Real Estate & PropTech// topic
Lease abstraction and property document AI
In short
What a model can actually pull out of a lease, an amendment or a scanned estoppel — field by field, cited to the page it came from and scored for confidence — and which clauses still need a person to read them before anyone relies on the number.
8 pages
definitions
- Co-tenancy: the clause that can switch fixed rent offCo-tenancy makes one tenant's rent depend on other tenants trading. It is the clearest case where a lease field is not a number but a small state machine attached to the rent line.definition6 min
- Confidence on an extracted lease field: what the number measuresConfidence on an extracted field says how consistently the system reached a value, not whether the value is true. Treat it as a queueing signal, set against how many fields a person can check.definition6 min
- Execution, delivery, rent commencement: 3 start dates, not one fieldExecution binds the parties, delivery usually starts the term, rent commencement starts the money. Collapse them into a single start date and at least one downstream clock is wrong.definition6 min
- Lease abstract: the summary someone acts on without opening the leaseAn abstract is not a shorter lease. It is the record an operations team runs a portfolio from, and the test it has to pass is whether the week's decisions can be made from it alone.definition6 min
- Natural and artificial breakpoints: when sales become rentThe breakpoint is the line between sales reporting as a chore and sales reporting as a rent input. The exclusion list behind it can change the rent owed several-fold on identical trading.definition6 min
diagnostics
- Extraction returns no rent schedule, because the schedule is in Exhibit BAn empty rent schedule almost never means a lease without rent steps. Compare the lease's own exhibit list against the exhibits in the file, and structure failure separates from genuine absence in a minute.diagnostic9 min
- The abstract shows the original rent, not the rent being paidA billed rent and an abstracted rent that differ by one clean step point at the document set, not the model. One count separates a missing amendment from a merge that ran in the wrong order.diagnostic9 min
- The extracted clause cites page 34, and page 34 says nothing of the kindBroken provenance is its own defect class: a wrong value spoils one field, while a citation that will not resolve makes every field on the record unverifiable.diagnostic10 min
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