What Is a Commercial Lease? Key Terms, Types, and What to Watch For
A commercial lease is a legally binding contract between a landlord and a business tenant. Learn the key terms, lease types, and critical clauses before you sign.
By Angel Campa, Founder · Updated March 2026 · Saves 2–4 hours per lease for verification
As leases are amended and lease administration systems change, the lease database can drift from the executed documents. Annual re-abstraction verifies that system data matches current lease terms — catching discrepancies before they affect billing, compliance reporting, or financial statements.
Export current lease terms from your property management system or existing lease database for each active tenant.
Upload each executed lease (including all amendments) to Lextract for fresh extraction.
Run complete extraction on each lease. The re-abstraction captures any amendments that may have been processed since the last abstraction cycle.
Build a comparison between the Lextract-extracted values and your current system records. Flag every field where the values differ.
Correct any discrepancies in the PMS or lease database. Document the changes and their source in the lease file.
Learn about the full integration between Lextract and Microsoft Excel, including supported export formats and critical fields.
View Microsoft Excel integration →Annual re-abstraction is standard best practice. Leases with frequent amendments or complex CAM structures benefit from re-abstraction after each amendment is executed.
Lextract does not automatically compare against previous runs, but you can download both extractions as Excel files and use Excel's comparison tools to identify changed fields.
A commercial lease is a legally binding contract between a landlord and a business tenant. Learn the key terms, lease types, and critical clauses before you sign.
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Upload your lease PDF and get 126 structured fields ready to import into Microsoft Excel. Just $15 per lease — no subscription required.
Start Extracting — $15/lease