# Lease Comparison Expert

> Use when comparing a lease amendment to its original, evaluating competing inbound vs. outbound offers, benchmarking a draft against a standard precedent form, or producing a side-by-side deviation analysis to support a deal recommendation.

- Skill: `reggiechan74/lease-comparison-expert` (Agent Skill, multi-file: 8 files)
- Install (CLI): `npx skillmds@latest add reggiechan74/lease-comparison-expert`
- Raw SKILL.md: https://api.skillmd.com/api/skills/reggiechan74/lease-comparison-expert/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: reggiechan74 (https://skillmd.com/u/reggiechan74)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/reggiechan74/lease-comparison-expert

---


# Lease Comparison Expert

## Overview

**Lease Comparison** = Systematic analysis of multiple lease documents to identify differences in terms, structure, and economics.

**Use Cases**:
1. **Amendment vs. Original**: Track changes over time
2. **Competing Offers**: Evaluate multiple tenant proposals
3. **Precedent Deviation**: Ensure consistency with standard form
4. **Portfolio Benchmarking**: Compare similar leases across properties
5. **Market Analysis**: Benchmark against comparable deals

## Core Concepts

### Types of Comparisons

**1. Amendment vs. Original Lease**
- Identifies what changed
- Tracks evolution of deal terms
- Detects inconsistencies
- Documents negotiation history

**2. Offer A vs. Offer B (Competing Offers)**
- Compares economic terms (NER, NPV)
- Evaluates non-economic factors (term, flexibility)
- Recommends best offer
- Identifies negotiation leverage

**3. Draft vs. Precedent (Standard Form)**
- Highlights deviations from landlord's standard
- Flags unusual provisions
- Assesses risk of tenant-favorable changes
- Maintains consistency across portfolio

**4. Lease vs. Market Comparables**
- Benchmarks rent against market
- Compares concession packages
- Evaluates competitiveness
- Supports rent negotiations

### Comparison Framework

**Key Dimensions**:
1. **Economic**: Rent, escalations, concessions, costs
2. **Term**: Duration, renewal options, termination rights
3. **Flexibility**: Assignment, subletting, expansion, contraction
4. **Risk Allocation**: Insurance, indemnity, environmental
5. **Operational**: Use, hours, parking, services
6. **Legal**: Default, remedies, dispute resolution

## Methodology

### Step 1: Define Comparison Scope

**Questions**:
- What are you comparing? (2 offers, amendment vs. original, etc.)
- What dimensions matter? (economic only, or full lease review?)
- What's the decision being made? (accept/reject, negotiate, standardize?)

### Step 2: Extract Key Terms

**Create comparison matrix**:
```
Provision        | Document A | Document B | Difference | Impact
-----------------+------------+------------+------------+---------
Base Rent        | $20/sf     | $22/sf     | +$2/sf     | $40K/year higher
Free Rent        | 3 months   | 6 months   | +3 months  | $55K concession
TI Allowance     | $10/sf     | $15/sf     | +$5/sf     | $100K higher
Term             | 5 years    | 3 years    | -2 years   | Shorter commitment
Renewal Option   | 1 × 5 yrs  | None       | No option  | Less flexibility
```

### Step 3: Calculate Economic Impact

For competing offers:
1. **Calculate NER** for each offer
2. **Calculate NPV** for each offer
3. **Assess risk-adjusted return** (shorter term = higher risk)
4. **Rank offers** by economic value

### Step 4: Assess Non-Economic Factors

**Consider**:
- **Tenant quality**: Credit strength, business stability
- **Operational fit**: Use compatibility, hours, parking needs
- **Strategic value**: Anchor tenant, synergies with other tenants
- **Flexibility**: Options, assignment rights, expansion potential

### Step 5: Recommend Decision

**Framework**:
- **Best Economic Value**: Highest NPV/NER
- **Best Risk-Adjusted Value**: Balances return and tenant quality
- **Best Strategic Fit**: Aligns with long-term property plan

**Output**: Clear recommendation with supporting rationale

## Key Analysis Techniques

### Net Effective Rent (NER) Comparison

**Purpose**: Normalize different rent structures to comparable metric

**Example**:
```
Offer A: $20/sf, 3 months free, $10/sf TI, 5 years
  → NER = $18.50/sf

Offer B: $22/sf, 6 months free, $15/sf TI, 3 years
  → NER = $17.80/sf

Conclusion: Offer A delivers higher NER despite lower headline rent
```

### Precedent Deviation Scoring

**Categorize changes**:
- **Minor**: Formatting, definitions (low risk)
- **Moderate**: Extended cure periods, additional parking (medium risk)
- **Major**: Tenant termination rights, unlimited assignment (high risk)

**Recommendation**:
- Accept: Minor deviations
- Negotiate: Moderate deviations
- Reject: Major deviations (or require offsetting concessions)

### Amendment Tracking

**Document evolution**:
```
Original Lease (2020): Base Rent $15/sf, 5-year term
Amendment #1 (2022): Rent reduced to $14/sf (COVID relief)
Amendment #2 (2024): Expansion from 10K sf to 15K sf, rent $16/sf
Current Status: 15K sf at blended $15.20/sf, expires 2025
```

**Purpose**: Understand deal history for renewal negotiations

## Red Flags

### Competing Offer Red Flags

**Too Good to Be True**:
- Offer significantly above market (25%+ premium)
- **Risk**: Tenant may default or renegotiate
- **Action**: Verify tenant creditworthiness

**Extreme Concessions**:
- 12 months free rent on 3-year term
- **Risk**: Tenant desperate (weak credit) or savvy negotiator
- **Action**: Assess why tenant needs such concessions

### Precedent Deviation Red Flags

**Unlimited Assignment Rights**:
- Standard form requires consent, tenant wants no consent required
- **Risk**: Loss of control over tenant quality
- **Action**: Reject or require recapture rights

**Tenant Termination Option**:
- Tenant may terminate with 90 days notice
- **Risk**: Lease instability
- **Action**: Reject or require significant termination fee

**Liability Cap**:
- Standard form unlimited liability, tenant wants cap at 1 year rent
- **Risk**: Insufficient damages for major breaches
- **Action**: Reject or require higher cap

### Amendment Red Flags

**Inconsistent Terms**:
- Amendment says 5-day cure, but doesn't specify for what default type
- **Risk**: Ambiguity, unenforceable
- **Action**: Clarify all amendments

**Undocumented Side Deals**:
- Verbal agreement to reduce rent not memorialized
- **Risk**: Not enforceable, creates disputes
- **Action**: Formalize all changes in writing

## Activation

This skill is automatically loaded when:
- User mentions: compare, comparison, amendment, precedent, deviation, benchmark, offers
- Reading files: Multiple lease documents, amendments, offers

All lease comparison workflows (amendment vs. original, competing offers, draft vs. precedent, general side-by-side) are handled directly by this skill — just ask in natural language.

## Examples

### Example 1: Competing Offers Analysis

**Situation**: Landlord receives 2 offers for 10,000 sf industrial space

**Offer A**:
- Rent: $10/sf/year
- Free Rent: 3 months
- TI: $5/sf ($50K)
- Term: 5 years
- Renewal: 1 × 5 years at market
- Tenant: Established distributor, B+ credit

**Offer B**:
- Rent: $11/sf/year
- Free Rent: 6 months
- TI: $10/sf ($100K)
- Term: 3 years
- Renewal: None
- Tenant: Startup, C credit

**Economic Analysis**:
```
Offer A:
  NER: $9.20/sf/year
  NPV: $380,000 (5 years)
  Payback: 3.1 years

Offer B:
  NER: $8.50/sf/year
  NPV: $180,000 (3 years)
  Payback: 5.2 years (exceeds term!)

Economic Winner: Offer A (+$200K NPV)
```

**Non-Economic Assessment**:
```
Offer A:
  ✓ Stronger tenant credit (B+ vs. C)
  ✓ Longer term (5 vs. 3 years)
  ✓ Renewal option (flexibility)
  ✓ Faster payback (within term)

Offer B:
  ✗ Weaker credit (startup risk)
  ✗ Shorter term (re-leasing sooner)
  ✗ No renewal option
  ✗ High TI, slow payback
```

**Recommendation**:
```
ACCEPT OFFER A

Rationale:
- Superior economics ($200K higher NPV)
- Stronger tenant credit
- Longer term reduces re-leasing risk
- Renewal option provides stability
- TI payback within term

Counter-Offer B: Would need $12.50/sf to match Offer A economics
```

### Example 2: Amendment vs. Original - Tracking Changes

**Original Lease (2020)**:
- Rent: $18/sf
- Term: 10 years (2020-2030)
- Use: General office
- Assignment: Landlord consent required

**Amendment #1 (2022) - COVID Relief**:
- Rent: Reduced to $15/sf for Years 3-4 (2022-2024)
- Years 5-10: Return to $18/sf
- Free Rent: 3 months (retroactive relief)

**Amendment #2 (2024) - Expansion**:
- Area: Increased from 5,000 sf to 7,500 sf
- Rent: New space at $20/sf (blended $18.67/sf)
- Term: Extended 2 years (now expires 2032)
- TI: $15/sf for new space ($37,500)

**Current Status Summary**:
```
LEASE EVOLUTION SUMMARY

Original Deal (2020):
  - 5,000 sf @ $18/sf
  - 10-year term
  - Total rent over term: $900K

After Amendments (2024):
  - 7,500 sf @ blended $18.67/sf
  - 12-year term (extended)
  - COVID relief: $45K rent reduction (Years 3-4)
  - Expansion TI: $37,500
  - Total revised rent: $1,680K (but paid $1,635K after COVID relief)

Net Impact:
  - 50% area increase
  - 20% term extension
  - Minimal rent increase (blended rate)
  - Landlord invested $37.5K TI for expansion
  - Tenant remains through 2032 (positive)

Assessment: Favorable expansion - retains tenant, adds revenue, modest TI investment
```

---

## Workflow: Precedent Comparison

**Invocation**: Ask in natural language, e.g. "Compare this draft lease against our standard precedent form."

### Input Handling
- First argument: current draft lease being negotiated
- Second argument: your organization's standard form/precedent lease
- Determine perspective (Landlord or Tenant) and whose form the precedent is

### Change Classification

For each section:
- **Identical** ✓ — Matches precedent exactly
- **Modified** ⚠️ — Language changed
- **Deleted** ❌ — Section removed entirely
- **Added** ⊕ — New section not in precedent
- **Moved** ↔️ — Section relocated
- **Weakened** ⬇️ — Protective language diluted
- **Strengthened** ⬆️ — Language made more favorable to you

### Protective Provisions Status Table

**If Landlord Form:**

| Protection | Status | Issue | Recommendation |
|------------|--------|-------|----------------|
| Subordination Rights | ✓/⚠️/✗ | | |
| Broad Default Definition | ✓/⚠️/✗ | | |
| Holdover Penalty (150-200%) | ✓/⚠️/✗ | | |
| Tenant Indemnification | ✓/⚠️/✗ | | |
| Landlord Exculpation | ✓/⚠️/✗ | | |
| No Rental Abatement Except as Expressed | ✓/⚠️/✗ | | |
| Personal Guaranty Requirements | ✓/⚠️/✗ | | |

**If Tenant Form:**

| Protection | Status | Issue | Recommendation |
|------------|--------|-------|----------------|
| Quiet Enjoyment | ✓/⚠️/✗ | | |
| Non-Disturbance from Lender | ✓/⚠️/✗ | | |
| Rent Abatement Rights | ✓/⚠️/✗ | | |
| Op Cost Audit Rights | ✓/⚠️/✗ | | |
| Assignment for Affiliates (no consent) | ✓/⚠️/✗ | | |
| Cap on Operating Cost Increases | ✓/⚠️/✗ | | |
| Reasonable Consent Standards | ✓/⚠️/✗ | | |

### Deviation Tiering

**Tier 1 — Must Fix (Deal-Breakers)** 🔴
- Fundamental changes eliminating key protections
- Material shifts in risk allocation
- Missing critical provisions

**Tier 2 — Should Fix (Strong Push)** 🟡
- Important protections weakened but not eliminated
- Missing desirable provisions
- Ambiguous language replacing clear terms

**Tier 3 — Can Accept** 🟢
- Reasonable deal-specific changes
- Market-standard deviations
- Stylistic preferences

### Tiered Negotiation Strategy
1. **Opening**: Lead with Tier 1 items, frame as non-negotiable corrections to standard protections
2. **Follow-up**: Address Tier 2, prioritize by deal specifics, be prepared to trade
3. **Final**: Concede Tier 3 if needed as goodwill
4. **Package deals**: "We'll accept [their Tier 2 change] if you restore [our Tier 2 provision]"

### Precedent Evolution Recommendations

After completing review, flag if any of the draft's changes represent market evolution worth adopting into your standard form. Distinguish:
- **Reasonable market evolution** — Worth updating precedent
- **One-party advocacy** — Reject and maintain current form

### Common Sources of Deviation
1. **Other Party's Form** — Consider requesting they start over with your form
2. **Prior Deal Markup** — Identify deal-specific vs. form provisions that carried over
3. **Intentional Negotiation** — Expected; focus on restoring critical protections
4. **Drafting Errors** — Point out politely as corrections

### Red Flags
- Wholesale changes to Remedies section (weakening enforcement rights)
- Subtle definition changes (can alter entire deal economics)
- Missing entire protective sections (likely intentional)
- New vague terms ("reasonable", "material", "substantial") without definition
- Changed cross-references (may break logical connections)

### Output Naming

Save report to `Reports/YYYY-MM-DD_HHMMSS_precedent_comparison_[property].md`

---

## Workflow: Offer Comparison

**Invocation**: Ask in natural language, e.g. "Compare the inbound offer to our outbound offer."

### Input Handling
- First argument: path to the inbound offer (received from the other party)
- Second argument: path to your outbound offer (what you sent)
- Determine perspective (Landlord or Tenant) from file names, headers, or document content

### Movement Classification

For each term, classify movement:
- **Accepted** ✓ — Their offer matches your position
- **Rejected** ✗ — Explicitly rejected or ignored
- **Countered** ⟷ — Different value/approach proposed
- **Partially Accepted** ◐ — Moved toward you but not all the way
- **New Issue** ⊕ — Raised something not in your outbound offer
- **Withdrawn** ⊖ — Something in your outbound not in their inbound

### Scorecard Table

| Category | Terms Changed | You Won | They Won | Compromised | New Issues | Still Open |
|----------|---------------|---------|----------|-------------|------------|------------|
| Financial | | | | | | |
| Term & Renewal | | | | | | |
| Flexibility | | | | | | |
| Risk Allocation | | | | | | |
| **TOTALS** | | | | | | |

### Deal-Breakers vs. Trading Chips

Classify each open issue:
- **Deal-Breakers** 🔴 — Both parties far apart, fundamental economics
- **Trading Chips** 🔄 — Stated positions but flexible; tradeable for bigger wins
- **Quick Wins** ✓ — Positions very close; capture to build momentum

### Negotiation Tactics to Watch For

1. **Salami Tactics** — Tiny concessions on many fronts to appear reasonable
   - Counter: Focus on key issues, don't get distracted by minor movement
2. **Anchoring** — Extreme opening to make real target seem reasonable
   - Counter: Re-anchor with market standards and comparables
3. **Good Cop/Bad Cop** — Different team members take conflicting positions
   - Counter: Stay focused on offer terms, not personalities
4. **Deadline Pressure** — Artificial deadlines forcing concessions
   - Counter: Set timeline based on real constraints
5. **Nibbling** — After major issues resolved, asking for "one more small thing"
   - Counter: Be clear about what's final, resist reopening settled issues

### Reading Between the Lines
- **Quick turnaround** = High interest or pressure on them
- **Slow turnaround** = Less interest, shopping other deals, or internal approval issues
- **Accepting most financial terms** = They need the space, financial terms less critical
- **Fighting flexibility clauses** = They want a locked-in tenant/landlord
- **Adding complexity** = They want negotiation leverage

### Pre-Counteroffer Checklist

**Content Verification:**
- [ ] Every term in their inbound addressed (accepted/rejected/countered)
- [ ] Every term in your outbound either accepted or re-raised
- [ ] New issues responded to with clear positions
- [ ] All numbers correct and consistent

**Strategic Verification:**
- [ ] Concessions align with priorities (giving on low-value, holding on high-value)
- [ ] Trade proposals clearly articulated
- [ ] Walk-away issues protected
- [ ] Tone is professional and collaborative

### Output Naming

Save report to `Reports/YYYY-MM-DD_HHMMSS_offer_comparison_[property]_round[N].md`

---

## Workflow: Amendment Comparison

**Invocation**: Ask in natural language, e.g. "Compare this new amendment against the lease history folder."

### Input Handling
- First argument: path to the new amendment file
- Second argument: path to folder containing original lease + previous amendments
- If only one argument provided, prompt user for missing path

### Step 1: Load Lease History
- Original lease: look for `lease.pdf`, `lease.docx`, `original_lease.*`
- Previous amendments: `amendment*.pdf`, `amending*.pdf`, `*amendment*.md` — sort chronologically
- Convert to markdown via `markitdown` if needed

### Step 2: Recitals Verification (CRITICAL)

Before substantive analysis, verify recitals in the new amendment:

| Recital Element | Stated in Amendment | Actual (from History) | Match? | Issue |
|-----------------|---------------------|----------------------|--------|-------|
| Original Lease Date | [Date from recitals] | [Date from file] | ✓/✗ | |
| Landlord Name | [Name from recitals] | [Name from original] | ✓/✗ | |
| Tenant Name | [Name from recitals] | [Name from original] | ✓/✗ | |
| Property Address | [Address from recitals] | [Address from original] | ✓/✗ | |
| Amendment 1 Date | [Date from recitals] | [Date from file] | ✓/✗ | |
| Amendment Number | [Number from recitals] | [Actual sequence] | ✓/✗ | |
| Stated Purpose | [What recitals say] | [What amendment does] | ✓/✗ | |

Flag all discrepancies prominently. Common recital errors:
1. **Missing Amendments** — Amendment 3 recites 1 and 2 but a 2A exists
2. **Wrong Dates** — Recitals state June 15, 2018 but actual amendment is 2017
3. **Wrong Party Names** — "ABC Corp." in lease vs. "ABC Corporation" in recitals
4. **Outdated Party Names** — Tenant was assigned but recitals still name original tenant
5. **Wrong Amendment Numbers** — Calls it "Third Amendment" but it's actually the fourth
6. **Purpose Mismatch** — Recitals say "to extend the term" but amendment also changes rent
7. **Copy/Paste Errors** — Recitals reference a completely different property from a template

### Step 3: Build Current Lease State
Apply each previous amendment in chronological order to establish the state before the new amendment. Track sections amended multiple times.

### Step 4: Section-by-Section Analysis

For each modified section, capture:
- **Current text** (before amendment)
- **New text** (after amendment)
- **Amendment history** for sections changed multiple times
- **Impact**: Financial / Term / Rights / Obligations / Use / Critical Dates

### Step 5: Report Structure

```
# LEASE AMENDMENT COMPARISON REPORT
## [Property Address]

## Executive Summary
## Amendment Information (number, dates, parties, previous amendments)
## Recitals Verification [table above]
## ⚠️ Recital Issues Identified
## Lease History Timeline [table]
## Summary of Changes (What's Changed / Added / Deleted)
## Detailed Change Analysis [per-section: current → new → impact]
## Critical Changes Summary (🔴 High / 🟡 Medium / 🟢 Low)
## Issues and Concerns (conflicts, ambiguities, missing elements)
## Financial Impact Summary [table]
## Updated Critical Dates
## Recommendations (For Landlord / For Tenant / For Both)
## Checklist Before Execution
```

### Pre-Execution Checklist

**Recitals:**
- [ ] Original lease date correct in recitals
- [ ] Landlord name matches original lease exactly
- [ ] Tenant name matches current tenant (or assignment documented)
- [ ] Property address/description accurate
- [ ] ALL previous amendments listed in recitals with correct dates
- [ ] Amendment numbering sequential and correct
- [ ] Stated purpose aligns with actual changes

**Substantive Provisions:**
- [ ] No conflicts with existing provisions
- [ ] Financial impacts calculated and acceptable
- [ ] Effective date clear and appropriate
- [ ] All referenced exhibits/schedules attached
- [ ] Both parties have authority to execute
- [ ] All blanks filled in (no TBD items)

### Output Naming

Save report to `Reports/YYYY-MM-DD_HHMMSS_amendment_comparison_[property].md`

---

**Skill Version:** 1.0
**Last Updated:** November 13, 2025
**Related Skills:** commercial-lease-expert, effective-rent-analyzer, negotiation-expert, offer-to-lease-expert
**Related Commands:** none — amendment, offer, precedent, lease-vs-lease, and market-comparison workflows are all handled by this skill directly