Track lease amendments systematically with Lextract. Extract modified terms from each amendment, compare against original provisions, and determine current lease terms with confidence.
By Angel Campa, Founder · Updated March 2026
Commercial leases are frequently amended over their lifetime — sometimes three, five, or even ten times. Each amendment modifies specific provisions while leaving others unchanged, creating a layered document trail that becomes increasingly difficult to interpret. Determining the current state of any given lease term requires reading the original lease plus every amendment in sequence. Missing an amendment that modified the escalation rate or changed the renewal terms can lead to incorrect billing, missed deadlines, and misinformed decisions.
Lextract processes each amendment as a standalone document, extracting the modified terms into the same 126-field structure. By comparing the extraction of the original lease against each amendment, users can see exactly which fields were changed and when. This creates a clear audit trail of lease modifications without needing to re-read every document. For leases with many amendments, this systematic approach is far more reliable than manual tracking.
Manual Process
2-4 hours per amendment
With Lextract
Under 3 minutes per amendment
Time Saved
96% time reduction
Upload Original and Amendments
Upload the original lease and each amendment as separate documents. Lextract processes each independently.
Extract Modified Terms
Review the extraction for each amendment, noting which of the 125+ fields contain data indicating modified provisions.
Track Changes Over Time
Compare extractions chronologically to build a complete picture of how the lease terms have evolved from the original agreement through each amendment.
Determine Current Terms
Identify the most current version of each provision by applying amendment modifications in sequence against the original lease extraction.
Export Amendment Summary
Download a structured summary showing original terms, modified terms, and the amendment that made each change.
Lextract extracts each amendment to the same 126-field schema as the original lease. By comparing the fields that contain data in the amendment extraction against the original, you can identify exactly which provisions were modified. Fields not addressed by the amendment will typically not appear in the amendment extraction.
Upload each document separately and Lextract will extract them all. You can then review them in chronological order to track the evolution of terms. The cost is $20 per document, so a lease with 5 amendments would cost $120 total for the original plus all amendments.
Lextract extracts each document independently. To determine current terms, you would compare extractions in chronological order, with each amendment's terms superseding the prior version. The structured format makes this comparison straightforward in Excel.
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Upload your lease PDF and get 125+ structured fields extracted in minutes. Perfect for amendment review. Just $20 per lease.
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