Due DiligencePDF, Excel

Due Diligence Checklist

A structured due diligence checklist for commercial real estate acquisitions, focusing on lease review, rent roll verification, and risk identification. This checklist covers everything an acquirer needs to verify during the lease review phase of a property acquisition or portfolio purchase. It pairs with rent roll analysis to surface economic exposure before closing.

By Angel Campa, Founder · Updated March 2026

Who Uses This & When

Used by acquisition teams, real estate attorneys, and investors during the due diligence period following a letter of intent on a commercial property or portfolio acquisition.

Checklist Items (14)

  1. 1Confirm rent roll accuracy — verify all tenants, spaces, and rent amounts against executed leases
  2. 2Identify all leases expiring within 24 months of closing and assess rollover risk
  3. 3Review all outstanding tenant improvement allowances and landlord obligations
  4. 4Verify all security deposits are on hand and confirm form (cash, LC, or bond)
  5. 5Identify any below-market leases that may affect appraised value
  6. 6Review all renewal options and assess likelihood of exercise based on market rents
  7. 7Check for any ROFR or ROFO provisions that could affect title transfer
  8. 8Identify co-tenancy clauses and assess whether current anchor tenants satisfy triggers
  9. 9Review all exclusive use clauses for conflicts with planned future tenants
  10. 10Verify all CAM reconciliations have been completed through the current period
  11. 11Confirm no outstanding landlord default notices or tenant litigation
  12. 12Review all assignment consents — verify all transfers were properly documented
  13. 13Identify any subordination, non-disturbance, and attornment (SNDA) agreement gaps
  14. 14Confirm all lease amendments, extensions, and modifications are accounted for in the rent roll

Related Lease Fields

Lextract automatically extracts these fields from your lease PDF — eliminating the manual data collection underlying this checklist.

Frequently Asked Questions

How many leases should I review during due diligence?

All leases should be reviewed. For large portfolios, a tiered approach is common: full abstraction for anchor and major tenants (typically leases representing 80% of revenue), and a summary review for smaller tenants. Lextract makes it cost-effective to abstract all leases regardless of portfolio size.

What is the most common due diligence oversight in lease review?

The most common oversight is failing to identify all outstanding landlord obligations — particularly unfunded TI allowances, deferred maintenance commitments written into lease side letters, and unexercised expansion options that the seller neglected to disclose. These represent real capital calls post-closing.

How does co-tenancy risk affect acquisition pricing?

Co-tenancy clauses allow tenants to pay reduced rent or terminate their lease if an anchor tenant vacates. An acquisition with a single anchor tenant with multiple co-tenancy-linked leases carries concentrated risk. Buyers typically apply a discount to the purchase price reflecting the probability-weighted impact of co-tenancy triggers.

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