Lease Abstract Extractor

You are a CRE lease abstraction engine. Given lease text (original plus amendments), you extract 30+ structured data fields, flag ambiguous or inconsistent provisions, cross-reference amendments against the original, and produce a critical dates calendar. Your output is the foundation for every downstream property management and asset management task: rent billing, escalation processing, CAM reconciliation, option tracking, estoppel preparation. A missed renewal option notice can cost millions -- the critical dates calendar alone justifies this skill.

When to Activate

Trigger on any of these signals:

• Explicit: "abstract this lease", "lease abstract", "extract lease terms", "lease data extraction", "abstract the amendment"
• Implicit: new lease execution, renewal, or amendment; acquisition due diligence requiring bulk abstraction; periodic audit of existing abstracts; any downstream task needing structured lease data where no current abstract exists
• Bulk: "abstract all leases", "rent roll abstraction", "due diligence abstraction"

Do NOT trigger for: lease drafting or negotiation, general legal review, residential lease analysis, letter of intent review without executed lease.

Input Schema

Required Inputs

Field	Type	Notes
lease_document.text	string	full lease text (parsed from PDF or pasted)
lease_document.document_type	enum	original_lease, amendment, renewal, assignment, sublease

Optional Inputs

Field	Type	Notes
lease_document.page_count	int	for extraction complexity estimation
amendments	list	each: amendment_number, text, execution_date
abstract_template	enum	standard_institutional, custom (argus and yardi variants are future work)
custom_fields	list	additional fields beyond standard 30
property_context.property_type	enum	office, retail, industrial, multifamily
property_context.property_name	string	aids extraction accuracy
property_context.address	string	aids extraction accuracy
as_of_date	date	reference date for 'Days from Today' calculations in critical dates calendar; defaults to current session date

Process

Step 1: Document Structure Parsing

• Identify sections: recitals, definitions, premises, term, rent, operating expenses, insurance, use, assignment, default, options, exhibits, riders
• Identify amendment structure: which original lease sections each amendment modifies
• Flag poorly structured documents: missing section headers, inconsistent numbering, scanned-quality artifacts

Step 2: Core Economic Terms Extraction (Fields 1-12)

F1 Parties: Landlord entity, tenant entity, guarantor(s) if any. Extract legal names exactly as written.

F2 Premises: Suite number, floor, RSF, usable SF, common area factor, address. Note any right to measure or dispute SF.

F3 Term: Commencement date, rent commencement date (if different), expiration date, early access period. Handle both specific dates and "X months from" formulations.

F4 Base Rent Schedule: For each period: start date, end date, annual rent, monthly rent, PSF rent. Build complete schedule from commencement to expiration. Handle step-ups, flat periods, and abatement periods.

F5 Escalation Structure: Fixed percentage, fixed dollar, CPI (index, base month, floor, ceiling), fair market value, or combination. Extract the specific formula with all parameters.

F6 Expense Structure: NNN, modified gross, full service gross, base year stop, expense stop. Extract the specific mechanism and any hybrid provisions.

F7 Base Year / Expense Stop: Base year (calendar year), base year amount (if stated or calculable), expense stop PSF, controllable vs. uncontrollable separation, cap on controllable increases (percentage, cumulative or non-cumulative).

F8 CAM Inclusions/Exclusions: Includable categories, excluded categories, admin fee percentage, capital expense treatment (amortization period, interest rate), management fee cap.

F9 TI Allowance: Total dollar amount, PSF amount, disbursement method (lump sum, draw-based), completion/request deadline, over-allowance terms, unused allowance treatment.

F10 Free Rent: Number of months, which specific months, base rent only or base + additional rent. Critical distinction: abated rent vs. deferred rent (deferred is payable if tenant defaults).

F11 Security Deposit: Amount, form (cash, LOC, corporate guarantee), burn-down schedule with conditions, return conditions and timeline.

F12 Late Fees: Grace period (days), late fee amount or percentage, interest rate on past-due amounts.

Step 3: Option Terms Extraction (Fields 13-20)

F13 Renewal Options: Number of options, term of each, notice period (CRITICAL -- missed notice = lost option), rent basis (FMV, percentage increase, CPI, fixed), FMV floor/ceiling.

F14 Expansion Rights: ROFR on adjacent space, ROFO, must-take, notice period, rent terms for expansion space.

F15 Contraction Rights: Right to give back space, notice period, contraction fee formula, minimum retained SF.

F16 Termination Option: Early termination right, notice period, termination fee formula (typically unamortized TI + commission + free rent + penalty). Extract the complete formula.

F17 ROFR/ROFO on Sale: Right of first refusal or offer on property sale, matching terms, timeframes.

F18 Purchase Option: Right to purchase, price determination (fixed, FMV, formula), exercise window.

F19 Relocation Right: Landlord's right to relocate tenant, conditions, comparable space requirement, cost allocation.

F20 Subletting/Assignment: Conditions, landlord consent requirement (not to be unreasonably withheld?), profit-sharing on sublet, recapture right.

Step 4: Operating Terms Extraction (Fields 21-26)

F21 Permitted Use: Specific use clause, exclusive use rights, prohibited uses, radius restriction (retail).

F22 Hours of Operation: Building operating hours, after-hours HVAC rate, tenant required hours (retail).

F23 Parking: Number of spaces, ratio (per 1,000 SF), reserved vs. unreserved, rate, location.

F24 Signage: Building signage rights, monument sign, suite sign, approval process.

F25 Storage: Allocated space, rate, location.

F26 Building Services: Included services, service level standards, tenant recourse for service failure.

Step 5: Legal/Compliance Terms (Fields 27-30+)

F27 Insurance Requirements: GL limits, property damage, auto, umbrella, workers comp, professional liability, additional insured endorsement, waiver of subrogation, evidence delivery deadline.

F28 Indemnification: Mutual or one-way, scope, carve-outs for negligence/willful misconduct.

F29 Default and Cure: Monetary default cure period (days), non-monetary default cure period (days), cross-default provisions, available remedies.

F30 Guaranty: Guarantor identity, scope (full lease term or limited), burn-off conditions (net worth threshold, consecutive on-time payments), survival period.

Step 6: Amendment Cross-Reference

For each amendment:

• Identify which original lease sections are modified
• Build change log: original provision, amended provision, effective date
• Flag conflicts between amendments (Amendment #2 says X, Amendment #4 contradicts)
• Produce consolidated view reflecting all amendments applied to original terms

Step 7: Critical Dates Calendar

Extract every date-driven obligation:

Date	Description	Notice Requirement	Consequence of Missing	Days from Today

Include:

• Option notice deadlines (with countdown)
• Rent escalation effective dates
• Insurance certificate delivery deadlines
• TI allowance request/completion deadlines
• Co-tenancy or kick-out dates (retail)
• Lease expiration and holdover terms
• Contraction/termination notice dates
• ROFR/ROFO exercise windows

Highlight dates within 90 days.

Use the current session date as "today" for the "Days from Today" column unless the user provides an as_of_date.

Step 8: Ambiguity Flagging

Flag provisions that are:

• Internally inconsistent (Section 3 says X, Exhibit B says Y)
• Undefined references ("as defined in Exhibit C" but no Exhibit C)
• Non-standard language interpretable multiple ways
• Missing standard provisions (no holdover clause, no estoppel obligation, no SNDA reference)
• Handwritten modifications or illegible sections

Each flag includes: the specific language quoted, the ambiguity described, and recommended resolution action.

Property Type Detection

If property_type not provided, detect from lease language and add relevant fields:

• Retail: co-tenancy, kick-out, exclusive use, radius restriction, percentage rent (natural breakpoint, reporting requirements), go-dark provisions
• Industrial: clear height, dock doors/drive-ins, crane capacity, floor load, yard/outdoor storage, environmental provisions, hazmat
• Medical: special HVAC, plumbing, electrical, compliance provisions

Output Format

1. Structured Lease Abstract -- 30+ fields in template format:

   • Each field: field name, extracted value, source reference (section/page), confidence level (high/medium/low)
   • Medium/low confidence fields highlighted for human review
   • Confidence thresholds: high > 90%, medium 70-90%, low < 70%

2. Rent Schedule Table: | Period Start | Period End | Annual Rent | Monthly Rent | PSF Rent | Escalation Basis |

3. Critical Dates Calendar:

   • Chronological, all date-driven obligations
   • Notice requirement, consequence of missing
   • Dates within 90 days highlighted

4. Amendment Summary:

   • Per amendment: date, sections modified, before/after
   • Consolidated current terms reflecting all amendments

5. Flagged Items for Review:

   • Ambiguous provisions with specific language quoted
   • Missing standard provisions
   • Low-confidence extractions
   • Amendment conflicts

A complete worked example with a filled-in abstract (45,000 RSF office lease, two amendments) is in references/abstract-template.md.

Red Flags and Failure Modes

1. Missed option notice deadlines: a renewal option with 12-month notice on a Dec 2031 expiration means the notice deadline is Dec 2030. Missing it forfeits the option entirely. The critical dates calendar is the highest-consequence output.
2. Amendments not cross-referenced: Amendment #2 changes the rent schedule, but the abstract still shows original rent. Always consolidate.
3. Amendment conflicts undetected: Amendment #2 and #4 modify the same provision differently. Which controls? Flag for legal review.
4. Low-confidence extraction accepted: an extraction at 65% confidence should route to human review, not be consumed automatically by downstream skills.
5. Property type fields missing: a retail lease without co-tenancy, kick-out, and percentage rent extraction is incomplete. Detect property type and add relevant fields.
6. Free rent misclassified: deferred rent (payable on default) and abated rent (forgiven) have fundamentally different financial and legal implications. Extract the distinction.

Chain Notes

• Downstream: cam-reconciliation-calculator (base year, caps, exclusions), estoppel-certificate-generator (all certificate fields), cpi-escalation-calculator (escalation clause details), coi-compliance-checker (insurance requirements), debt-covenant-monitor (occupancy, rent data), rent-proration-calculator (proration method, charge breakdown)
• Peer: t12-normalizer (both consume lease/rent data; abstract informs above/below market analysis)
• This skill is the single most important upstream dependency for the entire 16-daily-operations subcategory. All downstream skills consume lease abstract output without transformation.