AI Lease Abstraction Accuracy: Benchmarks and What to Expect
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.
The entity or individual providing financial backing for the tenant.
By Angel Campa, Founder · Updated March 2026
A guarantor provides the landlord with a secondary source of recovery if the tenant entity defaults. Without knowing who guaranteed the lease, asset managers cannot pursue collections effectively. Guarantors also need to be tracked for potential liability reduction negotiations as the lease matures.
Usually found in a separate Guaranty exhibit or addendum attached to the end of the lease. The guarantor is named in the guaranty agreement and cross-referenced in the lease preamble.
Lextract uses a combination of AWS Textract OCR and Claude AI to identify and extract the guarantor name from your lease PDF. The AI searches for all pages of the document, then assigns a confidence score based on OCR quality and extraction certainty. Fields with lower confidence are flagged for human review.
Landlord Name
The legal corporate name of the landlord/lessor.
Tenant Name
The legal corporate entity leasing the premises.
Premises Address
The full physical address of the leased space.
Suite/Unit Number
The specific identifier for the tenant's space within a multi-tenant building.
Rentable Area (RSF)
The total area for which the tenant pays rent, including common area allocations.
Usable Area (USF)
The exact private physical space occupied by the tenant.
A personal guarantee makes an individual (usually the business owner) liable with their personal assets. A corporate guarantee makes a parent company or affiliated entity liable. Corporate guarantees are preferred by tenants because they shield personal assets.
Some leases include "burning" guaranty provisions that reduce or eliminate the guarantee after a specified period of timely rent payments, such as 24 or 36 consecutive months. This must be explicitly negotiated into the lease.
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.
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Upload your lease PDF and Lextract will extract guarantor name along with 98 other structured fields in minutes. Just $20 per lease.
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