Key Takeaways
- A structured checklist organized by four pillars (physical, financial, legal, environmental) prevents oversights.
- Each checklist item should have a responsible party, due date, status, and findings summary.
- Financial DD must independently verify every pro forma number—do not accept seller representations at face value.
- Environmental DD (Phase I ESA) is required by most lenders and provides critical legal protection.
A comprehensive due diligence checklist ensures nothing is overlooked during the investigation. This lesson provides the master checklist framework organized by the four pillars, with specific items, responsible parties, and completion criteria. The checklist is designed to be adapted for different property types and deal sizes.
Physical Due Diligence Checklist
Physical DD items include: property inspection by licensed inspector (report all systems: structural, roofing, HVAC, plumbing, electrical, fire safety, elevator), roof condition report with remaining useful life estimate, HVAC assessment with equipment inventory and age, plumbing assessment (supply and waste lines, water heater), electrical panel evaluation, foundation and structural assessment, parking lot and site condition, unit interior condition survey (sample 20-30% of units), ADA compliance review, building code compliance verification, pest and termite inspection, and mold assessment. Each item should have a responsible party (your inspector, a specialist, or your team), a due date, a status (not started, in progress, complete), and a findings summary.
Financial Due Diligence Checklist
Financial DD items include: rent roll verification (compare to estoppel certificates and bank deposits), trailing-12-month operating statement review, year-over-year expense trend analysis (3 years minimum), lease abstract for every lease (terms, rent, deposits, options, restrictions), tenant credit assessment for commercial tenants, accounts receivable aging report, security deposit verification (confirm deposits are held in compliant accounts), vendor contract review (terms, termination provisions, auto-renewals), tax return review for the property entity, utility bill analysis (12 months), insurance claims history (5 years), and CapEx history review (3-5 years). The goal is to independently verify every number in your pro forma and identify liabilities not captured in the operating statements.
| Item | Source | Red Flag | Impact If Missed |
|---|---|---|---|
| Rent roll vs. estoppels | Tenants directly | Discrepancies > 5% | Overpaying based on inflated income |
| T-12 vs. tax returns | Seller/CPA | Significant variance | Hidden expenses or income manipulation |
| Accounts receivable | Seller/PM | AR > 60 days | Non-paying tenants inflate occupancy |
| Vendor contracts | Seller | Auto-renewal, above-market | Locked into costly long-term contracts |
| Insurance claims | Seller/carrier | Frequent water/fire claims | Recurring property problems |
| Security deposits | Seller/PM | Not in separate account | Legal liability, missing funds |
Financial due diligence red flags
Legal and Environmental Checklists
Legal DD items include: title commitment review (identify and resolve all exceptions), ALTA survey (boundary, easements, encroachments, flood zone), zoning verification letter from municipality, certificate of occupancy verification, building permit history review, pending litigation search, HOA/condo document review (if applicable), and compliance with local rental licensing or registration requirements. Environmental DD items include: Phase I Environmental Site Assessment (ASTM E1527-21 standard), follow-up Phase II testing if recommended by Phase I, asbestos survey for pre-1980 buildings, lead-based paint assessment for pre-1978 buildings, radon testing, and mold assessment. Environmental DD is typically required by lenders and provides the "innocent purchaser" defense under CERCLA.
Key Takeaways
- ✓A structured checklist organized by four pillars (physical, financial, legal, environmental) prevents oversights.
- ✓Each checklist item should have a responsible party, due date, status, and findings summary.
- ✓Financial DD must independently verify every pro forma number—do not accept seller representations at face value.
- ✓Environmental DD (Phase I ESA) is required by most lenders and provides critical legal protection.
Sources
Common Mistakes to Avoid
Using a generic checklist without customizing for property type and age
Consequence: Missing property-specific risks (e.g., asbestos in pre-1980 buildings, cast iron plumbing in pre-1975 construction)
Correction: Customize the DD checklist for building age, property type, location, and known risk factors before beginning investigations
Not establishing internal DD deadlines 5 days before the contractual DD deadline
Consequence: Last-minute discoveries leave no time for renegotiation, specialist follow-up, or decision-making
Correction: Set internal deadlines 5 days before the contractual DD expiration to allow time for follow-up and decision-making
Test Your Knowledge
1.What is the purpose of a DD checklist framework?
2.Which DD workstream should be ordered first due to lead time?
3.What is the critical path concept in DD scheduling?