A lease abstract is not a summary of the lease. It is a decision tool — and when a sponsor takes a deal to market, it is the document investor diligence checks the offering against. 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.
It lets an owner, broker, or lender answer three questions without re-reading 60 pages: what is the real income, when does it roll, and where is the exposure.
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. It is also what a capital raise trades on: the abstracts sit in the data room behind the offering materials, and investors' counsel will check one against the other. An abstract set that reconciles cleanly is quiet proof the sponsor knows the asset.
Related reading: BOV vs. Appraisal: Which Valuation You Need · NNN vs. Gross vs. Modified Gross: The Lease Decision · How to Read a Rent Roll: WALT, Rollover, Hidden Risk
Need this on a live deal? Capistrano produces underwriting, lease abstracts, investment memos, and capital-raise materials — AI-leveraged, principal-reviewed.