A lease abstract is not a summary of the lease. It is a decision tool. Done well, it lets an owner, broker, or lender answer the questions that matter — what is the real income, when does it roll, where is the exposure — without re-reading 60 pages. Done poorly, it is a table of contents. Here is the field set we hold every abstract to.
The core economic fields
These are the non-negotiables — the inputs that flow straight into underwriting:
- Parties and premises — tenant, landlord, suite, and rentable square footage.
- Commencement and expiration — the actual dates, not the term length.
- Base rent and escalations — current rate and the full bump schedule.
- Lease type — NNN, modified gross, or full service, and exactly which expenses the tenant reimburses.
- Recoveries and base-year — CAM, taxes, insurance, and any caps, gross-ups, or exclusions.
- Options — renewal, termination, expansion, contraction, ROFR/ROFO — with notice windows and rent-setting mechanics.
- Security and concessions — deposit, free rent, TI allowance.
The clauses that hide the risk
The economic fields tell you what the lease pays. The legal fields tell you what can go wrong: assignment and subletting rights, co-tenancy and exclusivity, casualty and condemnation, holdover terms, and any early-termination triggers. A co-tenancy clause in a retail lease can convert a stable rent roll into a contingent one — and it never shows up in the rent number.
The strategic overlay
This is what makes an abstract useful rather than merely accurate. For each asset we add:
- Mark-to-market — in-place rent versus current market, flagged up or down.
- Rollover exposure — a timeline of expirations so concentration is visible at a glance.
- Renewal economics — what an option actually costs the landlord if exercised.
For a single lease, the overlay is a paragraph. For a portfolio, it is the difference between a stack of summaries and a rollover schedule you can underwrite against. That portfolio-level view is what an underwriting model consumes directly.
One schema, every lease
The value compounds when every lease is abstracted the same way. A consistent 20-field schema means a 47-lease portfolio reads as one dataset, not 47 documents — and the exposure analysis falls out of the structure instead of being reconstructed by hand each time.
Need this on a live deal? Capistrano produces underwriting, lease abstracts, investment memos, and capital-raise materials — AI-leveraged, principal-reviewed.