contract, title, survey, entity, and legal-right questions to the attorney and closing team.

Tenants, leases, deposits, and privacy

• Match each occupied unit with a current lease, renewal, amendment, ledger, and deposit record.
• Review month-to-month tenancies, concessions, payment plans, notices, disputes, and missing files.
• Confirm security-deposit and advance-rent balances, account handling, credits, and transfer records.
• Review only information needed for legitimate due diligence and protect tenant personal data.
• Do not treat tenants as obstacles or rent lines; legal rights and human dignity remain part of the review.

Use the existing-tenants guide and deposit-transfer guide.

Rent roll and income verification

• Compare rent roll, signed leases, amendments, tenant ledgers, receipts, bank deposits, and management statements.
• Separate scheduled, billed, collected, recurring, market, prepaid, and other income.
• Identify concessions, free rent, arrears, bad debt, collection loss, and unsupported deposits.
• Verify parking, laundry, storage, pet, and utility-reimbursement income separately.
• Build a lease-expiration schedule and identify concentrated rollover.

Continue with the rental-income verification guide and rent-roll guide.

Vacancy, concessions, and collections

• Separate physical vacancy from economic vacancy.
• Identify offline, renovation, employee, model, owner-use, or legally unavailable units.
• Compare current occupancy with historical vacancy, concessions, collections, and turnover.
• Test a supported base case and a cautious case.

Use the vacancy-allowance guide.

Operating expenses, taxes, insurance, and utilities

• Match expense summaries to bills, contracts, statements, tax records, insurance documents, and management reports.
• Review property taxes using post-purchase assumptions rather than the seller’s bill alone.
• Obtain current insurance information, loss history when available, deductibles, exclusions, inspections, and eligibility conditions.
• Map owner-paid and tenant-paid utilities, master meters, submeters, reimbursements, and shared services.
• Separate recurring operations from debt service, capex, reserves, depreciation, and income taxes.

Use the operating-expenses guide and utilities-and-metering guide.

Permits, code, and local records

• Review permit history, open permits, expired permits, final inspections, code cases, liens, and unsafe-structure records.
• Compare visible improvements with permit and property records.
• Ask the local authority what remains open; do not infer approval from age or occupancy.
• Review flood, drainage, coastal, environmental, and local resilience records where relevant.

Use the permit-history guide.

Physical condition and specialist inspections

• Review roof, structure, drainage, plumbing, sewer, electrical, HVAC, life safety, windows, exterior, interiors, and site systems.
• Use the appropriate inspector, contractor, engineer, environmental professional, or WDO professional.
• Document scope limitations and systems that were inaccessible, not operated, or outside the inspection.
• Connect condition findings to insurance, occupancy, lender, repair, and reserve questions.

Relevant guides include cast-iron plumbing, electrical risk, HVAC age, and WDO inspections.

Repair estimates

• Compare scope, quantity, material, labor, permits, access, exclusions, contingencies, and schedule.
• Separate inspection observations from contractor pricing and engineering conclusions.
• Do not average unlike estimates merely to create one comfortable number.
• Track which work is immediate, near term, optional, lender-required, or legally required.

Use the repair-estimate guide.

Capital expenditures and reserves

• List major systems, age, condition, useful-life uncertainty, replacement scope, and current pricing support.
• Separate routine repairs from major capital work.
• Compare owner reserves with lender-required reserves and appraisal assumptions.
• Test whether the buyer has enough liquidity for immediate work, operating shortfalls, deductibles, and future replacements.

Use the reserves-and-capex guide.

Financing and lender conditions

• Confirm loan amount, rate, term, amortization, debt service, points, fees, escrows, reserves, and recourse.
• Track lender-required repairs, reports, deposits, insurance, environmental review, and closing conditions.
• Do not treat a term sheet, prequalification, or preliminary discussion as final approval.
• Test weaker income, higher expenses, changed insurance, and repair needs against lender coverage.

Fannie Mae multifamily guidance uses income analysis, property-condition assessments, environmental review, insurance requirements, and third-party reports as separate underwriting components. The lender chooses what applies to the actual loan.

Appraisal and value

• Review the appraisal’s property identity, legal use, condition assumptions, income, expenses, comparable data, and value date.
• Identify extraordinary assumptions, hypothetical conditions, repair requirements, and unsupported differences from property records.
• Do not select a value conclusion only because it is the highest.
• Route valuation-method and appraisal-standard questions to the appraiser and lender.

NOI, DSCR, cash flow, cap rate, and cash-on-cash return

• Verify effective income and operating expenses before relying on NOI.
• Keep debt service outside NOI and within financing and cash-flow analysis.
• Confirm the lender’s underwritten cash-flow and DSCR treatment.
• Keep cap rate generally unleveraged and cash-on-cash return financing-sensitive.
• Separate current cash yield from appreciation, principal paydown, taxes, refinance proceeds, and total return.

Use the NOI guide, cash-on-cash guide, and metric-comparison guide.

Liquidity and scenario testing

• List cash needed for closing, deposits, repairs, reserves, deductibles, vacancy, and operating shortfalls.
• Test base and cautious cases for rent, vacancy, collections, taxes, insurance, utilities, repairs, financing, and capital work.
• Identify which assumptions create the largest change in decision readiness.
• Do not assume refinance, appreciation, rent growth, or sale proceeds will solve an underfunded plan.

Fact vs. estimate vs. assumption vs. unresolved question

Professional-role matrix

Final due-diligence checklist

• Property identity and legal use verified or clearly unresolved.
• Title, survey, contract, deadlines, and closing conditions reviewed.
• Tenant, lease, deposit, privacy, and transfer records reviewed.
• Rent roll and rental income tested against source records.
• Vacancy, concessions, delinquency, and collection loss supported.
• Operating expenses, taxes, insurance, utilities, and management costs supported.
• Permits, code, local records, and visible improvements compared.
• Physical condition and specialist reports reviewed with limitations.
• Repair estimates compared by scope, not headline price.
• Capital expenditures, reserves, deductibles, and liquidity tested.
• Loan terms, lender conditions, appraisal, and insurance requirements reviewed.
• NOI, DSCR, cash flow, cap rate, and cash-on-cash return use consistent inputs.
• Facts, estimates, assumptions, professional findings, and unresolved questions labeled.
• Tenant dignity and data privacy protected.
• Decision deadlines and unresolved items assigned to a person and next step.

Final decision-readiness review

Continue the investor journey