Real Estate Due Diligence Checklist: 50+ Items to Verify Before Closing
Due diligence is the difference between a great investment and an expensive mistake. It's the investigation period — usually 30-60 days after going under contract — where you verify everything the seller told you, uncover things they didn't, and confirm that the deal is actually what you think it is.
Skip due diligence, and you will get burned. An undisclosed foundation issue, an environmental contamination, a rent roll full of below-market leases that tenants refuse to renegotiate — these aren't hypotheticals. They happen constantly to investors who "fell in love" with a deal and rushed to close.
This checklist covers every category of due diligence for residential and commercial investment properties. Use it systematically — every item, every deal.
1. Financial Due Diligence
📊 Income & Expense Verification
- Request 2-3 years of actual P&L statements (not pro forma projections)
- Request 12 months of bank statements showing rental deposits
- Verify the rent roll: unit numbers, tenant names, lease terms, monthly rents, deposit amounts
- Compare rent roll to actual bank deposits — do they match?
- Request copies of ALL leases and verify terms match the rent roll
- Identify any concessions, free rent periods, or side agreements
- Review vacancy history for the past 24 months
- Verify utility expenses: request 12 months of utility bills (water, electric, gas, trash)
- Review property tax bills for current year and previous 2 years
- Verify insurance costs: request the current policy and premium
- Review all service contracts: landscaping, pest control, cleaning, etc.
- Check for any outstanding liens, judgments, or assessments
- Verify HOA fees and any pending special assessments (if applicable)
🔑 Rule of thumb: If you can't verify at least 90% of the seller's claimed income through bank statements and leases, walk away or renegotiate the price significantly.
2. Physical Due Diligence
🏗️ Property Inspection
- Hire a licensed property inspector — full inspection report
- Roof: age, condition, remaining life, any patches or repairs
- Foundation: cracks, settling, water intrusion, structural issues
- HVAC systems: age, condition, maintenance records, remaining life
- Plumbing: pipe material (copper, PEX, galvanized, polybutylene), water pressure, sewer line condition
- Electrical: panel capacity, wiring type (copper vs. aluminum), code compliance
- Water heater(s): age, capacity, condition
- Windows: age, condition, single vs. double pane, seals intact
- Siding/exterior: condition, material, any damage or rot
- Parking lot/driveway: condition, drainage, last repaved
- Landscaping and drainage: grading away from foundation, drainage issues
- Pest inspection: termites, wood-destroying organisms, rodent evidence
- Mold inspection (if any signs of water damage)
- Interior of EVERY unit: don't trust the seller's "all units are in good condition"
- Common areas: condition, ADA compliance, fire safety
- Appliances: age and condition of all provided appliances
For multifamily properties (20+ units), also get a Property Condition Assessment (PCA) from an engineering firm. This provides a detailed capital expenditure forecast for the next 10+ years.
3. Legal Due Diligence
⚖️ Legal & Title Review
- Title search: verify clear title, no undisclosed liens or encumbrances
- Survey: verify property boundaries, easements, encroachments
- Zoning verification: confirm current use is legally permitted
- Certificate of occupancy: current and valid
- Building permits: were all improvements properly permitted and inspected?
- Code violations: check with city/county for any open violations
- Pending litigation: is the seller involved in any lawsuits related to the property?
- Tenant disputes: any pending or recent evictions, complaints, or legal actions?
- Rent control/stabilization: does the property fall under any rent control ordinances?
- HOA documents review: CC&Rs, bylaws, financial statements, meeting minutes (if applicable)
- Seller disclosures: review all required seller disclosure forms
4. Environmental Due Diligence
🌿 Environmental Assessment
- Phase I Environmental Site Assessment (ESA) — required for commercial, recommended for older residential
- Lead paint disclosure (required for pre-1978 buildings)
- Asbestos assessment (common in pre-1980 buildings: insulation, tiles, siding)
- Radon testing (especially in basements and ground-floor units)
- Underground storage tanks (check historical use of the property)
- Flood zone check: is the property in a FEMA flood zone?
- Soil contamination (if the site was previously industrial or gas station)
- Wetlands delineation (if undeveloped land is involved)
⚠️ Environmental issues can be deal-killers. A Phase I ESA costs $2,000-$5,000 but can save you from six-figure cleanup liabilities. Never skip it on commercial properties.
5. Market Due Diligence
📈 Market Analysis
- Comparable rents: what are similar units renting for within 1 mile?
- Comparable sales: what have similar properties sold for recently?
- Vacancy rates: what's the market vacancy rate in this submarket?
- Population trends: is the area growing or declining?
- Employment trends: major employers, job growth, diversification
- Crime statistics: check local crime maps and trends
- School ratings: affects rental demand for family units
- New construction pipeline: are competitors building nearby?
- Neighborhood trajectory: is the area improving or declining?
- Walk score / transit access: affects desirability
6. Tenant Due Diligence
👥 Tenant Analysis
- Review all current leases — terms, expiration dates, renewal options
- Tenant payment history: any delinquencies or late patterns?
- Review tenant files: screening documentation, applications, ID
- Estoppel certificates: have each tenant confirm their lease terms, rent amount, deposit, and any promises made by the seller
- Section 8 tenants: verify HAP contracts, inspection history, voucher details
- Tenant complaints: any unresolved maintenance issues or disputes?
- Month-to-month tenants: how many? These are either opportunity (raise rents) or risk (they can leave)
- Below-market leases: identify leases significantly below market — can you raise rent at renewal?
7. Insurance Due Diligence
🛡️ Insurance Review
- Get insurance quotes BEFORE closing — some properties are uninsurable or prohibitively expensive
- Check claims history: request a CLUE report on the property
- Flood insurance: required if in a flood zone, can be very expensive
- Umbrella policy: do you need additional liability coverage?
- Rent loss coverage: protects income if the property becomes uninhabitable
- Verify the property meets insurability requirements (roof age, electrical, plumbing)
Due Diligence Timeline
A typical 45-day due diligence period should look like this:
- Days 1-7: Request all documents from the seller (financials, leases, maintenance records, permits). Schedule inspections.
- Days 7-14: Receive and review documents. Complete physical inspection. Order Phase I ESA, survey, title search.
- Days 14-28: Deep analysis of financials. Walk every unit. Interview on-site staff. Send estoppel certificates to tenants. Review inspection reports.
- Days 28-38: Receive Phase I, survey, title commitment. Address any red flags. Negotiate credits or price adjustments for issues discovered.
- Days 38-45: Final decision. If green light, waive contingencies. If too many issues, renegotiate or walk away.
Red Flags That Should Make You Walk Away
- Seller refuses to provide financials or bank statements: What are they hiding?
- Rent roll doesn't match bank deposits: The income is fabricated or tenants aren't paying.
- Major structural issues: Foundation problems, severe water damage, or environmental contamination can cost more than the property is worth.
- Deferred maintenance exceeds your budget: If the property needs $200K in immediate repairs and your business plan only accounted for $50K, the deal doesn't work.
- Title issues that can't be resolved: Unresolved liens, boundary disputes, or missing heirs on the title.
- Zoning non-compliance: If the property's current use isn't legally permitted, you could be forced to close or retrofit.
💡 The best deals you'll ever do are the ones you don't do. Walking away from a bad deal isn't losing — it's protecting your capital for the right deal.
Due Diligence Costs
Budget for these costs during your due diligence period:
- Home inspection: $300-$600 (single-family), $800-$2,000 (multifamily)
- Phase I ESA: $2,000-$5,000
- Survey: $400-$2,000
- Appraisal: $400-$5,000+ (lender typically requires this)
- Title search: $200-$500
- Attorney review: $500-$2,500
- Pest inspection: $100-$300
- Sewer scope: $150-$400
Total budget: $2,000-$5,000 for residential, $10,000-$25,000 for commercial/multifamily. It's a small price compared to discovering a $100K problem after closing.
Master Property Acquisitions
The PropertyCEO Growth Playbook covers due diligence, deal analysis, and scaling strategies for property managers and investors.
Get the complete playbook with 50+ templates → $197 (30-day guarantee)