How to Abstract a Commercial Lease Amendment
Amendments change the original lease but aren't always reflected in the base abstract. Here is how to handle amendments correctly.
A written modification to an existing lease that changes one or more terms of the original agreement, executed by both landlord and tenant, without creating an entirely new lease.
Lease amendments are used to document agreed-upon changes during the lease term: extensions, expansions, rent reductions, changes to permitted use, or modifications to common area rights. Each amendment must be read in conjunction with the original lease and all prior amendments — a practice that makes lease abstraction particularly valuable in portfolios with heavily amended leases. The abstract should capture the amendment date, execution parties, and a summary of changed terms. Conflicts between an amendment and the original lease are typically resolved in favor of the amendment as the later-executed document.
Amendments change the original lease but aren't always reflected in the base abstract. Here is how to handle amendments correctly.
What accuracy can you realistically expect from AI lease abstraction tools? We break down field-level accuracy rates, where AI excels, where it struggles, and how to validate output.
Compare the top AI lease abstraction tools for commercial real estate in 2026. We review Lextract, Prophia, Kolena, Leasecake, MRI Software, and more — with pricing, accuracy, and use-case guidance.
Upload a commercial lease PDF and get 125+ structured fields — including all the terms defined in this glossary — extracted in under 3 minutes. $20 per lease.
Upload Your Lease