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 specific construction obligations the landlord must complete prior to possession.
By Angel Campa, Founder · Updated March 2026
Landlord work defines the baseline condition of the space at delivery. If the landlord is responsible for HVAC, restrooms, and ADA compliance but fails to complete these, the tenant bears the cost -- which can be $20-50/RSF for items that should have been included. Clear documentation of landlord obligations is essential for holding the landlord accountable and for calculating the actual construction budget the tenant must cover.
In the "Work Letter" exhibit or "Construction" section. May be described as "Base Building Work," "Landlord's Work," or "Shell Condition." Sometimes defined by reference to building standards (e.g., "Landlord shall deliver the Premises in shell condition per Exhibit C specifications").
Lextract uses a combination of AWS Textract OCR and Claude AI to identify and extract the landlord's work 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.
TI Allowance
The total monetary subsidy provided by the landlord for space customization.
TIA per RSF
The improvement allowance calculated on a per-square-foot basis.
Tenant's Work
The scope of construction the tenant is responsible for managing and funding.
Restoration Obligation
The duty of the tenant to remove improvements and restore the space upon exit.
HVAC Responsibility
Identifies whether the landlord or tenant is responsible for replacing HVAC units.
Common landlord work includes: base building HVAC, fire/life safety systems to code, ADA-compliant restrooms, core and shell completion, elevator service, electrical service to the floor, and sprinkler systems. The specific scope varies dramatically between shell condition and turnkey delivery.
Most leases require the landlord to correct defective work for a specified warranty period (typically 12 months after delivery). Beyond that, building standard items usually become the tenant's maintenance responsibility. The work letter should include a punch list process for identifying defects at delivery.
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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